3 phase motors Flashcards
A squirrel cage motor has
A) good start torque
B) poor start torque
A) good start torque (100%-275% of run torque)
A squirrel cage motor has
A) good run torque
B) poor run torque
A) good run torque
Can a squirrel cage motor be speed controlled
Yes. Good speed control and regulation
Does a squirrel cage motor require slip rings
No
How many terminal leads can a squirrel cage motor have
3,6,9, or 12
Is a squirrel cage more self starting
Yes
How is a squirrel cage motor started
Induction motor
A wound rotor motor has
A) excellent start torque
B) poor start torque
A) excellent start torque
A wound rotor motor has
A) excellent run torque
B) poor run torque
A) excellent run torque
Does a wound rotor motor have speed control
Yes. Has the best speed control and regulation
A synchronous motor has
A) good start torque
B) poor start torque
A) good start torque
Does a synchronous motor have speed control
No, constant speed under no load and full load
Does a synchronous motor have slip rings
Yes. 2 slip rings
How many terminal leads does a synchronous motor have
3,6,9, or 12
What does a synchronous motor
use to start
Armitasseur winding
