Machine Design MCQs

Question 1

Oldham's coupling is used to connect two shafts which

Accepted Answer

Have lateral misalignment

Answer

Whose axes intersect at a small angle

Answer

Are not is exact alignment

Answer

Is the simplest type of rigid coupling

Question 2

For two parallel shafts, the distance between whose axes is small and variable, which coupling will you use?

Accepted Answer

Oldham's coupling

Answer

Hydraulic coupling

Answer

Universal joint

Answer

Flange coupling

Question 3

In the flange coupling the two flanges are coupled together by means of bolts fitted in

Accepted Answer

Reamed holes

Answer

Machined holes

Answer

Threaded holes

Answer

Gasketed holes

Question 4

The holes in the flange coupling for coupling the two flanges together by bolts are reamed because it permits

Accepted Answer

Equal sharing of load by bolts

Answer

Avoidance of stress concentration

Answer

Avoidance of any injury during dismantling

Answer

Less wear, tear and vibrations

Question 5

Following type of pipe joint is mostly used for pipes carrying water at low pressures

Accepted Answer

Socket

Answer

Nipple

Answer

Union

Answer

Spigot and socket

Question 6

The sleeve or muff coupling is designed as a

Accepted Answer

Hollow shaft

Answer

Thin vessel

Answer

Thick vessel

Answer

Solid shaft

Question 7

Muff coupling is used to join two shafts which

Accepted Answer

Is the simplest type of rigid coupling

Answer

Have lateral misalignment

Answer

Whose axes intersect at a small angle

Answer

Are not in exact alignment

Question 8

Keys are normally made from

Accepted Answer

Cold rolled mild steel bars

Answer

Forged steel

Answer

Hot rolled mild steel bars

Answer

Cold rolled carbon steel

Question 9

The most important dimension in the design of nut is

Accepted Answer

Height

Answer

Outside dimensions of nut

Answer

Inside diameter

Answer

Pitch diameter