Clutches And Brakes

Question 1

Used to connect a prime mover to a load in a manner that allows the torque transmission to be interrupted

Answer 1

Clutches

Question 2

The most common form of engagement for clutches and brakes

Answer 2

Friction

Question 3

Transmission of torque can take place using these types of actuation processes:

Answer 3

electromagnetism, mechanical lock up, pneumatic, hydraulic

Question 4

Types of variable slip or soft engagement electromagnetic designs

Answer 4

Eddy current, magnetic particle, hysteresis.

Question 5

If you have large particles in a magnetic brake what happens to speed/torque

Answer 5

Speed (rpm) goes down, and the torque (capacity) goes up

Question 6

If your have small particles your speed and torque do what?

Answer 6

Speed (rpm) goes up and torque (capacity) goes down.

Question 7

If you need more engagement in magnetic brakes you increase what?

Answer 7

Current

Question 8

Eddy current brakes/clutches are energized by?

Answer 8

DC current on a coil

Question 9

Direct mechanical connection between input and output members

Answer 9

Mechanical lockup interface

Question 10

Types of jaw clutches

Answer 10

Square, spiral

Question 11

A refined version of the jaw clutch using mechanical lock up and smaller teeth.

Answer 11

Multiple tooth clutch

Question 12

Wrap spring, sprag, ramp and roller and spiral jaw all uni or bi directional?

Answer 12

Unidirectional

Question 13

wrap-spring, ramp and roller, sprag and centrifugal clutches are all what type of clutches?

Answer 13

Self-actuating

Question 14

A type of clutch that engages harder the faster it spins

Answer 14

Certifugal

Question 15

The main problem with friction style brakes and clutches?

Answer 15

Heat generated vs heat dissipated