Exam 2: Mechanical Engineering Shafts, Belts, Gears, and Governors

The engine of an aeroplane rotates in a clockwise direction when seen from the tail end and the aeroplane takes a turn torwards left. The effect of gyroscopic couple on aeroplane is

In Iocomotive operation, the swaying couple results due to

If a machine uses four V belts, while purchasing care should be taken to ensure that

A shaft having one end fixed has a disc oscillating freely at the other end. If the shaft stiffness, increases the natural frequency of vibrations will

For speed reduction in the ratio of 100 the type of gear preferred is

A belt drive is

Which of the following is a higher pair?

The type of governor used in record players for adjusting the speed of turn table generally is

In case of involute gears

A cycle chain is a kinematic chain

The moment of friction with the assumption of uniform wear to uniform pressure is

The maximum efficiency of a screw jack provided with square threads and angle of friction 30? will be

Hammer blow in locomotives results in

The rotor of a ship rotates in anticlock wise direction when viewed from the bow end and the ship takes a left turn. The effect of gyroscopic couple on the ship is

Klien's construction gives graphical construction for

Which of the following oil has highest specific gravity?

In case of gears, the module is

A kinematic chain must have at least

If a particle of a link has a velocity when changes both in magnitude and direction at any instant, then

The vibrations in which the restoring forces are not proportional to the displacements and the first power of velocity are known as