Electrical Machines Interview Freshers Online Exam Quiz
Electrical Machines Interview Freshers GK Quiz. Question and Answers related to Electrical Machines Interview Freshers. MCQ (Multiple Choice Questions with answers about Electrical Machines Interview Freshers
Damper windings are made of ___________
Options
A : copper
B : iron
C : silicon
D : cast iron
Using a _____ can be used to limit hunting.
Options
A : Flywheel
B : DC Exciter
C : Large load
D : Any of the mentioned
Damper winding should have ___________
Options
A : high resistance
B : low starting torque
C : low resistance
D : low reactance
When the rotor speed becomes greater than synchronous speed, which type of torque is produced in damper winding?
Options
A : Induction generator
B : Synchronous generator
C : Reluctance motor
D : Induction motor
When an alternator is loaded suddenly the torque produced in damper is?
Options
A : Induction motor
B : Induction generator
C : Synchronous motor
D : Synchronous generator
The relative speed between rotor and stator field is zero. This means ___________
Options
A : mechanical speed of rotor is equal to stator field speed
B : mechanical speed is zero
C : stator field is stationary
D : none of the mentioned
The satisfactory operation of the synchronous machine means ___________
Options
A : mechanical speed of rotor is equal to stator field speed
B : mechanical speed is zero
C : stator field is stationary
D : none of the mentioned
Effects of hunting are/is ___________
Options
A : mechanical stress
B : surge in current
C : rise in temperature
D : all of the mentioned
The damper winding are placed in ___________
Options
A : pole shoes
B : series with armature
C : series with field
D : rotor slots
Turbo generators do not use damper winding due to ___________
Options
A : solid steel rotor core
B : laminated armature
C : soft iron core
D : small current flow in pole shoes
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