Deck 33: Four-Speed Two-Winding 28consequent Pole29 Motor Controller

Question 1

A decelerating relay is similar in action to a(n) relay.

A)compelling
B)reversal
C)time
D)accelerating

Answer 1

D

Question 2

Compelling relays ensure that the motor starts at the lowest speed.

Answer 2

True

Question 3

In a standard starter, before change is made from a higher to a lower speed, .

A)the overload relay must be reset
B)the contacts must be reclosed
C)the stop button must be pressed
D)the motor must be reversed

Answer 3

C

Question 4

With a compelling relay, the motor is started at low speed and is then accelerated automatically through successive speed steps until the selected speed is reached.

Question 5

With an accelerating relay, the motor can be started only by pressing the low-speed push button.

Question 6

Multispeed starters are provided with mechanical and electrical interlocking.

Question 7

When the starter is equipped with an accelerating relay, .

A)the motor can be started only by pressing the low-speed push button
B)the motor must be started at low speed before a higher speed can be selected
C)the motor is started at low speed and is then accelerated manually
D)the final speed is determined by the button pressed

Question 8

Mechanical and electrical interlocking avoid the possibility of .

A)connecting more than one speed winding at the same time
B)overusing the line
C)connecting more than two speed windings at the same time
D)disconnecting the line

Question 9

When a compelling relay is used, .

A)the final speed is determined by the button pressed
B)the motor must be started at low speed before a higher speed can be selected
C)the motor is started at low speed and is then accelerated automatically
D)definite time intervals must elapse between each speed change

Question 10

Four-speed, consequent pole, squirrel cage motors have two reconnectable windings and two speeds for each winding.