Machine Design MCQs

Question 1

Bushed pin flexible coupling is used to joint two shafts which

Accepted Answer

Are not in exact alignment

Answer

Have lateral misalignment

Answer

Whose axes intersect at a small angle

Answer

Is the simplest type of rigid coupling

Question 2

Permanent moving coil instruments are

Accepted Answer

D.C. type

Answer

A.C. type

Answer

Both A.C. and D.C. type

Answer

Could be A.C. or D.C.

Question 3

Moving iron instruments are

Accepted Answer

Both A.C. and D.C. type

Answer

A.C. type

Answer

D.C. type

Answer

Do not exist

Question 4

Shaft coupling is used in machinery to

Accepted Answer

All of the above

Answer

Alter the vibration characteristics of rotating unit

Answer

Introduce protection against fiver- loads

Answer

Introduce mechanical flexibility

Question 5

Compression formula is valid upto the slenderness ratio of

Accepted Answer

40

Answer

10

Answer

20

Answer

30

Question 6

Rankine's formula is valid upto the slenderness ratio of

Accepted Answer

120

Answer

60

Answer

180

Answer

240

Question 7

The buckling load depends on

Accepted Answer

All of the above

Answer

Cross-sectional area

Answer

Modulus of elasticity

Answer

Slenderness ratio

Question 8

Compression members tend to buckle in the direction of

Accepted Answer

Least radius of gyration

Answer

Minimum cross section

Answer

Axis of load

Answer

Perpendicular to axis of load

Question 9

If a car turns towards right, man sitting inside will move towards

Accepted Answer

Left

Answer

Right

Answer

Remain erect

Answer

Unpredictable