Electrical Machines Induction Motor Phasor Diagram Online Exam Quiz
Electrical Machines Induction Motor Phasor Diagram GK Quiz. Question and Answers related to Electrical Machines Induction Motor Phasor Diagram. MCQ (Multiple Choice Questions with answers about Electrical Machines Induction Motor Phasor Diagram
If the voltage of a three phase induction motor if increased to 200%, then the slip if the machine changes to _________
Options
A : 1/s
B : s
C : 1/2s
D : 2*s
If the frequency is reduced by 50% for a 3-phase, 50 Hz induction motor having 4 poles. The slip at which the maximum torque occurs becomes _________
Options
A : 2*s
B : s
C : 1/2s
D : 1/s
If the voltage and frequency of the induction machine is reduced to 50% of the operating region,the slip of the machine will be?
Options
A : 2*s
B : s
C : 1/2s
D : 1/s
If the operating voltage of the induction motor is increased by twice while keeping the frequency of the operation constant. Then the new starting torque will be?
Options
A : 4*T
B : 1/4*T
C : T
D : 2*T
A 400, 3-phase, 50 Hz, 4 pole induction motor takes a line current of 10 A with 0.86 pf lagging. What is the stator input?
Options
A : 5.95 kW
B : 6.95 kW
C : 4.45 kW
D : 8.38 kW
The power input to the 3-phase induction motor is 60 kW. The stator losses total 1 kW. Find the mechanical power developed at the slip of 3%.
Options
A : 57.23 kW
B : 58 kW
C : 56.8 kW
D : 59 kW
The rotor of the slip ring induction motor is connected to an ac source and stator is short circuited. If the rotating magnetic field is rotates clockwise, the rotor rotates in _________
Options
A : anticlockwise
B : clockwise
C : remains stationary
D : any of the mentioned
On increasing the starting torque of the induction motor, the maximum torque is also increased.
Options
A : False
B : True
C :
D :
If the hysteresis is neglected in the induction machine, then the the air gap flux _______ the resultant mmf.
Options
A : is in phase with
B : lags
C : leads by a small angle
D : can not decide the nature of the operation
An induction motor X operating at the slip of 3%. An induction motor Y operating at slip of 40%.
Options
A : Machine X is only stable
B : Machine Y is only stable
C : Both the machine X and Y are stable
D : Neither X nor Y is stable
Electrical Machines Action Commutator more Online Exam Quiz
Electrical Machines Excitation Method
Electrical Machines Experienced
Electrical Machines Ideal Two Winding Transformer
Electrical Machines Induction Generator
Electrical Machines Induction Motor Transformer
Electrical Machines Interview Experienced