Deck 19: Control Circuits

Question 1

A(n) ____________________ timer uses air to provide a time delay.

Answer 1

pneumatic

Question 2

Why have electronic timers become popular?

Answer 2

Electronic timers have become very popular because they are inexpensive and have good reliability and repeat accuracy.

Question 3

If the switch is closed, there is no complete path for current flow, and the motor will not operate.

Answer 3

False

Question 4

Interlocking is used to prevent some function from happening until some other function or action has occurred.

Question 5

Dashpot timers use a(n) ____________________ moving through oil to create a time delay.

Question 6

Inching applies full voltage to the motor and jogging applies reduced voltage to the motor.

Question 7

The on-delay timer is often referred to on a schematic as DODE.

Question 8

____________________ is moving a machine with short jabs of power.

Question 9

A normally open time-operated contact is connected in series with a pilot light.

Question 10

What are the two basic types of control circuits?

Question 11

A(n) ____________________ is used to represent how the circuit generally appears.

Question 12

Schematics and wiring diagrams are the written language of ____________________.

Question 13

Describe how an on-delay timer functions.

Question 14

Describe how a pneumatic timer works.

Question 15

Describe how an off-delay timer functions.