MESL 2 Flashcards by JM Park

If the roots of an equation are zero, then they are classified as _______.

a. extraneous roots
b. trivial solution
c. zero function
d. hyperbolic solution

b. trivial solution

How well did you know this?

Not at all

Perfectly

In polar coordinate system, the polar angle is positive when _______.

a. measured at the terminal side of 0
b. measured clockwise
c. measured counterclockwise
d. none of these

c. measured counterclockwise

How well did you know this?

Not at all

Perfectly

A conic section whose eccentricity is less than one (1) is known as _______.

a. an ellipse
b. a hyperbola
c. a parabola
d. a circle

a. an ellipse

How well did you know this?

Not at all

Perfectly

When two lines are perpendicular, the slope of one is _______.

a. equal to the reciprocal of the other
b. equal to the negative reciprocal of the other
c. equal to the other
d. equal to the reciprocal of the other

b. equal to the negative reciprocal of the other

How well did you know this?

Not at all

Perfectly

In polar coordinates system, the length of the ray segment from a fixed origin is known as _______.

a. Radius vector
b. Minimum point
c. Hypotenuse
d. Amplitude

a. Radius vector

How well did you know this?

Not at all

Perfectly

What is the length of time, usually in years, for cumulative net annual profit equal to the investment?

a. Price earning ratio
b. Payback period
c. Return of investment
d. Receivable turn over

b. Payback period

How well did you know this?

Not at all

Perfectly

What is the type of interest that is periodically added to the amount of loan so that the subsequent interest is based on the cumulative amount?

a. Simple interest
b. Compound interest
c. Sinking fund
d. Interest rate

b. Compound interest

How well did you know this?

Not at all

Perfectly

What is the additional cost of producing one more unit of a product?

a. Variable cost
b. Fixed cost
c. Marginal cost
d. Sunk cost

c. Marginal cost

How well did you know this?

Not at all

Perfectly

Things that cannot be quantitively measured or valued such as items of costs and physical assets.

a. Investment
b. Capital
c. Tangibles
d. Intangibles

d. Intangibles

How well did you know this?

Not at all

Perfectly

When all of the atoms of a molecule are the same, the substance is called _______.

a. A chemical
b. A compound
c. An ion
d. An element

b. A compound

How well did you know this?

Not at all

Perfectly

What controls the amount of electricity a battery can produce?

a. Strength of the acid
b. Discharge load
c. Thickness of the plane
d. Plate surface area

a. Strength of the acid

How well did you know this?

Not at all

Perfectly

Neutron number is equal to the _______.

a. Atomic weight minus mass number
b. Atomic number minus mass number
c. Mass number minus atomic weight
d. Mass number minus atomic number

d. Mass number minus atomic number

How well did you know this?

Not at all

Perfectly

What refers to the minimum amount of energy required to initiate a chemical reaction?

a. Initial energy
b. Reaction energy
c. Atomic energy
d. Activation energy

d. Activation energy

How well did you know this?

Not at all

Perfectly

If a thick cylindrical shell is subjected to internal pressure, then hoop stress, radial stress and longitudinal stress at a point in the thickness will be _______.

a. all tensile
b. tensile, compressive and tensile respectively
c. all compressive
d. tensile, compressive and compressive respectively

b. tensile, compressive and tensile respectively

How well did you know this?

Not at all

Perfectly

The characteristics of a common logarithm of a number greater than 1 is ______.

a. Zero and positive
b. Positive
c. Negative
d. Zero

a. Zero and positive

How well did you know this?

Not at all

Perfectly

The maximum shear stress occurs on the outermost fibers of a circular shaft under torsion. In a close coiled helical spring, where does the maximum shear stress occur?

a. End coils
b. Innermost fibers
c. Fibers at mean diameter
d. Outermost fibers

b. Innermost fibers

How well did you know this?

Not at all

Perfectly

A solid block which is resting on a frictionless surface gets hit by a bullet which gets embedded into it. During this process _______.

a. Nothing can be said
b. Both momentum and kinetic energy are
conserved
c. Only momentum is conserved
d. Only kinetic energy is conserved

c. Only momentum is conserved

How well did you know this?

Not at all

Perfectly

This is evidently the same as a process carried out according to Boyle’ s Law.

a. Isothermal process
b. Adiabatic process
c. Isometric process
d. Isobaric process

a. Isothermal process

How well did you know this?

Not at all

Perfectly

In the polytropic process equation PV^n = constant, if n = 0, the process is termed as _______.

a. constant temperature
b. adiabatic
c. constant pressure
d. constant volume

c. constant pressure

How well did you know this?

Not at all

Perfectly

In the polytropic process equation PV^n = constant, if n is infinitely large, the process is termed as _______.

a. adiabatic
b. constant volume
c. constant pressure
d. constant temperature

b. constant volume

How well did you know this?

Not at all

Perfectly

Separation of fluid flow is caused by _______.

a. presence of adverse pressure gradient
b. reduction of pressure in the direction of flow
c. presence of favorable pressure gradient
d. reduction of the boundary layer thickness

a. presence of adverse pressure gradient

How well did you know this?

Not at all

Perfectly

If a vessel containing liquid moves downward with constant acceleration g, then _______.

a. there will be vacuum in the liquid
b. the pressure throughout the liquid mass is greater than atmospheric pressure
c. the pressure throughout the liquid mass is
atmospheric
d. the pressure in the liquid mass is greater than the hydrostatic pressure

c. the pressure throughout the liquid mass is

atmospheric

How well did you know this?

Not at all

Perfectly

Assumption/s made in deriving the Bernoulli’ s equation are as follows _______.

a. The flow is incompressible
b. The flow is steady
c. The fluid is real
d. All of the above

a. The flow is incompressible

How well did you know this?

Not at all

Perfectly

Which of the following devices is used to measure velocity of a fluid?

a. Notch
b. Orifice meter
c. Venturimeter
d. Pitot tube

d. Pitot tube

How well did you know this?

Not at all

Perfectly

Calculus was invented by _______. a. Newton and Leibniz b. Newton c. Gauss d. Leibniz

a. Newton and Leibniz

For a given function, it is found that f(t) = f(-t). What type of symmetry does f(t) have? a. Quarter-wave symmetry b. Rotational symmetry c. Odd symmetry d. Even symmetry

d. Even symmetry

The number of successful outcomes divided by the number of possible outcomes is called _______. a. Permutation b. Probability c. Odd d. Combination

b. Probability

Possible outcome of an experiment is called _______. a. Random point b. Sample space c. Finite set d. Event

d. Event

A force F acting on a body moving in a circle of radius r is always perpendicular to the velocity v. The work done on the body is _______. a. F b. F x r c. F x πr d. F x v

c. F x πr

Kinetic energy for a projectile of range R is minimum for a distance of ______. a. 0.25 R b. 0.75 R c. 0.5 R d. R

c. 0.5 R

Spring constant of a coil-spring is _______. a. Inversely proportional to the compression or extension produced. b. Inversely proportional to number of coils in the spring c. Directly proportional to the compression or extension produced. d. Directly proportional to the square of the number of coils in the spring.

b. Inversely proportional to number of coils in the spring

A unit matrix of order n is of rank _______. a. n b. 0 c. 1 d. 2

a. n

What is a collection of numbers or letters used to represent a number arrange properly in rows and columns? a. Determinant b. Equation c. Matrix d. Array

c. Matrix

Which of the following cannot be an operation of matrices? a. Division b. Subtraction c. Addition d. Multiplication

a. Division

If two rows of a determinant are interchange, the determinant _______. a. changes sign and value b. changes sign c. becomes the inverse of the former d. remain unchanged

b. changes sign

Which of the following statements applies to the bisection method used for finding roots of functions? a. It is faster than the Newton-Raphson method b. Converges within a few iteration c. It requires that there will be no error in determining the sign of the function d. It is guaranteed to work for all continuous functions

d. It is guaranteed to work for all continuous functions

The degree of a polynomial or equation is the _______. a. Exponent of the first variable b. Maximum exponent of x c. Maximum sum of exponents in one term d. Maximum exponent

c. Maximum sum of exponents in one term

The matrix obtained from a given matrix by changing rows into columns is called _______. a. skew-symmetric matrix b. orthogonal matrix c. symmetric matrix d. None of these

d. None of these

The equation x+y=2; 4x+3y=7; x-2y=1 are _______. a. consistent but have many solutions b. inconsistent c. consistent and have unique solutions d. None of these

d. None of these

An algebraic expression which can be represented as a quotient of two polynomials. a. Rational algebraic expression b. Complex algebraic expression c. Irrational algebraic expression d. Reduced algebraic expression

a. Rational algebraic expression

The vibration produced in stretched wire of musical instrument is _______. a. Free transverse b. Forced transverse c. Free longitudinal d. Forced longitudinal

b. Forced transverse

What are the two kinds of irrational numbers? a. Geometric numbers and Transcendental numbers b. Algebraic numbers and transcendental numbers c. Algebraic numbers and Geometric numbers d. Algebraic numbers and Trigonometric numbers

b. Algebraic numbers and transcendental numbers

The arc length equal to the radius of the circle is called _______. a. 1 quarter circle b. 1 grad c. 1 radian d. π radian

c. 1 radian

The area bounded by two concentric circles is called _______. a. Ring b. Segment c. Sector d. Annulus

d. Annulus

What is the sum of the sides of a polygon? a. Perimeter b. Area c. Circumference d. Volume

a. Perimeter

Aside from the straight-line method of depreciation, what other method assumes a uniform annual depreciation? a. Double Declining balance Method b. Sinking Fund Method c. Matheson Formula Method d. Service output method

c. Matheson Formula Method

The efficiency of an investment is known as _______. a. effective rate of interest b. rate of return c. rate of discount d. rate of interest

b. rate of return

What is a depreciation method where depreciation charge for any period is charged on the basis of the service that has been rendered during the period? a. service output method b. sinking fund c. declining balance d. straight line

a. service output method

What is a form or report stating the financial status of an individual or firm at a particular point in time? a. financial statement b. trial balance c. balance sheet d. income statement

c. balance sheet

This represents the ownership of stockholders who have a residual claim on the assets of the corporation after all other claims have been settled. a. incorporators stock b. common stock c. preferred stock d. authorized capital

a. incorporators stock

The product of mass and velocity of a moving a body is called _______. a. moment b. momentum c. power d. impulse

b. momentum

What refers to a chemical formula that shows how atoms are bonded to one another in a molecule? a. Structural formula b. Standard formula c. Bonding formula d. Molecular formula

a. Structural formula

A compound distinguished by a high molar mass, ranging into thousands and millions of grams, and made of many repeating cells is called _______. a. Oxoacid b. Nucleotide c. Electrolyte d. Polymer

d. Polymer

What is the pH level for base? a. Less than 7 b. Greater than 7 c. Exactly 7 d. Greater than 14

b. Greater than 7

Joule (J) is the unit of _______. a. work b. torque c. power d. momentum

a. work

Momentum = Force x _______. a. Velocity b. ½ Velocity c. Time d. (Velocity)^2

c. Time

A simply supported laterally beam was found to deflect more than a specified value. Which of the following measures will reduce the deflection? a. Select a different material having lesser modulus of elasticity b. Increase the magnitude of the load c. Increase the area of moment of inertia d. Increase the span of the beam

c. Increase the area of moment of inertia

Which of the following tools is the hardest? a. Ceramic tools b. Carbide tools c. High speed steel tools d. High carbon steel tools

b. Carbide tools

What is the property by which an amount of energy is absorbed by a material without plastic deformation? a. resilience b. ductility c. toughness d. impact strength

a. resilience

Which one of the following features improves the fatigue strength of a metallic material? a. Scratching the surface b. Increasing the temperature c. Under stressing d. Overstressing

c. Under stressing

Strain in a direction at a right angle to the direction of applied force is known as ________. a. shear strain b. volumetric strain c. lateral strain d. yield strain

c. lateral strain

There is always a limiting value of load up to which the strain totally disappears on the removal of load, the stress corresponding to this load is called ________. a. unit stress b. elastic limit c. yield stress d. fracture

b. elastic limit

Dryness fraction of steam is defined as ________. a. mass of water vapor in suspension/mass of dry steam b. mass of water vapor in suspension/ (mass of water vapor in suspension + mass of dry steam) c. mass of dry steam/mass of water vapor in suspension d. mass of dry steam/ (mass of dry steam + mass of water vapor in suspension)

d. mass of dry steam/ (mass of dry steam + mass of | water vapor in suspension)

The process or systems that do not involve heat are called _______. a. adiabatic process b. isothermal processes c. equilibrium processes d. thermal processes

a. adiabatic process

Which of the following can describe isothermal process? a. pressure remains constant b. change in internal energy is zero c. temperature increases gradually d. temperature remains constant

b. change in internal energy is zero

Which of the following statement/s is/are correct: The metacentric height of a floating body depends 1. directly on the shape of its water-line area 2. on the volume of liquid displaced by the body 3. on the distance between the metacenter and the center of gravity 4. on the second moment of water-line area a. 1 and 4 b. 1 and 2 c. 2 and 3 d. 3 and 4

c. 2 and 3

Which one of the following statements is true to a two-dimensional flow of ideal fluids? a. Stream function will exist but potential function may or may not exist b. Both potential function and stream function must exist for every flow c. Potential function exists if stream function exists d. Stream function may or may not exist

a. Stream function will exist but potential function | may or may not exist

Water hammer in pipelines takes place when ________. a. fluid is flowing with high pressure b. flowing fluid is suddenly brought to rest by closing a valve c. flowing fluid is brought to rest by gradually closing a valve d. fluid is flowing with high velocity

d. fluid is flowing with high velocity

Solutions composed of two or more metals are called ________. a. Unsaturated solution b. Alloys c. Supersaturated solution d. Saturated solution

b. Alloys

Euler equation for water turbine is derived on the basis of _______. a. rate of change of angular momentum b. conservation of mass c. rate of change of velocity d. rate of change of linear momentum

a. rate of change of angular momentum

The maximum inclination of the jet issuing from a nozzle with horizontal is ________. a. 30° b. 45° c. 60° d. 90°

a. 30°

A ball and socket joint _______. a. can resist moment along all the three axes x, y and z b. can resist moment along y-axis c. cannot resist moment along any axis d. cannot resist moment along x-axis

c. cannot resist moment along any axis

Radius of gyration is independent of _______. a. velocity b. mass c. axis of rotation d. None of these

b. mass

Determine the percentage change in the time period of simple pendulum if its length is increased by 8%. a. 4% b. 8% c. 16% d. 64%

a. 4%

For simple harmonic motion acceleration is directly dependent upon ________. a. Linear velocity b. Frequency c. Displacement d. Amplitude

c. Displacement

If the displacement increases, the time period of oscillation of a simple pendulum ________. a. decreases b. increases c. may increase or decrease d. remains same

d. remains same

If a shaft carries two rotors at it ends, the number of nodes will be ________. a. One b. Two c. Three d. Nil

a. One

The determinant of m x n matrix is defined if ________. a. m = n b. m ≠ -n c. m2 = n2 d. None of these

b. m ≠ -n

If the row and column of determinant are interchanged, the value of the new determinant will be ________. a. unchanged b. (-1) times c. 3 times d. None of these

a. unchanged

Which of the following is false? a. If the elements of a row (or column) are divided by 1/3, then the value of the new determinant is 3 times the value of the original determinant b. The determinant of a square is always defined. c. If any two rows (or column) of a determinant are identical then the value of determinant will be zero d. The value of determinant can never be negative

d. The value of determinant can never be negative