Question

1 multiple choice 1 point
an automatic clutch is controlled by _.
spring pressure
hydraulic pressure
a driver - operated lever
centrifugal force according to engine load and speed
2 multiple choice 1 point
the ring and pinion gears of a shaft drive motorcycle turn the output rotation through a(n) _ degree angle.
30
45
90
180
3 true or false 1 point
gear reduction occurs when a larger gear drives a smaller gear.
true
false

Explanation:

1. An automatic clutch uses centrifugal force which is related to engine load and speed. Spring pressure is for manual clutches in some cases, hydraulic pressure is for hydraulic - operated systems (not automatic clutch in this context), and a driver - operated lever is for manual clutches.
2. Ring and pinion gears (bevel gears) change the direction of rotation by 90 degrees.
3. Gear reduction occurs when a smaller gear drives a larger gear. When a larger gear drives a smaller gear, it is gear multiplication (higher speed, lower torque).

Answer:

1. centrifugal force according to engine load and speed
2. 90
3. False