Mechanical Engineering - Theory of machines

1. 

When the crank is at the outer dead centre, in a reciprocating steam engine, then the acceleration of the piston will be

A.
B.
C.
D.

Answer: Option B

Explanation:

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2. 

The size of a gear is usually specified by

A. pressure angle
B. circular pitch
C. diametral pitch
D. pitch circle diameter

Answer: Option D

Explanation:

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3. 

The example of successfully constrained motion is a

A. motion of an I.C. engine valve
B. motion of the shaft between a foot-step bearing
C. piston reciprocating inside an engine cylinder
D. all of the above

Answer: Option D

Explanation:

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4. 

The angle which the normal reaction makes with the resultant reaction is called angle of friction.

A. Agree
B. Disagree

Answer: Option A

Explanation:

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5. 

Which one of the following can completely balance several masses revolving in different planes on a shaft?

A. A single mass in different planes
B. Two masses in any two planes
C. A single mass in one of the planes of the revolving masses
D. Two equal masses in any two planes

Answer: Option B

Explanation:

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