Test: Machine Design - 4 - Mechanical Engineering MCQ

A pressure vessel is said to be a thin shell, if the ratio of wall thickness to its diameter is equal to 1/10.

A bolt of uniform strength can be developed by

The ratio of endurance limit in shear to the endurance limit in flexure is

The lower deviation is the algebraic difference between the

When plates are fastened by a rivet, the holes in the plates should be made by punching and reaming.

When carbon in the cast iron is principally in the form of graphite, the cast iron will be of

A shoe brake is commonly used in railway trains.

The rivet head used for boiler plate riveting is usually

A single strap butt joint is always in __________ shear.

18/8 steel contains

The module in the reciprocal of diametral pitch.

The velocity factor for carefully cut gears operating at velocities upto __________ is equal to 4.5/4.5 + v.

A localised compressive stress at the area of contact between two members is known as

The metal suitable for bearings subjected to heavy loads is

The V-belts are particularly suitable for __________ drives.

For hardening alloy steels and high speed steels, they are heated to

An universal coupling is used to connect two shafts

Euler's formula for a mild steel column is not valid if the slenderness ratio is

The standard length of the shaft is

According to I.B.R., when the thickness of boiler shell (t) is greater than 8 mm, then the diameter of rivet hole (d) is obtained by

A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as

When the shaft rotates in anticlockwise direction at slow speed in a bearing, it will