Test: Machine Design - 2 - Mechanical Engineering MCQ

The number of rivets in shear shall be equal to the number of rivets in crushing.

When bevel gears connect two shafts whose axes intersect at an angle greater than a right angle and one of the bevel gears has a pitch angle of 90�, then they are known as

The toughness of a material __________ when it is heated.

The number of slots in a 25 mm castle nut is

A screw is said to be over hauling screw, if its efficiency is

The application of third type levers is found in

For unequal width of butt straps, the thickness of butt straps are

A locking device in which the bottom cylindrical portion is recessed to receive the tip of the locking set screw, is called

Slenderness ratio is the ratio of

A crankshaft is a __________ shaft.

According to Indian standard specifications, 100 H6/g5 means that the

A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where σ = Stress for a plate with no hole i.e. nominal stress)

A column is known as a long column if the slenderness ratio is

The velocity of sliding __________ the distance of the point of contact from the pitch point.

Circumferential joint in boilers is used to get the required length of a boiler.

The ball bearings are provided with a cage

When screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be

In radial cams, the follower moves

The square threads are not so strong as V-threads but they offer less frictional resistance to motion than Whitworth threads.

According to Unwin's formula, the relation between the diameter of rivet hole (d) and the thickness of plate (t) is given by (where d and t are in mm)

The value of stress concentration factor depends upon

In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole)