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Electrical Machines
In dc machines, the armature windings are placed on the rotor because of the necessity for
development of torque
electromechanical energy conversion
generation of voltage
commutation
development of torque
electromechanical energy conversion
generation of voltage
commutation
Answer
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Related Question
Electrical Machines
If the field current is reduced to zero the maximum power developed by alternator is
5.46 KW.
0.9103 KW.
1.644 KW.
2.73 KW.
5.46 KW.
0.9103 KW.
1.644 KW.
2.73 KW.
Answer
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Electrical Machines
In a DC machine
current and emf at the terminals are alternating.
current and emf in armature are alternating.
current and emf in armature are unidirectional
emf in armature conductors and at the terminals is alternating.
current and emf at the terminals are alternating.
current and emf in armature are alternating.
current and emf in armature are unidirectional
emf in armature conductors and at the terminals is alternating.
Answer
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Electrical Machines
Select the motor that should not be started on no load?
Compound motor.
Shunt motor.
Series motor.
Brushless DC motor.
Compound motor.
Shunt motor.
Series motor.
Brushless DC motor.
Answer
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Electrical Machines
Crawling in an induction motor is due to
time harmonics in supply.
slip ring rotor.
space harmonics produced by winding currents.
insufficient starting torque.
time harmonics in supply.
slip ring rotor.
space harmonics produced by winding currents.
insufficient starting torque.
Answer
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Electrical Machines
Which of following DC generator will be in a position to build up without any residual magnetism in the field?
Compound.
Shunt.
Separately excited.
Series.
Compound.
Shunt.
Separately excited.
Series.
Answer
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