1. List basic types of power transmission devices and explain it in brief

Ans:

Belt drive (belt and pulley) - Torque transfer takes place due to friction between pulley and belt.
Chain drive (Chain and sprockets) - Used for power transmission at a greater distance and is more efficient than belt drive.
Gear drive (Gears) - Used for power transmission at a shorter distance.

2.Which among belt, chain and gear drive is most efficient and which is least efficient?

Ans:

Gear drive is most efficient while belt drive id least efficient

3.One basic difference between bevel gear and miter gear

Ans:

Bevel gears are gears designed to transmit motion between intersecting axes. And two equal (1:1 velocity ratio) bevel gears at 90° form miter gear

4. What is rack and pinion used for?

Ans:

Rack and pinion is to convert rotational motion into linear motion and vice-versa.

5. List some applications of bevel gear

Ans:

: Differential gearbox in automobile, sugar crushing machine, hand drill, printing press, cooling towers, locomotives, railway track inspection machine, etc.

6. Define factor of safety?

Ans:

The ratio between maximum stresses to working stress is known as factor of safety. Factor of safety = Maximum stress /Working stress