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Mechanical Engineering MCQs with Explanations

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1201Mechanical EngineeringMedium

The example of spherical pair is________?

Anone of the above

lead screw of a lathe

Cball and socket joint

Dball bearing and roller bearing

Ebolt and nut

Correct answer

C. ball and socket joint

Explanation

The correct answer is ball and socket joint.

1202Mechanical EngineeringMedium

From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the center of circular plate________?

A2.5 cm

B0.5 cm

C0.25 cm

D1.5 cm

E1.0 cm

Correct answer

B. 0.5 cm

Explanation

The correct answer is 0.5 cm.

1203Mechanical EngineeringMedium

Diesel fuel, compared to petrol is________?

Ajust about the same difficult to ignite

Bless difficult to ignite

Cnone of the above

Dmore difficult to ignite

Ehighly ignitable

Correct answer

D. more difficult to ignite

Explanation

The correct answer is more difficult to ignite.

1204Mechanical EngineeringMedium

In Vicker’s hardness testing, the pyramid indentor apex is________?

A161°.

B40°

C152°

D122°

E136°

Correct answer

E. 136°

Explanation

The correct answer is 136°.

1205Mechanical EngineeringMedium

The indicator using Watt mechanism is known as________?

AThomson indicator

BRichard indicator

Cnone of the above

DSimplex indicator

EThompson indicator

Correct answer

B. Richard indicator

Explanation

The correct answer is Richard indicator.

1206Mechanical EngineeringMedium

One time measurement unit (TMU) in method time measurement system equals________?

A0.0001 minute

B0.06 minute

C0.0006 minute

D0.001 minute

E0.006 minute

Correct answer

C. 0.0006 minute

Explanation

The correct answer is 0.0006 minute.

1207Mechanical EngineeringMedium

The evaporation of 15.653 kg of water per hour from and at 100°C is called________?

Afactor of evaporation

Bequivalent evaporation

Cone boiler h.p.

Dboiler efficiency

Eevaporative capacity

Correct answer

C. one boiler h.p.

Explanation

The correct answer is one boiler h.p..

1208Mechanical EngineeringMedium

Cast iron has________?

Ahigh tensile strength

Ball of the above

Chigh ductility

Dits elastic limit close to the ultimate breaking strength

Enone of the above

Correct answer

D. its elastic limit close to the ultimate breaking strength

Explanation

The correct answer is its elastic limit close to the ultimate breaking strength.

1209Mechanical EngineeringMedium

Constantant an alloy used in thermocouples is an alloy of ________?

Acopper and zinc

Bcopper and chromium

Ccopper and tin

Dcopper and nickel

Ecopper and iron

Correct answer

D. copper and nickel

Explanation

The correct answer is copper and nickel.

1210Mechanical EngineeringMedium

A riveted joint in which the number otrivets decrease from innermost to outer most row is called________?

Acriss-cross riveted joint

Bzig-zag riveted joint

Cchain riveted joint

Dnone of the above

Ediamond riveted joint

Correct answer

E. diamond riveted joint

Explanation

The correct answer is diamond riveted joint.

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