# Mechanical Engineering - Machine Design

### Exercise :: Machine Design - Section 10

1.

Which of the following statement is correct?

 A. The distance from a point on one thread to the corresponding point on the next thread is called pitch B. The distance which a screw thread advances axially in one rotation of the nut is called lead C. In single start threads, lead is equal to pitch D. all of the above

Explanation:

No answer description available for this question. Let us discuss.

2.

The taper on cotter and slot is made on both the sides.

 A. Agree B. Disagree

Explanation:

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3.

Teflon is used for bearings because of

 A. low coefficient of friction B. better heat dissipation C. smaller space consideration D. all of these

Explanation:

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4.

In designing a flange coupling, the pitch circle diameter of bolts is taken as (where d = Diameter of the shaft)

 A. 2 d B. 3 d C. 4 d D. 5 d

Explanation:

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5.

The acme threads are usually found on

 A. spindles of bench vices B. railway carriage couplings C. feed mechanism of machine tools D. screw cutting lathes