Machine Design MCQs

Question 1

Cold driven rivets range from

Accepted Answer

12 to 22 mm in diameter

Answer

6 to 10 mm in diameter

Answer

10 to 16 mm diameter

Answer

22 to 32 mm in diameter

Question 2

In an eccentric riveted connection, the rivets have to resist

Accepted Answer

Linear as well as rotary displacements

Answer

Linear displacement

Answer

Rotary displacement

Answer

Linear or rotary displacement

Question 3

The gross diameter of a rivet is the diameter of the

Accepted Answer

Rivet measured after driving

Answer

Cold rivet measured before driving

Answer

Rivet hole

Answer

Any one of the above

Question 4

Pick up the true statement from the following

Accepted Answer

The minimum pitch should not be less than 2.5 times the gross diameter of the rivet

Answer

The minimum pitch should not be less than 12 times the gross diameter of the rivet

Answer

The maximum pitch should not exceed 10 t or 150 mm whichever is less in compression

Answer

All of the above

Question 5

Efficiency of a riveted joint is the ratio between

Accepted Answer

The minimum of the three strengths of a joint to the strength of a pitch length of the solid plate

Answer

Tearing strength of the joint to the strength of a pitch length of the solid plate

Answer

Shearing strength of the joint to the strength of a pitch length of the solid plate

Answer

Bearing strength of the joint to the strength of a pitch length Of the solid plate

Question 6

According to I.B.R., the following type of joint is preferred for longitudinal joint

Accepted Answer

Butt joint

Answer

Lap

Answer

Welded joint

Answer

Any one of the above

Question 7

The of the boiler plate are bevelled to an angle of

Accepted Answer

800

Answer

450

Answer

600

Answer

720

Question 8

A riveted joint may fail due to

Accepted Answer

Any or all of the above reasons

Answer

Shearing of the rivet

Answer

Tearing off the plate at an edge

Answer

Crushing of the rivet

Question 9

According to I.B.R., the following type of joint is preferred for circumferential joint

Accepted Answer

Lap joint

Answer

Butt joint

Answer

Welded joint

Answer

Any one of the above