Test: Machine Design - 5 - Mechanical Engineering MCQ

The yield point in static loading is __________ as compared to fatigue loading.

A machine part subjected to __________ is called a strut.

When two helical springs of equal lengths are arranged to form a cluster spring, then

The stress in the threaded part of the bolt will be __________ as compared to the shank.

For a shaft diameter of 200 mm, the number of bolts in a marine flange coupling should be

A shaft is a rotating machine element.

The dedendum circle diameter is equal to (where φ = Pressure angle)

Two closely coiled helical springs with stiffnesses k₁ and k₂ respectively are connected in series. The stiffness of an equivalent spring is given by

Which one of the following is a positive drive?

The period during which the cam follower remains at rest, when cam moves, is known as

The flank of the tooth is the

The included angle for the British Association thread is

The contact ratio is the ratio of

The bearing characteristic number is given by (where p = Bearing pressure on the projected bearing area, Z = Absolute viscosity of the lubricant, and N = Speed of the journal)

The cracks in helical springs used in railway carriages usually start on the inner side of the coil because of the fact that

In a marine flange coupling, the thickness of flange is taken as

The wire ropes make contact at

A metal pipe of 1 m diameter contains a fluid having a pressure of 1 N/mm². If the permissible tensile stress in the metal is 20 N/mm², then the thickness of the metal required for making the pipe will be

When the speed of belt increases,

A tangent key is provided in pairs at right angles and each key is to withstand torsion in one direction only.

According to law of gearing, the common normal at the point of contact between a pair of teeth must always pass through the pitch point.

An involute pinion and gear are in mesh. If both have the same size of addendum, then there will be interference between the