1. Pilot control devices are often employed to control the operation of a wound rotor induction motor.
a. True
b. False
2. Theoverloadrelayforawoundrotormotorcontainstwosetsofcontacts,bothnormallyclosed.​
a. True
b. False
3. Fourseparateleverspermitselectionofthemotor’soperatingspeed.​
a. True
b. False
4. If the motor is operating and a lower speed is selected, it immediately decreases to the lower speed without time
delay.​
a. True
b. False
5. ​Currenttransformerssensemotorcurrentandsupplycurrenttothe____.
a. ​floatswitches b. ​overloadheaters
c. ​speedcontrolcircuit d. ​contactors
Name: Class: Date:
Unit 37 Automatic Speed Control for Wound Rotor Motors
6. A(n)____indicateswhenpowerissuppliedtothecontrolcircuit.​
a. ​greenpilotlamp b. ​audiblealarm
c. ​flashingLED d. ​redwarninglamp
7. The normally closed set of the overload relay is connected in parallel with float switch EFS and will active the red
warning lamp and alarm in the event of ____.
a. ​ashort b. ​fallingwaterlevels
c. ​risingwaterlevels d. a motor overload
8. If the motor is operating at a low speed and a higher speed is selected, the motor immediately increases to the next
higherspeedifithasbeenoperatinginitspresentspeedformorethan____.​
a. ​3seconds b. ​30seconds
c. ​1minute d. ​3minutes
Name: Class: Date:
Unit 37 Automatic Speed Control for Wound Rotor Motors