MCQs

Mechanical Engineering MCQs with Explanations

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1351Mechanical EngineeringMedium

Micromotion study involves following number of fundamental hand motions________?

A16

C12

D24

E20

Correct answer

A. 16

Explanation

The correct answer is 16.

1352Mechanical EngineeringMedium

In S.H.M., acceleration is proportional to ________?

Aall of the above

Bnone of the above

Cvelocity

Ddisplacement

Erate of change of velocity

Correct answer

D. displacement

Explanation

The correct answer is displacement.

1353Mechanical EngineeringMedium

The knocking in diesel engines for given fuel, will be________?

Adependent on other factors

Benhanced by decreasing compression ratio

Cfirst enhanced by increasig compression ratio upto a limit beyond which it will be suppressed

Dunaflected by compression ratio

Eenhanced by increasing compression ratio

Correct answer

B. enhanced by decreasing compression ratio

Explanation

The correct answer is enhanced by decreasing compression ratio.

1354Mechanical EngineeringMedium

The possible loading in various members of framed structures are________?

Abending

Bbuckling or shear

Call of the above

Dshear or tension

Ecompression or tension

Correct answer

E. compression or tension

Explanation

The correct answer is compression or tension.

1355Mechanical EngineeringMedium

In a centrifugal pump casing, the flow of water leaving the________?

Aradial

Bvortex

Crectilinear

Dcentrifugal

Correct answer

B. vortex

Explanation

The correct answer is vortex.

1356Mechanical EngineeringMedium

Which of the following disciplines provides study of inertia forces arising from the combined effect of the mass and the motion of the parts________?

Akinetics

Bmechanisms

Capplied mechanics

Dkinematics

Etheory of machines

Correct answer

A. kinetics

Explanation

The correct answer is kinetics.

1357Mechanical EngineeringMedium

The behaviour of gases can be fully determined by________?

A4 laws

B1 law

C2 laws

D3 laws

Correct answer

A. 4 laws

Explanation

The correct answer is 4 laws.

1358Mechanical EngineeringMedium

Allen bolts are________?

Adesigned for shock load

Bused in aircraft application

Cprovided with hexagonal depression in head

Duniform strength bolts

Eself locking bolts

Correct answer

C. provided with hexagonal depression in head

Explanation

The correct answer is provided with hexagonal depression in head.

1359Mechanical EngineeringMedium

Three different weights fall from a certain height under vacuum. They will take________?

Atimes proportional to weight to reach earth

Bnone of the above

Cunpredictable

Dsame time to reach earth

Etimes inversely proportional to weight to reach earth

Correct answer

D. same time to reach earth

Explanation

The correct answer is same time to reach earth.

1360Mechanical EngineeringMedium

Scavenging air is supplied to a two-stroke engine at a density greater than that of atmosphere. This means the engine is________?

ACharged

BNot supercharged

CSupercharged

DSupercharged provided its speed is low

Correct answer

B. Not supercharged

Explanation

The correct answer is Not supercharged.

The knocking in diesel engines for given fuel, will be________?

Adependent on other factors

Benhanced by decreasing compression ratio

Cfirst enhanced by increasig compression ratio upto a limit beyond which it will be suppressed

Dunaflected by compression ratio

Eenhanced by increasing compression ratio

Correct answer

B. enhanced by decreasing compression ratio

Explanation

The correct answer is enhanced by decreasing compression ratio.