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Electrical Machines
Brushes are always placed on--------------- , in order to achieve sparkles commutation?
None of these
GNA
MNA
either GNA or MNA
None of these
GNA
MNA
either GNA or MNA
Answer
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Related Question
Electrical Machines
Which of the following is the largest conversion device?
Synchronous machine
Induction machine
DC machine
All of these
Synchronous machine
Induction machine
DC machine
All of these
Answer
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Electrical Machines
Which of following DC motors will have percentage increase of input current for the same percentage increase in torque?
Cummulative compound.
Series.
Shunt.
Differntical compound.
Cummulative compound.
Series.
Shunt.
Differntical compound.
Answer
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Electrical Machines
A 3 - Φ, 4 pole IM is supplied from a 50 Hz source. Calculate rotor frequency when rotor runs 600 rpm?
35 Hz.
20 Hz.
Can be determined.
30 Hz.
35 Hz.
20 Hz.
Can be determined.
30 Hz.
Answer
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Electrical Machines
Which type motors are preferred for lathes?
Synchronous motor.
DC shunt motors.
Squirrel Cage induction motor.
Either A or B.
Synchronous motor.
DC shunt motors.
Squirrel Cage induction motor.
Either A or B.
Answer
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Electrical Machines
Slip rings of an induction motors are made of
stainless steel.
aluminium.
phosphor bronze.
carbon.
stainless steel.
aluminium.
phosphor bronze.
carbon.
Answer
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