3A1 Practice Test 1 Flashcards
(150 cards)
1
Q
Gases such as air, nitrogen and oxygen can be roughly defined as perfect gases because they:
Select one:
A.
Condense rapidly during condition changes
B.
Can expand without being heated
C.
Remain in gaseous form during condition changes
D.
Cannot be superheated
E.
None of the above
A
C.
Remain in gaseous form during condition changes
2
Q
Specialty steels for construction of bridges, boilers and ships are refined in an oxygen furnace because:
Select one:
A.
It reduces the time needed to produce the steel
B.
The high temperatures reduce the amount of alloy elements needed to strengthen the steel
C.
The high temperature produces steel with a very fine grain structure
D.
This method reduces impurities and gives the steel greater strength
E.
The slow operation gives advantages over other processes.
A
D.
This method reduces impurities and gives the steel greater strength
3
Q
Referring to the diagram below, the enthalpy change of 2108.5 kJ/kg represents the:
10_06
Select one:
A.
Latent heat
B.
Sensible heat
C.
Total enthalpy
D.
Specific enthalpy
E.
Superheat energy
A
A.
Latent heat
4
Q
A refrigerator with a mass of 150 kg sits on a perfectly level surface. It is pushed by a force of 350 N, acting upward at 30 degrees to the horizontal. If the coefficient of friction between the refrigerator and the surface is 0.25, what will happen to the refrigerator?
Select one:
A.
The refrigerator will start moving maintaining a steady speed as kinetic friction increases
B.
The refrigerator will slide and continue to accelerate
C.
The refrigerator will slide at a constant velocity
D.
The refrigerator will tip
E.
The refrigerator will not move
A
E.
The refrigerator will not move
5
Q
The hammer of a pile driver has a mass of 3000 kg. It falls through a height of 9 m. The hammer’s kinetic energy just before impact is:
Select one:
A.
27.0 kJ
B.
264.87 kJ
C.
27,000 kJ
D.
243,000 J
E.
None of the above
A
B.
264.87 kJ
6
Q
Rearranging an equation to isolate the unknown is called:
Select one:
A.
Isolating.
B.
Interpolating.
C.
Squaring.
D.
Transposing.
E.
Solving.
A
D.
Transposing.
7
Q
A horizontal boiler shell is 180 cm in diameter and 5 m long. It is filled with water to a depth of 160 cm. What is the area of the segment of the end plate below the water line?
03_17
Select one:
A.
1.87 m²
B.
1.98 m²
C.
2.17 m²
D.
2.24 m²
E.
2.39 m²
A
E.
2.39 m²
8
Q
The major axis of an ellipse is 38 cm long and the area of the ellipse is 418 cm². What is the length of the minor axis?
Select one:
A.
7 cm
B.
14 cm
C.
16 cm
D.
28 cm
E.
32 cm
A
B.
14 cm
9
Q
_____ does not contain any neutrons in its nucleus.
Select one:
A.
Helium
B.
Carbon
C.
Oxygen
D.
Hydrogen
E.
Nitrogen
A
D.
Hydrogen
10
Q
To stabilize themselves, hydrogen and carbon atoms combine and:
Select one:
A.
Form non-organic compounds
B.
Share electrons between themselves
C.
Share protons between themselves
D.
The hydrogen atoms give up two electrons to the carbon atom
E.
Share neutrons between themselves
A
B.
Share electrons between themselves
11
Q
The force that is equal in magnitude but opposite in direction to the resultant force is called the:
Select one:
A.
Component
B.
Element
C.
Displacement
D.
Equilibrant
E.
Impedance
A
D.
Equilibrant
12
Q
The “mass density” of a substance is commonly called “density.” It has a unit of:
Select one:
A.
Kg/cm³
B.
N/kg
C.
Kg/m³
D.
lbs/ft²
E.
m³/kg
A
C.
Kg/m³
13
Q
Refer to the triangle below. Pythagoras’ Theorem for this triangle may be stated as:
02_01
Select one:
A.
b² = c² + a²
B.
c² = a² - b²
C.
c² = a² + b²
D.
a² = c² + b²
E.
c² = b² - a²
A
C.
c² = a² + b²
14
Q
Referring to the triangle ABC below, the ratio of opposite side/adjacent side (b/a) for angle B is called the:
02_01
Select one:
A.
Sine of angle B or Sin B
B.
Cosine of angle B or Cos B
C.
Secant of angle B or Sec B
D.
Tangent of angle B or Tan B
E.
Cotangent of angle B or Cot B.
A
D.
Tangent of angle B or Tan B
15
Q
Ionic compounds are formed by the:
Select one:
A.
Sharing of electrons between atoms
B.
Sharing of atoms between elements
C.
Transferring of protons between atoms
D.
Transferring of electrons between the atoms
E.
Sharing of molecules between atoms
A
D.
Transferring of electrons between the atoms
16
Q
A wooden A frame is to be used to remove an air compressor from a truck bed. The top of the A frame must be 4 m from the ground, and the legs are to be 3 m apart at the bottom. What is the length of each leg of the A frame?
Select one:
A.
3.85 m
B.
4.27 m
C.
4.73 m
D.
6.27 m
E.
11.39 m.
A
B.
4.27 m
17
Q
A rope block hangs from a beam. The rope is passing around two sheaves (sheave = wheel or disk with a grooved rim, especially one used as a pulley) in each block as illustrated below. Find the mass that can be lifted with an effort of 40 N.
07_37
Select one:
A.
16.30 kg
B.
20.39 kg
C.
24.46 kg
D.
30.58 kg
E.
160 kg
A
A.
16.30 kg
18
Q
The moment of a force about a point is:
Select one:
A.
The component that will bring the system to equilibrium
B.
The force multiplied by the resultant
C.
The force multiplied by the equilibrant
D.
The force multiplied by the perpendicular distance between the force and the pivot point
E.
Equal to time multiplied by the force
A
D.
The force multiplied by the perpendicular distance between the force and the pivot point
19
Q
A steel bar is 4 m long, and has a rectangular cross section of 3 cm x 4 cm. It is in tension from a force of 360 kN. Find the stress induced.
Select one:
A.
300 kPa
B.
300 MPa
C.
120,000 kPa
D.
300,000 kN/cm²
E.
None of the above
A
B.
300 MPa
20
Q
Pipe rack details with elevations and layout of process lines are included on:
Select one:
A.
P&IDs
B.
Process Flow Diagrams
C.
Construction Drawings
D.
Equipment layout or plot plan drawings
E.
Electrical Drawings
A
D.
Equipment layout or plot plan drawings
21
Q
The _____ of a screw thread is the axial distance moved for one complete revolution.
Select one:
A.
Lead
B.
Lag
C.
Taper
D.
Size
E.
Length
A
A.
Lead
22
Q
Grey cast iron is produced by:
Select one:
A.
Firing the cupola hotter than normal and then cooling the molten material quickly
B.
Cooling the molten material from the cupola furnace slowly thus allowing the carbon to disassociate and form graphite within the iron
C.
Keeping the cupola furnace cooler than normal and then cooling the molten material quickly to keep the carbon combined with the iron
D.
Adding graphite to the pig iron as you melt it in the cupola furnace to give it the grey color and fibrous appearance
E.
Adding bauxite to the pig iron as you melt it in the cupola furnace to give it the grey color and fibrous appearance
A
B.
Cooling the molten material from the cupola furnace slowly thus allowing the carbon to disassociate and form graphite within the iron
23
Q
The common and Naperian logarithms for the number 272 are:
Select one:
A.
1.4346, 3.3032
B.
2.4346, 5.6058
C.
3.4345, 7.9084
D.
4.4345, 7.9084
E.
5.4345, 7.9084.
A
B.
2.4346, 5.6058
24
Q
Determine the shear forces at sections 4 m and 12 m from the left support of the beam shown below. Assume that positive sign indicates force acting upwards and negative sign indicates force acting downward.
06_35
Select one:
A.
At 4 m = + 400 N, at 12 m = -1200 N
B.
At 4 m = -1000 N, at 12 m = +1000 N
C.
At 4 m = +1000 N, at 12 m = -1000 N
D.
At 4 m = +1000 m, at 12 m = -2000 N
E.
At 4 m = -800 m, at 12 m = +1200 m
A
B.
At 4 m = -1000 N, at 12 m = +1000 N
25
What is 'ln N' if log N = 3.825
Select one:
A.
1.522
B.
1.661
C.
8.807
D.
28.087
E.
88.087.
C.
8.807
26
In order to completely burn 60 kg of carbon the oxygen necessary will be:
Select one:
A.
60 kg
B.
80 kg
C.
90 kg
D.
100 kg
E.
160 kg
E.
160 kg
27
To "expand a gas" means the gas is:
Select one:
A.
Always at constant volume
B.
Always at constant pressure
C.
Always at constant temperature
D.
Able to perform useful work
E.
Required to have work preformed on it
D.
Able to perform useful work
28
A tire that turned two and three quarter (2 ¾) revolutions has turned an equivalent of ___________ radians.
Select one:
A.
6.28
B.
8.64
C.
17.28
D.
171.29
E.
2.75
C.
17.28
29
Oxygen is lanced into the molten metal in the Electric Arc Furnace to:
1. Increase the heat and promote faster melting of the pig iron
2. Form oxides that float to the surface
3. Lower the carbon content to the desired levels
4. Enhance the electrical current flow
Select one:
A.
1, 2
B.
2, 3
C.
3, 4
D.
1, 3
E.
2, 4
B.
2, 3
30
A triangle in which all three sides (a, b, c) are different lengths, is called a/an ___________ triangle.:
Select one:
A.
Isosceles
B.
Scalene
C.
Equilateral
D.
Unilateral
E.
Right
B.
Scalene
31
From the Superheat Tables the symbol “v” means the specific:
Select one:
A.
Viscosity of the steam
B.
Volume of the steam
C.
Velocity of the steam
D.
Volume of the water
E.
Velocity of the water
B.
Volume of the steam
32
If we find the maximum load applied to a sample being subjected to an ultimate tensile strength test, and know the cross-sectional area of the sample prior to testing, we can calculate the ultimate tensile strength of the sample by:
Select one:
A.
Dividing the original cross-sectional area into the maximum load applied
B.
Multiplying the original cross-sectional area by the maximum load applied
C.
Dividing the final cross-sectional area by the maximum load applied
D.
Dividing the original cross-sectional area by the maximum load applied and multiplying by the cross-sectional area found at the break
E.
Dividing the original cross-sectional area into the minimum load applied
A.
Dividing the original cross-sectional area into the maximum load applied
33
Referring to the figure below, the hypotenuse is the side:
02_01
Select one:
A.
a
B.
b
C.
c
D.
A
E.
B.
C.
c
34
For Chloride Stress Corrosion cracking to occur in stainless steels there must be:
Select one:
A.
Oxygen in the solution
B.
A temperature above 100°C
C.
Water vapor or moisture in the air
D.
A flaw in the design of the piece of metal
E.
An alkaline solution in contact with the steel
A.
Oxygen in the solution
35
In the expression 4² = 16, the number '4' is called the _____ of 16.
Select one:
A.
Square root.
B.
Cube root.
C.
Square.
D.
Cube.
E.
Multiplicand.
A.
Square root.
36
If the boiler water pH has been below 7.0 for more than one hour there is a high potential for:
Select one:
A.
Caustic Embrittlement
B.
Caustic Gouging
C.
Scale build up under which the corrosion will be enhanced
D.
Hydrogen damage or hydrogen embrittlement
E.
The generation of flammable gases and an explosion
Hydrogen damage or hydrogen embrittlement
37
What is the area of a triangle whose sides measure 4 km, 5 km and 7 km?
Select one:
A.
9.80 km²
B.
10.78 km²
C.
20.00 km²
D.
35 km²
E.
140 km²
A.
9.80 km²
38
A ladder 5 m long leans against a wall, and is inclined at 65 degrees to the ground. How high up the wall does the ladder reach?
Select one:
A.
2.11 m
B.
4.53 m
C.
4.71 m
D.
5.52 m
E.
10.72 m.
B.
4.53 m
39
The legend that accompanies a set of P&ID's is used to identify:
Select one:
A.
The various processes the are included in the drawings
B.
The originator of the drawings and the contact numbers where they can be reached
C.
The actual flow rates, temperatures and pressures that will be experienced throughout the various processes on the P&IDs
D.
The symbols and abbreviations that are used in the P&ID's
E.
The author of the drawing
D.
The symbols and abbreviations that are used in the P&ID's
40
An octagon has sides 4 cm long. How much larger is its area than a circle with a radius which is also 4 cm long?
Select one:
A.
8.66 cm²
B.
18.01 cm²
C.
22.67 cm²
D.
27.01 cm²
E.
64.72 cm²
D.
27.01 cm²
41
Compression requires that:
Select one:
A.
The gas be at absolute pressure and temperature
B.
Work be done on the gas
C.
Work be done by the gas
D.
The gas will be at a constant volume
E.
No work is done during the compression process
B.
Work be done on the gas
42
The following items must be present before Sulphide Stress Corrosion Cracking can occur:
1. Hydrogen Sulphide
2. A high strength steel
3. High velocity air movement
4. A surface crack in the steel for the corrosive agent to enter
Select one:
A.
1, 2
B.
2, 3
C.
3, 4
D.
1, 3
E.
1, 4
A.
1, 2
43
A material that does not have ductility will be:
Select one:
A.
Tough
B.
Hard
C.
Malleable
D.
Brittle
E.
Plastic
D.
Brittle
44
Referring to angle B in the figure below, side "a" is called the:
02_01
Select one:
A.
Hypotenuse
B.
Adjacent
C.
Opposite
D.
Reciprocal
E.
Median.
B.
Adjacent
45
Hydrocarbon compounds contain:
Select one:
A.
A number of different elements as well as atoms of hydrogen and carbon
B.
Only atoms of carbon and hydrogen
C.
Atoms of carbon, hydrogen, oxygen and nitrogen
D.
Various organic and inorganic elements
E.
Atoms of carbon, hydrogen, oxygen
B.
Only atoms of carbon and hydrogen
46
Velocity ratio is equal to the:
Select one:
A.
Ideal efficiency
B.
Actual mechanical advantage
C.
Actual efficiency
D.
Actual mechanical ratio
E.
Ideal mechanical advantage
E.
Ideal mechanical advantage
47
The periodic table is used to identify the:
Name and the symbol of a molecule
Atomic weight of a metal
Atomic number and atomic mass of an element
Symbol of the element
Select one:
A.
1, 2
B.
2, 3
C.
3, 4
D.
1, 3
E.
2, 4
C.
3, 4
48
When the sum of the clockwise moments equals the sum of the anti-clockwise moments then:
Select one:
A.
Both forces are zero
B.
Rotational equilibrium exists
C.
The resultant is reduced
D.
The resultant is increased
E.
The equilibrium is greater than the resultant
B.
Rotational equilibrium exists
49
If a bar is heated at one end heat will travel from molecule to molecule until the other end becomes hot. This is known as:
Select one:
A.
Convection
B.
Radiation
C.
Conduction
D.
Specific heat
E.
Sublimation
C.
Conduction
50
The operation of a blast furnace is most efficient when it is:
Select one:
A.
Continuous
B.
At high temperatures
C.
Fired by natural gas
D.
Operated for 12 hours per day
E.
Operated intermittently
A.
Continuous
51
Grey cast iron is used for large motor and compressor bases because it:
Select one:
A.
Is relatively inexpensive to produce and is a harder material than white cast iron
B.
Is easy to cast and has a harder surface than white cast iron
C.
Is strong in tension, compression and withstands heat well
D.
Dampens vibration and sound well and it is strong in compression and shear
E.
Is light and flexible
D.
Dampens vibration and sound well and it is strong in compression and shear
52
A triangle with all three sides the same length is called a/an __________ triangle.
Select one:
A.
Isosceles
B.
Scalene
C.
Acute
D.
Equilateral
E.
Obtuse
D.
Equilateral
53
A rope block hangs from a beam. The rope is passing around two sheaves (sheave = wheel or disk with a grooved rim, especially one used as a pulley) in each block as illustrated below. Find the mass that can be lifted with an effort of 40 N.
07_37
Select one:
A.
16.30 kg
B.
20.39 kg
C.
24.46 kg
D.
30.58 kg
E.
160 kg
A.
16.30 kg
54
A solid brass statue has a mass of 20,000 kg. What mass of steel would be required to exactly duplicate the structure?
Select one:
A.
303.5 kg
B.
18 572 kg
C.
21 347 kg
D.
21 593 kg
E.
20 000 kg
B.
18 572 kg
55
In the following right triangle find the lengths of b and c, if a = 4 cm and angle A = 27 degrees.
02_01
Select one:
A.
b = 5.85 cm, c = 6.81 cm
B.
b = 6.85 cm, c = 7.81 cm
C.
b = 7.85 cm, c = 8.81 cm
D.
b = 9.75 cm, c = 9.81 cm
E.
b = 9.85 cm, c = 10.81 cm.
C.
b = 7.85 cm, c = 8.81 cm
56
Referring to angle B in the figure below, side "a" is called the:
02_01
Select one:
A.
Hypotenuse
B.
Adjacent
C.
Opposite
D.
Reciprocal
E.
Median.
B.
Adjacent
57
Heat transfer due to movement of a fluid is called:
Select one:
A.
Sublimation
B.
Convection
C.
Radiation
D.
Sensible heat
E.
Conduction
B.
Convection
58
A material's ability to withstand great deformation under high loads before rupturing is a measure of it’s:
Select one:
A.
Toughness
B.
Ductility
C.
Ultimate strength
D.
Malleability
E.
Stiffness
B.
Ductility
59
The measurable degree of hotness or coldness of anything is known as:
Select one:
A.
Percentage
B.
Amount
C.
Heat
D.
Enthalpy
E.
Temperature
E.
Temperature
60
The arrow used to join the two sides of a chemical equation:
Functions as an equals sign
Identifies which part of the chemical reaction happens first
Identifies the direction in which the reaction normally occurs
Has no real value in the equation
Select one:
A.
1, 2
B.
2, 3
C.
3, 4
D.
1, 3
E.
2, 4
D.
1, 3
61
Corrosion is defined as the:
Select one:
A.
Loss of metal or wall thickness due to the flow of abrasive materials
B.
Destruction of a metal by overheating
C.
Destruction of a metal by chemical or electrochemical reaction with its environment
D.
Combination of a metal with other materials, which cause the metal to become harder
E.
Weakening of the metal by over pressure
C.
Destruction of a metal by chemical or electrochemical reaction with its environment
62
The molecular mass of a substance can be found by adding together:
Select one:
A.
The number of protons in each atom in the substance
B.
The number of atoms in the elements within the substance
C.
The atomic masses of the atoms of the elements in the chemical formula of the substance
D.
All the atomic masses of the atoms on the right side of the chemical equation and subtracting that from the atomic masses of the atoms on the left side of the chemical equation
E.
The nucleus masses of the elements
C.
The atomic masses of the atoms of the elements in the chemical formula of the substance
63
The formula "F = (9/5)C + 32", can be be rearranged as "C = _______":
Select one:
A.
(9/5)F + 32.
B.
(9/5)F - 32.
C.
(5/9)F + 32.
D.
(5/9)(F - 32).
E.
(5/9) - 32F.
D.
(5/9)(F - 32).
64
The wheel-and-axle system below has dimensions d = 300 mm and R = 1.5 m. If the efficiency of the machine is 90%, find the mechanical advantage of the system.
07_06
Select one:
A.
4.5
B.
5
C.
7
D.
9
E.
10
D.
9
65
The theoretical volume of oxygen (measured at 0°C and 101.325 kPa) needed for the complete combustion of 100 m3 of propane is:
Select one:
A.
300 m³
B.
500 m³
C.
600 m³
D.
800 m³
E.
900 m³
B.
500 m³
66
A motorcycle traveling at 30 km/h increases its velocity uniformly to 110 km/h in the time of 5 seconds, while travelling the distance of 97.2 m. Its acceleration in m/s² is:
Select one:
A.
16
B.
7.78
C.
4.45
D.
28
E.
111.15
C.
4.45
67
A substance is considered to be a _____ if it consists of different elements or compounds or both, all of which retain their individual chemical properties.
Select one:
A.
Compound
B.
Molecule
C.
Atom
D.
Element
E.
Mixture
E.
Mixture
68
In the following triangle, what is the value of sin B and what is the size of the angle B?
02_06
Select one:
A.
0.75, 48.59 degrees
B.
0.80, 53.13 degrees
C.
1.33, 48.6 degrees
D.
0.6, 36,87 degrees
E.
1.67, 53.32 degrees
D.
0.6, 36,87 degrees
69
A sector has sides of 5 m and an angle of 36°. Calculate the area of the sector.
03_22
Select one:
A.
7.184 m²
B.
7.854 m²
C.
8.112 m²
D.
8.334 m²
E.
9.122 m²
B.
7.854 m²
70
An expansion or compression that occurs without heat transfer to or from the gas is:
Select one:
A.
Constant temperature
B.
Isothermal
C.
Adiabatic
D.
Constant volume
E.
Polytropic
C.
Adiabatic
71
Refer to the triangle below. Pythagoras' Theorem for this triangle may be stated as:
02_01
Select one:
A.
b² = c² + a²
B.
c² = a² - b²
C.
c² = a² + b²
D.
a² = c² + b²
E.
c² = b² - a²
C.
c² = a² + b²
72
Find the horizontal resultant of the system of forces provided below. Use component method.
/jlms/QB/SI/3rd/3rd_SI_A1_04_19.gif
Select one:
A.
0.524 kN acting to the right
B.
0.524 kN acting to the left
C.
1.669 kN acting to the right
D.
1.669 kN acting to the left
E.
1.966 kN acting to the left
B.
0.524 kN acting to the left
73
In the following right triangle find the lengths of b and c, if a = 4 cm and angle A = 27 degrees.
02_01
Select one:
A.
b = 5.85 cm, c = 6.81 cm
B.
b = 6.85 cm, c = 7.81 cm
C.
b = 7.85 cm, c = 8.81 cm
D.
b = 9.75 cm, c = 9.81 cm
E.
b = 9.85 cm, c = 10.81 cm.
C.
b = 7.85 cm, c = 8.81 cm
74
Reflex angles are greater than:
Select one:
A.
45 degrees
B.
90 degrees
C.
120 degrees
D.
180 degrees
E.
270 degrees.
D.
180 degrees
75
The yield point on a tension test is where:
Select one:
A.
The point where the material fails and breaks
B.
The plastic deformation stops and the elastic deformation begins
C.
The stress begins to decrease and the strain begins to increase
D.
The elastic limit is reached and plastic deformation starts
E.
No deformation has taken place
D.
The elastic limit is reached and plastic deformation starts
76
A column 10 cm diameter and 2 m long is subject to a compression force of 800 kN, which shortens the column 1 mm. Find the modulus of elasticity.
Select one:
A.
20,371 kPa
B.
101,850 kPa
C.
20,372 MPa
D.
201,850 MPa
E.
203.72 GPa
E.
203.72 GPa
77
A cylindrical tank has its axis vertical. It is 2 m in diameter and its mass is 800 kg. When it is filled to 2 m high with oil, the total mass is 5050 kg. What is the relative density of the oil?
Select one:
A.
6.312
B.
6.764 kg/m³
C.
6.764
D.
0.876
E.
0.6764
E.
0.6764
78
In the following triangle, find the value of Cos B and its corresponding angle:
02_06
Select one:
A.
0.75, 48.59 degrees
B.
0.80, 36.87 degrees
C.
1.33, 48.60 degrees
D.
0.6, 36.87 degrees
E.
1.67, 53.22 degrees.
B.
0.80, 36.87 degrees
79
A kilomol of a substance is an amount equal to its _____ in kilograms.
Select one:
A.
Number of protons
B.
Molecular mass
C.
Number of neutrons
D.
Balanced mass
E.
Atomic number
B.
Molecular mass
80
An internal combustion engine has 8 cyclinders, the diameter of each of the pistons is 10 cm. Assuming the force of explosion within the cyclinder is 314.16 N, determine the average pressure acting on each of the cyclinders.
Select one:
A.
10 kPa
B.
40 kPa
C.
80 kPa
D.
160 kPa
E.
320 kPa
B.
40 kPa
81
A simply supported beam is 8 m long and has a concentrated load of 40 kN at 3 m from the left end support and a concentrated load of 30 kN at 2 m from the right hand end. Find the support reactions. (Neglect the mass of the beam, picture may not be to scale).
06_57
Select one:
A.
R1 = 37.5 kN, R2 = 32.5 kN
B.
R1 = 32.5 kN, R2 = 37.5 kN
C.
R1 = 35 kN, R2 = 35 kN
D.
R1 = 30.5 kN, R2 = 39.5 kN
E.
R1 = 40 kN, R2 = 30 kN
B.
R1 = 32.5 kN, R2 = 37.5 kN
82
If enough heat is supplied to convert a substance from a solid to a liquid the:
Select one:
A.
Sensible heat will increase
B.
Temperature will rise
C.
Volume will decrease
D.
Potential energy is decreased
E.
Force of cohesion is overcome
E.
Force of cohesion is overcome
83
Increasing the carbon content of the steel will:
1. Increase the hardness
2. Increase the ability to withstand rusting
3. Increase the strength
4. Increase the ability to machine
5. Reduce the ability to machine 6.Increase brittleness
Select one:
A.
1, 2, 3, 4
B.
3, 4, 5, 6
C.
1, 3, 5, 6
D.
2, 3, 5, 6
E.
2, 3, 4, 5
C.
1, 3, 5, 6
84
A load of 750 kg just starts to move when the friction angle is 10°. What effort must be applied parallel to the horizontal surface to stop the motion of the block?
Select one:
A.
7245.72 N
B.
1478.22 N
C.
1297.33 N
D.
1277.62 N
E.
1124.35 N
C.
1297.33 N
85
Solve (a + 5b) - 2(a - 4) = 3(2a + b) - 7(a - 3) for b:
Select one:
A.
10.7
B.
6.5
C.
2.4
D.
5.6
E.
8.7.
B.
6.5
86
Referring to angle A in the figure below, side "a" is called the:
02_01
Select one:
A.
Hypotenuse
B.
Adjacent
C.
Opposite
D.
Reciprocal
E.
Median.
C.
Opposite
87
The plan view of a pipe line is shown below. Find the length of the straight line from A to B, when a = 6 m, b = 11 m (the whole length), and c = 3 m.
02_21
Select one:
A.
11.21 m
B.
12.11 m
C.
13.21 m
D.
14.21 m
E.
15.11 m.
D.
14.21 m
88
The characteristic constant for a gas is given as:
Select one:
A.
Kg/kPa/K
B.
J/g C
C.
KJ/Kg/C
D.
Kg K
E.
KJ/Kg K
E.
KJ/Kg K
89
Referring to the triangle ABC below, the ratio of opposite side/adjacent side (b/a) for angle B is called the:
02_01
Select one:
A.
Sine of angle B or Sin B
B.
Cosine of angle B or Cos B
C.
Secant of angle B or Sec B
D.
Tangent of angle B or Tan B
E.
Cotangent of angle B or Cot B.
D.
Tangent of angle B or Tan B
90
In white cast iron, the carbon in the iron is:
Select one:
A.
Completely removed by heating the pig iron to a very high temperature
B.
Combined with lime and oxygen to produce the white color
C.
Chemically combined in the form of iron carbide or cementite
D.
Reduced to 2% by adding the correct amounts of scrap iron and steel
E.
Combined with aluminum to produce a white color
C.
Chemically combined in the form of iron carbide or cementite
91
What is the value of X in the following fractional equation:
(x/2) + (3x/4) = (4.5/3)
Select one:
A.
0.83
B.
1.2
C.
1.5
D.
1.66
E.
2.0.
B.
1.2
92
The "relative density" of a substance refers to the density of:
Select one:
A.
A substance compared to the density of water
B.
A substance compared to the density of air at standard conditions
C.
A substance compared to the density of gold
D.
A substance compared to the density of the same substance at standard conditions
E.
Water divided by the density of other substance
A.
A substance compared to the density of water
93
Generally, the boiling point of a hydrocarbon compound will:
Select one:
A.
Decrease with increased carbon chain length and increase with increased branching
B.
Decrease with increased carbon chain length and decrease with increased branching
C.
Increase with increased carbon chain length and increase with increased branching
D.
Increase with increased carbon chain length and decrease with increased branching
E.
Remain constant over all chain lengths and branches
D.
Increase with increased carbon chain length and decrease with increased branching
94
Plot plans are used to locate:
Select one:
A.
The area where the underground electrical cables are buried
B.
The equipment on the plant site and location within its process block
C.
That area to set the footings for the equipment
D.
The underground gas and pipelines
E.
The plant within the jurisdiction that it is to be constructed
B.
The equipment on the plant site and location within its process block
95
If A = π r² solve for 'r':
Select one:
A.
√(πA)
B.
(πA)/2
C.
√(A/π)
D.
A²π
E.
Aπ².
C.
√(A/π)
96
Shear force at any section or point in a beam is the algebraic sum of all the:
Select one:
A.
Concentrated loads to the right or left of the section being considered
B.
Distributed loads to the right or left of the section being considered
C.
External forces
D.
Parallel forces to the right or left of the section being considered
E.
Vertical forces to the right or the left of the section being considered
E.
Vertical forces to the right or the left of the section being considered
97
The Characteristic Constant of each perfect gas is
Select one:
A.
The same for all perfect gases
B.
The same for all gases if their temperatures are the same
C.
The same for all gases if their pressures are the same
D.
Unique to that particular gas
E.
Varying directly with temperature changes
D.
Unique to that particular gas
98
The coefficient of volumetric expansion for solids is:
Select one:
A.
The cube of the coefficient of linear expansion
B.
Three times the coefficient of linear expansion
C.
Two times the coefficient of linear expansion
D.
The inverse of the coefficient of linear expansion
E.
The square root of the coefficient of linear expansion
B.
Three times the coefficient of linear expansion
99
A cylindrical tank with a vertical axis is 0.6 m in diameter. The oil level falls 20 cm in 17 days. Calculate the quantity of oil used per day in litres.
Select one:
A.
1.662 litres/day
B.
2.236 litres/day
C.
3.325 litres/day
D.
3.318 litres/day
E.
16.632 litres/day
C.
3.325 litres/day
100
Balance the following equation for the combustion of propane:
C3H8 + O2 -> CO2 + H2O + Heat
Select one:
A.
C3H8 + 8O2 -> 3CO2 + 8H2O + Heat
B.
C3H8 + O2 -> 3CO2 + 4H2O + Heat
C.
C3H8 + 5O2 -> 3CO2 + 4H2O + Heat
D.
2C3H8 + 6O2 -> 6CO2 + 8H2O + Heat
E.
2C3H8 + 4O2 -> 6CO2 + 6H2O + Heat
C.
C3H8 + 5O2 -> 3CO2 + 4H2O + Heat
101
A right triangle has a vertical height of 7 m and a base of 4 m. Find the area.
Select one:
A.
28 m²
B.
17 m²
C.
14 m²
D.
11 m²
E.
10.5 m²
C.
14 m²
102
In the following triangle, what is the value of sin B and what is the size of the angle B?
02_06
Select one:
A.
0.75, 48.59 degrees
B.
0.80, 53.13 degrees
C.
1.33, 48.6 degrees
D.
0.6, 36,87 degrees
E.
1.67, 53.32 degrees
D.
0.6, 36,87 degrees
103
If the volume of a confined gas is constant then the absolute pressure is directly proportional to the absolute temperature according to:
Select one:
A.
Boyle's Law
B.
Bernoulli’s' Law
C.
Charles' Law
D.
The General Gas Law
E.
Gay-Lussac's Law
E.
Gay-Lussac's Law
104
If four plates of identical physical dimensions are subjected to the same temperature difference, the one made of which material will conduct the most heat?
Select one:
A.
Aluminum
B.
Brass
C.
Copper
D.
Glass
E.
Steel
C.
Copper
105
A material that is able to stand up under a sudden impact or hard blow is described as:
Select one:
A.
Tough or having high impact strength
B.
Elastic or having the ability to resist a force trying to change its shape
C.
Malleable or easy to withstand great deformation
D.
Ductile or can be stretched under load without deformation
E.
Plastic and able to absorb the force
A.
Tough or having high impact strength
106
The transfer of heat by convection involves the:
Select one:
A.
Reduction of mass
B.
Movement of a fluid
C.
Transfer of elements
D.
Radiation of light
E.
Contact between molecules
B.
Movement of a fluid
107
The cantilever below is 6 m long. The force due to the lever's weight is 9 N, which acts through its mid-point. At 1 m from the pivoted end a force of 298 N acts upward. To keep the system in balance, a load must be placed at the extreme end of the cantilever. What is the magnitude of that load?
06_65
Select one:
A.
243 kg
B.
149.79 N
C.
45.17 kg
D.
4.6 kg
E.
41.75 kg
D.
4.6 kg
108
One of the conditions of a force system in equilibrium is:
Select one:
A.
There are no forces acting parallel to each other
B.
The resultant of the forces produce an acceleration
C.
The sum of the forces to the left must equal the sum of the forces to the right
D.
All the forces in the system must act to the same direction
E.
None of the above
C.
The sum of the forces to the left must equal the sum of the forces to the right
109
The Process Flow Diagram shows:
1. The major equipment items
2. Detailed instrument and control loops
3. The major process flows
4. The piping, drawn to scale
5. The exact orientation of the equipment within the facility
Select one:
A.
1, 2
B.
2, 3, 5
C.
3, 4
D.
1, 3
E.
2, 4, 5
D.
1, 3
110
Referring to the triangle ABC below, the ratio of: adjacent side / hypotenuse side, for angle A, is called the:
02_01
Select one:
A.
Sine of angle A or Sin A
B.
Cosine of angle A or Cos A
C.
Secant of angle A or Sec A
D.
Tangent of angle A or Tan A
E.
Cotangent of angle A or Cot A.
B.
Cosine of angle A or Cos A
111
In the following triangle, what is the value of sin B and what is the size of the angle B?
02_06
Select one:
A.
0.75, 48.59 degrees
B.
0.80, 53.13 degrees
C.
1.33, 48.6 degrees
D.
0.6, 36,87 degrees
E.
1.67, 53.32 degrees
D.
0.6, 36,87 degrees
112
An external source of current that travels along a pipe or other material that it comes into contact with can cause:
Select one:
A.
The pipe or material to become hot
B.
Stray current corrosion in the pipe or material
C.
A reduction in the galvanic corrosion rates
D.
An increase in the galvanic corrosion rates
E.
The generation of an electrical current
B.
Stray current corrosion in the pipe or material
113
Three identical bolts are required to carry a total load of 6.75 t. If the stress allowed in the material is 55,900 kPa, calculate the minimum diameter of each bolt.
Select one:
A.
0.88 mm
B.
22.4 mm
C.
25.4 mm
D.
28.5 mm
E.
66.4 mm
B.
22.4 mm
114
Average velocity is determined by:
Select one:
A.
V(ave) = v/2
B.
V(ave) = u + 2a s²
C.
V(ave) = (u + v)/2
D.
V(ave) = u - at
E.
V(ave) = ut + 1/2 a t²
C.
V(ave) = (u + v)/2
115
By definition, the result of a force moving through a distance is:
Select one:
A.
Power
B.
Acceleration
C.
Work
D.
Moment of force
E.
Velocity
C.
Work
116
The hardness of a material includes its ability to:
Select one:
A.
Absorb impact
B.
Resist penetration
C.
Resist bending
D.
Absorb heat
E.
Resist breaking
B.
Resist penetration
117
A boiler generates 10 kg of dry steam per 2 kg of coal burned. The heating value of the coal is 21,000 kJ/kg. The boiler produces 1500 kPa steam from 60°C feedwater. Calculate the efficiency.
Select one:
A.
57.3%
B.
92.3%
C.
60.5%
D.
74.7%
E.
85.0%
C.
60.5%
118
In the equation where E = stress(σ,τ)/strain(E), E is known as the modulus of elasticity or:
Select one:
A.
Modulus of rigidity
B.
Plastic modulus
C.
Wong's modulus
D.
Young's modulus
E.
Modulus of elongation
D.
Young's modulus
119
The natural or Naperian logarithm of 0.00478 is:
Select one:
A.
-5.3433
B.
-3.0407
C.
-2.3205
D.
2.3205
E.
5.3433.
A.
-5.3433
120
Salts present in the moisture in the air and on the surface of the material that is being corroded will:
1. Increase the corrosion rates of that material
2. Decrease the corrosion rates of that material
3. Cause a neutralizing film to form on the surface of the material
4. Increase the current carrying capacity of the water on the surface of the material
Select one:
A.
1, 2
B.
2, 3
C.
3, 4
D.
1, 3
E.
1, 4
E.
1, 4
121
Acceleration is:
Select one:
A.
The increase of the displacement of a body
B.
A body's rate of change of velocity
C.
Expressed usually as km/h
D.
The rate of change of time
E.
The increase of the velocity of a body
B.
A body's rate of change of velocity
122
Each circular half of the figure-8 race track shown here has an outside radius of 145 m. Calculate the minimum size, in hectares, of the rectangular lot that can contain this race track.
03_08
Select one:
A.
16.82 ha
B.
18.1260 ha
C.
19.8397 ha
D.
116.0698 ha
E.
119.0678 ha
A.
16.82 ha
123
Find the vertical component of the resultant of the forces in the figure below.
/jlms/QB/SI/3rd/3rd_SI_A1_04_19.gif
Select one:
A.
1.162 kN act upward
B.
1.5 kN act upward
C.
7.089 kN act upward
D.
12.868 kN act upward
E.
12.868 act down
C.
7.089 kN act upward
124
A perfect gas is compressed under conditions of constant temperature to a volume of 30 m³. If the final pressure of the gas is 450 kPa gauge and the initial volume was 135 m³, what was the initial pressure? (Assume atmospheric pressure to be 101.3 kPa)
Select one:
A.
122.5 kPa gauge
B.
21.2 kPa gauge
C.
223.8 kPa gauge
D.
101.3 kPa gauge
E.
124.8 kPa gauge
B.
21.2 kPa gauge
125
In the following triangle, find the value of Cos B and its corresponding angle:
02_06
Select one:
A.
0.75, 48.59 degrees
B.
0.80, 36.87 degrees
C.
1.33, 48.60 degrees
D.
0.6, 36.87 degrees
E.
1.67, 53.22 degrees.
B.
0.80, 36.87 degrees
126
An octagon is machined from a circle having a diameter of 8 cm. How much area needs to be removed from the circle?
03_09
Select one:
A.
5.012 cm²
B.
6.147 cm²
C.
6.862 cm²
D.
7.147 cm²
E.
8.862 cm²
A.
5.012 cm²
127
Find the antilogarithm of 3.7996.
Select one:
A.
6303.76
B.
630.4
C.
3
D.
63
E.
6.3
A.
6303.76
128
What is the angle of inclination of a stairway with the floor, if the steps have a tread of 20 cm and a rise of 18 cm as illustrated in the sketch?
02_05
Select one:
A.
25.8 degrees
B.
36 degrees
C.
42 degrees
D.
48 degrees
E.
64.12 degrees.
C.
42 degrees
129
Sacrificial Anodes are used to reduce galvanic corrosion of tanks and/or vessels by:
Select one:
A.
Accepting the corrosion action in place of, or instead of, the main equipment surface
B.
Isolating the electrolyte from the internal surface of the main equipment
C.
Reversing the flow of electrical current from the cathode to the anode
D.
Stopping the flow of electrical current completely by breaking the circuit
E.
Providing an anchor point for the vessel
A.
Accepting the corrosion action in place of, or instead of, the main equipment surface
130
In order to calculate the power in watts required to lift a 25 kg concrete block to a height of 40 m, you would also need to know the:
Select one:
A.
Time in seconds
B.
Specific gravity of concrete
C.
Mass-to-height ratio
D.
Atmospheric pressure
E.
Volume and density of the block
A.
Time in seconds
131
If a boiler has a factor of evaporation of 1.075 and its actual flow rate is 220 kg/min, calculate the equivalent evaporation in kg/hr.
Select one:
A.
32871 kg/hr
B.
13200 kg/hr
C.
12279 kg/hr
D.
236.5 kg/hr
E.
14190 kg/hr
E.
14190 kg/hr
132
In a speed test, a car traveling at 40 km/h increases its velocity uniformly for 4 seconds, while traveling the controlled distance of 100 m. Its acceleration in m/s² is:
Select one:
A.
25 m/s²
B.
6.945 m/s²
C.
4.45 m/s²
D.
2.8 m/s²
E.
111.15 m/s²
B.
6.945 m/s²
133
The formula Work = (P1V1 – P2V2) / n - 1 is used to describe expansion during:
Select one:
A.
An isothermal process
B.
An isentropic process
C.
A polytropic process
D.
An adiabatic process
E.
An enthalpy process
C.
A polytropic process
134
A proton has:
Select one:
A.
A negative electrical charge
B.
A positive electrical charge
C.
No electrical charge
D.
A mass of zero
E.
No attraction to the electron
B.
A positive electrical charge
135
During the design and pre-construction phase, P&IDs are used to:
1. Design the control loops and electrical motor control centers
2. Make a detailed equipment list from which to base cost estimates
3. Identify the correct layout of the piping for the pipe fitters and welders
4. Define the scope of the project
Select one:
A.
1, 2
B.
2, 3
C.
3, 4
D.
1, 3
E.
2, 4
E.
2, 4
136
The total amount of heat, in kJ, that is absorbed by the water/steam in a boiler in a given period of time is called the:
Select one:
A.
Heat rate
B.
Factor of evaporation
C.
Equivalent evaporation
D.
Total enthalpy
E.
Latent heat of the transformation
A.
Heat rate
137
Steam that is superheated:
Select one:
A.
Has a greater specific volume than saturated steam at the same pressure
B.
Has less heat than saturated steam at the same pressure
C.
Contains more energy but has the same temperature as saturated steam
D.
Has a volume equal to that of saturated steam
E.
All of the above
A.
Has a greater specific volume than saturated steam at the same pressure
138
Stress Corrosion Cracking is the failure of a material due to cracking which is produced by:
Select one:
A.
Straining the material past its elastic point under corrosive atmospheric conditions
B.
A combination of service conditions and the environment that the material is in
C.
Stressing the material by welding it and then stress relieving it at too high a temperature
D.
Incorrect water treatment of the boiler feed-water
E.
The effects of continued water hammer
B.
A combination of service conditions and the environment that the material is in
139
Materials that can be hammered or rolled into shape without breaking are:
Select one:
A.
Brittle
B.
Hard
C.
Malleable
D.
Plastic
E.
Ductile
C.
Malleable
140
If the amount that a bolt is stretched when subjected to a load is divided by the original length, the ratio found is classed as:
Select one:
A.
Linear stress
B.
Compressive stress
C.
Axial stress
D.
Linear strain
E.
Axial thrust
D.
Linear strain
141
An example of a set of complementary angles would be:
Select one:
A.
45 degrees, 45 degrees and 60 degrees
B.
60 degrees, 60 degrees and 60 degrees
C.
75 degrees and 105 degrees
D.
55 degrees and 45 degrees
E.
75 degrees and 15 degrees.
E.
75 degrees and 15 degrees.
142
The kinetic energy of a 1000 kg automobile travelling at 60 km/h is:
Select one:
A.
16.67 kJ
B.
60 kJ
C.
138.8 kJ
D.
60 000 kJ
E.
None of the above
C.
138.8 kJ
143
An example of an obtuse angle is:
Select one:
A.
135 degrees
B.
180 degrees
C.
33 degrees 13 minutes 45 seconds
D.
90 degrees
E.
270 degrees.
A.
135 degrees
144
Calculate the amount of heat required to raise the temperature of 0.5 kg of aluminum by 35°C.
Select one:
A.
2.27 kJ
B.
15.91 kJ
C.
16.5 kJ
D.
22.7 kJ
E.
45.6 kJ
B.
15.91 kJ
145
The most destructive type of Stray Current Corrosion is:
1. AC Current directly from the Generator
2. AC Current from the transformer once its voltage has been reduced
3. DC Current from a welding device
4. DC Current from an improperly installed cathodic protection system
Select one:
A.
1, 2
B.
2, 3
C.
3, 4
D.
1, 3
E.
1, 4
C.
3, 4
146
The maximum allowable stress of a material that has an ultimate strength of 525 MPa and a safety factor of 7 would be:
Select one:
A.
3675 MPa
B.
367.5 MPa
C.
75 MPa
D.
525 kPa
E.
75 kPa
C.
75 MPa
147
Addition of sensible heat to a substance:
Select one:
A.
Results in a change of state from solid to liquid
B.
Cannot be read on a thermometer
C.
Causes a rise in temperature
D.
Is the sum of the latent heat plus heat of evaporation
E.
Results in a change of phase from liquid to vapor
C.
Causes a rise in temperature
148
What mass of air can be held in a storage cylinder at 95°C and 1500 kPa absolute pressure if the tank volume is 9.5 m³?
Select one:
A.
134.9 kg
B.
144.1 kg
C.
154.9 kg
D.
522.6 kg
E.
725 kg
A.
134.9 kg
149
How much work is required to compress a gas polytropically from 195 kPa abs to 1600 kPa abs while reducing the volume to 0.8 m3? Use the value of "n" for this gas as 1.35.
Select one:
A.
399.26 kJ
B.
758.95 kJ
C.
1540 kJ
D.
1735 kJ
E.
1889 kJ
C.
1540 kJ
150
The plan view of a pipe line is shown below. Find the length of the straight line from A to B, when a = 6 m, b = 11 m (the whole length), and c = 3 m.
02_21
Select one:
A.
11.21 m
B.
12.11 m
C.
13.21 m
D.
14.21 m
E.
15.11 m.
D.
14.21 m
