Test: Machine Design - 1 - Mechanical Engineering MCQ

Which of the following statement is wrong ?

In a flange coupling, the thickness of flanges is taken as one-half the diameter of shaft.

The rolling contact bearings are known as

The backlash for spur gears depends upon

The size of a gear is usually specified by

The circumferential and longitudinal strains in a cylindrical boiler under internal steam pressure are ε_c and ε_l respectively. The change in volume of the boiler cylinder per unit volume will be

The bearings of heavy series have capacity __________ over the medium series.

A steel containing more than 0.8% carbon is known as eutectoid steel.

In leaf springs, the longest leaf is known as

The taper on cotter varies from

When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be __________ the bearing modulus.

Which of the following screw thread is used for power transmission in one direction only.

The rolling contact bearings as compared to sliding contact bearings have

When two non-intersecting and non-coplaner shafts are connected by gears, the arrangement is known as

When a nut is tightened by placing a washer below it, the bolt will be subjected to

The maximum normal stress theory is used for

A locking device extensively used in marine type connecting rod ends is a

The difference between the tooth space and the tooth thickness as measured on the pitch circle, is called

When a load W is suddenly applied to a bar of weight W₁, the stress induced in the bar will increase with the increase in weight W₁.

The endurance limit for a mirror polished material will be __________ as compared to unpolished material.

A sliding bearing which operates without any lubricant present, is called

The material used for brake lining should have __________ coefficient of friction.