Machine Design MCQs

Question 1

Which of the following cotter joint will be used to connect strap end of a connecting rod?

Accepted Answer

Gib and cotter joint

Answer

Spigot and socket cotter joint

Answer

Sleeve and cotter joint

Answer

Any one of these

Question 2

A key way lowers

Accepted Answer

Both the strength and rigidity of the shaft

Answer

The strength of the shaft

Answer

The rigidity of the shaft

Answer

The ductility of the shaft

Question 3

Which one of the following is a positive drive?

Accepted Answer

Chain drive

Answer

V-belt drive

Answer

Rope drive

Answer

Crossed flat belt drive

Question 4

A stud

Accepted Answer

Has both the ends threaded

Answer

Has a head on one end and a nut fitted to the other

Answer

Has head at one end and other end fits into a tapped hole in the other part to be joined

Answer

Has pointed threads

Question 5

A tap bolt

Accepted Answer

Has head at one end and other end fits into a tapped hole in the other part to be joined

Answer

Has a head on one end and a nut fitted to the other

Answer

Has both the ends threaded

Answer

Has pointed threads

Question 6

A woodruff key is

Accepted Answer

Capable of tilting in a recess milled out in the shaft

Answer

A tapered key with head at one end

Answer

Fitted in pairs at right angles

Answer

All of the above

Question 7

Machine screws are

Accepted Answer

Slotted for a screw driver and generally used with a nut

Answer

Similar to small size tap bolts except that a greater variety of shapes of heads are available

Answer

Used to prevent relative motion between two parts

Answer

Similar to stud

Question 8

The rolling contact bearings as compared to sliding contact bearings have

Accepted Answer

Small overall dimensions

Answer

Low starting and low running friction except at very high speeds

Answer

Accuracy of shaft alignment

Answer

All of the above

Question 9

For tight leakage joints, following type of thread is best suited

Accepted Answer

NPT (national pipe threads).

Answer

Metric

Answer

Buttress

Answer

Square