Machine Design MCQ Questions & Answers

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Each section contains 100 MCQs on Machine Design .

The connecting rod bolts are tightened up with initial tension greater than the external load so that

A) Joint may not open up B) Bolts are weakest elements C) The resultant load on the bolt would not be affected by the external cyclic load D) Bolts will not loosen during service

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

In order to withstand resistance to wear, the best profile of gear is

A) $$14{\frac{1}{2}^ \circ }$$ full depth involute tooth B) 20° full depth involute tooth C) 20° involute stub tooth D) $$14{\frac{1}{2}^ \circ }$$ stub tooth

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

In hydrostatic bearings

A) The Oil film pressure is generated only by the rotation of the journal B) The oil film is maintained by supplying oil under pressure C) Do not require external supply of lubricant D) Grease is used for lubrication

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

In the levers of third type, the mechanical advantage is __________ one.

A) Less than B) Equal to C) More than D) None of these

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Cast iron pipes are mainly used

A) For conveying steam B) In water and sewage systems C) In pressure lubrication systems on prime movers D) All of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

A machine part subjected to _________ is called a strut.

A) An axial compressive force B) A tangential force C) An axial tensile force D) Any one of these

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which of the following pipe joints would be suitable for pipes carrying steam?

A) Flanged B) Threaded C) Bell and spigot D) Expansion

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

The expression 0.175 - 0.841/T is the Lewis form factor for

A) $$14{\frac{1}{2}^ \circ }$$ composite and full depth involute system B) 20° full depth involute system C) 20° stub system D) None of the above

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

In worm gears, the pressure angle is __________ the angle between two inclined faces in axial plane.

A) Half B) Twice C) Thrice D) None of these

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The ultimate strength of steel in tension in comparison to shear is in the ratio of

A) 1 : 1 B) 2 : 1 C) 3 : 2 D) 2 : 3

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

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Machine Design MCQ Questions & Answers | Mechanical Engineering