Machine Design MCQ Questions & Answers

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Each section contains 100 MCQs on Machine Design .

Rankine's theory of failure is applicable for following type of materials

A) Brittle B) Ductile C) Elastic D) Plastic

Discuss

Answer & Solution

Answer: Option A

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

The velocity factor for very accurately cut and ground metallic gears operating at velocities upto __________ are equal to $$\frac{6}{{6 + {\text{v}}}}$$ .

A) 10 m/s B) 12.5 m/s C) 15 m/s D) 20 m/s

Discuss

Answer & Solution

Answer: Option D

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

Lewis equation is applied

A) Only to the pinion B) Only to the gear C) To stronger of the pinion or gear D) To weaker of the pinion or gear

Discuss

Answer & Solution

Answer: Option D

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

In a hydrodynamic lubricated bearing

A) There is a thick film of lubricant between the journal and the bearing B) There is a thin film of lubricant between the journal and the bearing C) The lubricant is forced between the journal and the bearing, by external pressure D) There is no lubricant between the journal and the bearing

Discuss

Answer & Solution

Answer: Option A

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

Idler pulley is used for

A) Increasing velocity ratio B) For applying tension C) Changing the direction of motion of belt D) All of these

Discuss

Answer & Solution

Answer: Option B

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

If p = bearing pressure on projected bearing area, Z = absolute viscosity of lubricant and N = speed of journal, then the bearing characteristic number is given by

A) $$\frac{{{\text{ZN}}}}{{\text{p}}}$$ B) $$\frac{{\text{p}}}{{{\text{ZN}}}}$$ C) $$\frac{{\text{Z}}}{{{\text{pN}}}}$$ D) $$\frac{{\text{N}}}{{{\text{Zp}}}}$$

Discuss

Answer & Solution

Answer: Option A

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

The suitable material for belt in agricultural machinery is

A) Leather B) Rubber C) Cotton duck D) Balata gum

Discuss

Answer & Solution

Answer: Option B

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

Which process will increase the fatigue duration of parts?

A) Finishing and polishing B) Shot-peening C) De-carburisation D) Electroplating

Discuss

Answer & Solution

Answer: Option B

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

Coaxing is the procedure of increasing

A) Metal strength by cycling B) Metal hardness by surface treatment C) Metal resistance to corrosion by coating D) Fatigue limit by over-stressing the metal by successively increasing loadings

Discuss

Answer & Solution

Answer: Option D

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

In a flange coupling, the keys are staggered at __________ along the circumference of the shafts in order to divide the weakening effect caused by key ways.

A) 90° B) 135° C) 160° D) 180°

Discuss

Answer & Solution

Answer: Option A

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

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Machine Design MCQ Questions & Answers | Mechanical Engineering