AMP Chapter 12

Question 1

purpose of clutch?

Answer 1

Clutch controls the amount of torque transmitted to wheels.

Question 2

Internal Gear difference?

Answer 2

same as spur gear but no reversal in direction

Question 3

Gears are generally used for one of following reasons

Answer 3

To reverse / change the direction of rotation or axis of rotation.
To increase or decrease the speed of rotation / Torque transmitted.
To move rotational motion to a different axis
To keep the rotation of two axes synchronized
The torque to be transmitted is high

Question 4

3 advantages of gear having teeth?

Answer 4

Most gears have teeth. The teeth have three advantages:
Prevent slippage between the gears. Hence speeds synchronized.
Exact speed ratios can be determined.
Even if diameters are a bit off, number of teeth only matters

Question 5

Spur Gear?

Answer 5

Spur Gears used when axes of rotation are parallel. 
 Teeth parallel to shaft 
 Can achieve ratios of 10:1 
 For higher ratios more stages 
 Energy flow bidirectional 
 Low cost 
 Smaller one is called pinion 
 Reversal in direction of rotation 
 Can increase / reduce speed