Questions Bank pt 3

Question 1

What is the property of matter which is the reluctance to change its state of rest of uniform motion?

Answer 1

inertia

Question 2

“If no net force acts on it, an object at rest will remain at rest and an object in motion will remain in motion at constant velocity”. The statement is the

Answer 2

first law of motion

Question 3

“When an object exerts a force on another object, the second object exerts on the first a force of the same magnitude but in the opposite direction”. The statement is the

Answer 3

third law of motion

Question 4

“The net force acting on an object equals the product of the mass and the acceleration of the object. The direction of the force is the same as that of the acceleration”. The statement is the

Answer 4

second law of motion

Question 4

What refers to the force with which the earth attracts an object?

Answer 4

weight

Question 5

How many kilograms are there in 1 slug?

Answer 5

14.6

Question 6

What refers to an actual force that arises to oppose relative motion between contracting surfaces?

Answer 6

friction

Question 7

What refers to the force between two stationary surfaces in contact that prevents motion between them?

Answer 7

Static friction

Question 8

What is the maximum value of the static friction?

Answer 8

starting friction

Question 9

What is TRUE between kinetic friction and static friction?

Answer 9

kinetic friction is always less than static friction

Question 10

What is another term for kinetic friction?

Answer 10

sliding friction

Question 11

For the same material in contact, what is TRUE between coefficient of static friction and coefficient of kinetic friction?

Answer 11

coefficient of static friction is always greater than the coefficient of kinetic friction

Question 12

Efficiency of a machine is the ratio of:

Answer 12

power input to power output

Question 13

What is the energy something possesses by virtue if its motion?

Answer 13

kinetic energy

Question 14

What is the energy something possesses by virtue of its mass?

Answer 14

rest energy

Question 15

What is the energy something possess by virtue of its position?

Answer 15

potential energy

Question 16

When the vector sum of the external forces acting on the system of particles equals zero, the total linear momentum of the system

Answer 16

remains constant

Question 17

What is conserved in an elastic collision?

Answer 17

kinetic energy

Question 18

Inelastic collision, kinetic energy is conserved. This statement is

Answer 18

false

Question 19

What will happen to the kinetic energy if it is a completely inelastic collision?

Answer 19

it is lost to maximum value

Question 20

Coefficient of restitution is the ratio of

Answer 20

relative speed after collision to relative speed before collision

Question 21

What is the coefficient of restitution for a perfectly elastic collision?

Answer 21

1

Question 22

The coefficient of restitution always applies

Answer 22

jointly to the colliding objects

Question 23

“When the vector sum of the external forces acting on a system of particles equals zero, the total linear momentum to the system remaining constant”. This statement is known as:

Answer 23

law of conservation of momentum

Question 24

What refers to the product of t he force and the time during which a force acts?

Answer 24

impulse

Question 25

Momentum is the product of

Answer 25

velocity and mass

Question 26

What refers to the force perpendicular to the velocity of an object moving along a curve path?

Answer 26

centrifugal force

Question 27

The centripetal force is

Answer 27

directed toward the center of curvature of the path

Question 28

What refers to the time needed by an object in uniform circular motion to complete an orbit?

Answer 28

period

Question 29

The centripetal acceleration of a particle in uniform motion is _____ the radius of its path

Answer 29

inversely proportional

Question 30

"Every object in the universe attracts every other object with a force directly proportional to the product of their masses and inversely proportional to the square of the distance separating". This statement is known as:

Answer 30

Law of universal gravitation

Question 31

Gravitation occurs between all objects in the university by virtue of their

Answer 31

mass

Question 32

The gravitational force of the earth on an object varies of the ______ the distance of the object from the center of the earth

Answer 32

Inversely as the square of

Question 33

A rotating body has kinetic energy. This statement is

Answer 33

always true

Question 34

What type of energy is usually transmitted by rotary emotion?

Answer 34

mechanical energy

Question 35

A covered, usually small tank used chiefly for slowing wastewater for domestic use other than for drinking purposes

Answer 35

catch basin

Question 36

A valve placed on the water main on which building water service is connected

Answer 36

corporation stop

Question 37

Porcelain enamel ware, such as bathtubs, toilet bowls, wash basins, etc.

Answer 37

sanitary ware

Question 38

A piece of metal fitted under another piece of flat metal or wood over which water is expected to run and is usually found in roofs is called?

Answer 38

flashing

Question 39

The rate of flow of liquid measured per unit of time, usually in gallons per minute

Answer 39

discharge

Question 40

The unit weight in its liquid form in US gallon

Answer 40

3.778 kgs

Question 41

Which of the following testing method is most recommended for sanitary piping system?

Answer 41

hydrostatic test

Question 42

One cubic foot is equal to how many cubic inches?

Answer 42

1728 cu. in

Question 43

Which of the following is considered the most efficient type of venting system?

Answer 43

individual/ back vent/ revent

Question 44

Which of the following is an insanitary type of water closet?

Answer 44

all of these

Question 45

Plastic pipes are manufactured from

Answer 45

thermoset plastic

Question 46

Galvanized steel pipe are general measured by

Answer 46

inside diameter

Question 47

Water hammer arrester shall conform to

Answer 47

ASSE 1010

Question 48

A wet vent may

Answer 48

extend from the connection of the dry. vent down to the lowest fixture drain connection

Question 49

Which of the following does not require the display of a license?

Answer 49

vehicle signs

Question 50

Gas appliance connectors shall pass through any of the following except.

Answer 50

appliance housing

Question 51

The extended portion of the pipe that is closed on one end to which no connections are made on the extended potion

Answer 51

blind end

Question 52

Expansion loop is used in what kind of piping system?

Answer 52

hot water piping system

Question 53

The simplest and cheapest bonnet design of a valve

Answer 53

screwed

Question 54

A vertical length of soil or waste stack at eight feet in height within which horizontal branches from one storey or floor of the building are connected to the stack

Answer 54

branch interval

Question 55

In a PVC pipe joint, what is the common color of a primer?

Answer 55

purple-colored

Question 56

Another term for pipe thread lubricants

Answer 56

pipe dope

Question 57

Two most common forms of Teflon threads sealant

Answer 57

liquid and tape

Question 58

A self-sealing gasket is found in a

Answer 58

victaulic fitting

Question 59

CCIP means

Answer 59

centrifugally cast iron pipe

Question 60

What must the interceptors used in bottling establishments be capable of separating from other solids before discharging the waste into the drainage system?

Answer 60

a broken glass or other solids

Question 61

In the water test of the entire plumbing system all openings should be tightly closed except at

Answer 61

highest opening

Question 62

A kind of clean out plugs that will be installed in case where raised heads may cause hazards to passing personnel or vehicles

Answer 62

countersunk

Question 63

The chemical introduced in the coagulation process of water purification

Answer 63

aluminum sulfate

Question 64

the smallest form of precipitation

Answer 64

drizzle

Question 65

A type of bathtub which is permanently attached or built into the walls and floors of the bathroom

Answer 65

recessed

Question 66

Is there such things as hair interceptor?

Answer 66

yes

Question 67

In storage racks, plastic pipes should ideally have how many supports at the bottom evenly spaced?

Answer 67

6

Question 68

Where can you find a bubbler?

Answer 68

drinking fountain

Question 69

Which tool is recommended for removing and assembling lavatory fittings?

Answer 69

basin wrench

Question 70

The cartesian coordinate system has how many octants?

Answer 70

8

Question 71

What type of PVC piper is used on sanitary drainage system?

Answer 71

series 1000

Question 72

Where do you use a crowfoot?

Answer 72

vent piping system

Question 73

When the velocity if the flowing fluid in a pipe is doubled, the pressure drop in the pipeline increases by

Answer 73

300%

Question 74

The largest source of water for Metro Manila comes from

Answer 74

Angat Dam

Question 75

What percentage of water comprises the human body?

Answer 75

60%

Question 76

of the total precipitation, how many percentage of water percolates to the ground?

Answer 76

33 - 1/3%

Question 77

The maximum spacing for rainwater leaders (downspouts) is

Answer 77

75

Question 78

Refers to any rod-shaped, non-spore-forming gram negative bacteria capable of growth in the presence of bile sales, or other surface-active agents with similar growth-inhibiting properties which are cytochromeoxidase negative and able to ferment lactose at either 35 or 37 deg. C with the production of acid, gas, and aldehyde within 24-48 hours

Answer 78

coliform organisms

Question 79

The common method of detection and estimation of coliform organism in a given sample where in most probable number (MPN) of coliforms present is counted

Answer 79

multiple tube fermentation

Question 80

Is a plumbing design in which centrally located manifolds distribute water to each fixture with dedicated hot and cold water lines

Answer 80

distribution run

Question 81

What would be the result of a partially plugged bypass orifice in a flushometer

Answer 81

long flush cycle

Question 82

When installing glass piping; if one end needs to be field cut, the ends should be joined:

Answer 82

plain to plain