Mechanical Engineering Test Answer

Which technique among the following is known as 'time phase of loading'.

a. routing

b. scheduling

c. dispatching

___________ is the operation of enlarging a previously drilled hole.

a. Reaming

b. Tapping

c. Boring

d. Lapping

Which among the following is not a characteristic of rolling contact bearing?

a. Low starting friction

b. Makes less noise at high speeds

c. Ability to withstand shock loads

d. Low maintenance cost

Which among the following types of chips is usually produced during the machining of brittle materials?

a. Discontinuous chips

b. Continuous chips with no built up edges

c. Continuous chips with built up edges

The process to improve the fatigue resistance in metals by producing compressive stresses in its surface is known as __________.

a. cold peening

b. cold bending

c. cold spinning

d. cold extrusion

The Scotch yoke mechanism and Oldham's coupling is an example of:

a. double slider crank chain.

b. single slider crank chain.

c. quadric cycle chain.

A couple of two bodies produces which type of motion?

a. Rotational motion

b. Translatory motion

c. Rotational and translatory motion

If Q is energy, W is external work done and E is internal energy then, According to the first law of thermodynamics, energy Q is equal to:

a. Q = W + E

b. Q = W – E

c. Q = W / E

d. Q = W x E

Which among the following plant layout is known as 'functional layout' or 'analytical layout'?

a. Process layout

b. Product layout

c. Fixed position layout

Calculate the number of joints in a chain if the number of links is 5.

a. 3.5

b. 4.5

c. 5.5

d. 6.5

The ability of a material to embed small particles of dust, grit etc. is known as ___________.

a. conformability

b. bondability

c. embeddability

d. compressibility

If L is the length of the journal and d is the diameter of the journal then, in a square bearing:

a. L = d

b. L ≠ d

c. L + d = 1

d. L = 1 + d

Calculate the moment of a 20 newtons force at 10 meters perpendicular distance from the point about which the moment is required.

a. 200 newton meters

b. 100 newton meters

c. 150 newton meters

d. 250 newton meters

If M - bending moment, I - moment of inertia, E - young's modulus of elasticity and R - radius of curvature then, which of the following is the correct bending equation for a beam?

a. M/I = R/E

b. I/M = R/E

c. M/I = E/R

Which among the following is a spring controlled governor?

a. Watt governor

b. Porter governor

c. Hartnell governor

The smallest circle drawn to the cam profile is known as ________.

a. base circle

b. pitch circle

c. prime circle

In a programmed evaluation and review technique, if the slack of an activity is negative, then what can be stated for the project completion?

a. Completion of the project is not delayed.

b. Additional resources are required to complete the project in time.

c. Completion of the project is delayed.

In a simple harmonic motion, number of cycles produced per second is known as:

a. velocity.

b. acceleration.

c. frequency.

d. amplitude.

e. periodic time.

Calculate the economic order quantity of a plant in which the total raw material utilized per year is 1600 tonnes, procurement cost per order is $1000 and the annual inventory carrying cost per item is $10.

a. 428.68

b. 565.68

c. 636.68

d. 700.68

If the motion between a pair takes place in more than one direction, then this kind of motion is termed as ___________.

a. completely constrained motion

b. incompletely constrained motion

c. successfully constrained motion

Which type of thread is used in bench vices in manufacturing units?

a. Acme thread

b. Buttress thread

c. Knuckle thread

d. Square thread

Calculate the centrifugal force for a body moving in a circular path, given that the mass of the body is 10 kilogram, its angular velocity is 10 radians per second and the radius of the circular path is 10 millimeters.

a. 30000 newtons

b. 10000 newtons

c. 20000 newtons

d. 15000 newtons

Within which angular range is the shear stress maximum if a body is subjected to tensile stress in one plane?

a. 45º and 135º

b. 50º and 175º

c. 40º and 130º

d. 55º and 180º

Calculate the strain in a material whose original length before undergoing strain is 10 centimeters and the length after undergoing strain is 100 centimeters.

a. 9

b. 110

c. 90

d. 0.1

___________ is a beam having its end portion extended beyond the support.

a. Cantilever beam

b. Simply supported beam

c. Overhanging beam

d. Continuous beam

The work measurement technique is concerned with:

a. the time during which maximum production is done.

b. the time during which no production is done.

c. the processes to simplify the production work.

d. the development of economical methods of carrying out production work.

If we have to choose a grinding wheel having the least hardness, which grade of grinding wheel should be chosen?

a. Grade A to H

b. Grade I to P

c. Grade Q to Z

What is the significance of the above given symbol in work study technique?

a. Inspection of materials

b. Transport of materials

c. Storage of materials

d. Operation of materials

The bolt and nut is an example of a:

a. turning pair

b. rolling pair

c. screw pair

d. spherical pair

Calculate the value of crippling load of a specimen, given that the crushing stress is 160 newtons per square meter, cross sectional area is 80 square millimeters, Rankine's constant is 1, length of column is 1 millimeter and the value of radius of gyration is also 1.

a. 7000

b. 6400

c. 8000

d. 8500

Which among the following is the correct range of value for the included angle of a V-belt?

a. 10º to 20º

b. 30º to 40º

c. 70º to 80º

d. 100º to 120º

Calculate the angular velocity of a body whose rotations per minute is 60.

a. 6 radians per second

b. 8 radians per second

c. 7.60 radians per second

d. 5.68 radians per second

The forces which meet at one point but whose lines of action lie on different points are known as ___________.

a. Co-planar concurrent forces

b. Co-planar non-concurrent forces

c. Non co-planar concurrent forces

d. Non co-planar non-concurrent forces

Which type of organization among the following has a straight flow of authority within a single unit?

a. Line organization

b. Functional organization

c. Line and staff organization

d. Line, staff and functional organization

What is the value of the point angle of a twist drill?

a. 118º

b. 150º

c. 106º

d. 100º

Two springs having stiffness 5 and 10 respectively are connected in series. Calculate the combined stiffness of the two springs.

a. 20/3

b. 30/4

c. 10/3

d. 15/2

What is the value of entropy of a substance at absolute zero temperature?

a. 0

b. 1

c. ∞

d. -1

The broaching operation in which the workpiece moves across the stationary tool is known as ___________.

a. surface broaching

b. continuous broaching

c. pull broaching

d. push broaching

Which of the following devices is used for atomizing and vaporizing the fuel before mixing it with air in varying proportions?

a. Spark plug

b. Carburetor

c. Flywheel

d. Governor

__________ is the angle made by the face of the tool and the parallel plane to the base of the cutting tool.

a. Lip angle

b. Rake angle

c. Side relief angle

d. End relief angle