EE MCQ
EE MCQ
Home
Quiz
Contact Us
Electrical Machines
A DC Motor is driving a constant load torque having armature resistance of 0.25 Ω and armature current of 60 A having connected to a voltage of 230 V. Now a resistance of 1 ohm is added into the armature circuit. The ratio of their speed will be
0.25.
1.24.
0.62.
0.72.
0.25.
1.24.
0.62.
0.72.
Answer
Download EE MCQ app
Related Question
Electrical Machines
A DC generator can be considered as
prime mover.
rectifier.
power pump.
rotating amplifier.
prime mover.
rectifier.
power pump.
rotating amplifier.
Answer
Download EE MCQ app
Electrical Machines
When the excitation of normally operating unloaded, salient pole synchronous motor suddenly gets disconnected, it continues to run as a
DC motor.
induction motor.
variable reluctance motor.
switched reluctance motor.
DC motor.
induction motor.
variable reluctance motor.
switched reluctance motor.
Answer
Download EE MCQ app
Electrical Machines
In a star - delta starting of an IM
reduced voltage is applied to the stator.
applied voltage per stator phase is 57.7 % of a line volt
resistance is inserted in the rotor.
line voltage is 57.7 % of stator voltage.
reduced voltage is applied to the stator.
applied voltage per stator phase is 57.7 % of a line volt
resistance is inserted in the rotor.
line voltage is 57.7 % of stator voltage.
Answer
Download EE MCQ app
Electrical Machines
In which of the following DC Motor the ratio of starting torque to full load torque is minimum?
Cumulative compound motor.
Differential compound motor.
Shunt motor.
Series motor.
Cumulative compound motor.
Differential compound motor.
Shunt motor.
Series motor.
Answer
Download EE MCQ app
Electrical Machines
A part an alternator winding consist of eight coils in series, each having an emf of 20 V rms induced in it. Coils are placed in successive slots and between each slot and the next, there is an electrical phase displacement of 30°. Find the emf of eight coils in series
86.91 V.
56.91 V.
66.91 V.
76.91 V.
86.91 V.
56.91 V.
66.91 V.
76.91 V.
Answer
Download EE MCQ app
Search
Login here
Google
Download our application
Android
Apple
Follow Us
Facebook
Telegram
Instagram