In dc machines, the field system has to be provided on stator unlike synchronous machines Where in it could be on any member, because

Electrical Machines
In dc machines, the field system has to be provided on stator unlike synchronous machines Where in it could be on any member, because

it gives more uniform air-gap flux distribution

dc machines are comparatively low rating machines.

it reduces field structure iron losses

commutator action is not possible otherwise

it gives more uniform air-gap flux distribution

dc machines are comparatively low rating machines.

it reduces field structure iron losses

commutator action is not possible otherwise

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Electrical Machines
Total core loss is also called as -------------?

Eddy current loss

Copper loss

Hysteresis loss

Magnetic loss

Eddy current loss

Copper loss

Hysteresis loss

Magnetic loss

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Electrical Machines
In DC generators, the residual magnetism is of the order of

10 %.

2.5 %.

15 %.

20 %.

10 %.

2.5 %.

15 %.

20 %.

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Electrical Machines
Shunt field of DC generators consists of--------number of turns and ---------- conductors respectively

large and thin

large and thick

less and thick

less and thin

large and thin

large and thick

less and thick

less and thin

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Electrical Machines
Which of the following motor is not suitable for frequent starting and stopping?

Capacitor split phase motor

Capacitor run motor

All of these

Resistance split phase motor

Capacitor split phase motor

Capacitor run motor

All of these

Resistance split phase motor

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Electrical Machines
In induction motor wound rotor motor is mainly is used in application where

power factor is less.

low starting torque.

high starting torque.

less costly motor is not required.

power factor is less.

low starting torque.

high starting torque.

less costly motor is not required.

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Electrical Machines

Electrical Machines In dc machines, the field system has to be provided on stator unlike synchronous machines Where in it could be on any member, because

Electrical Machines Total core loss is also called as -------------?

Electrical Machines In DC generators, the residual magnetism is of the order of

Electrical Machines Shunt field of DC generators consists of--------number of turns and ---------- conductors respectively

Electrical Machines Which of the following motor is not suitable for frequent starting and stopping?

Electrical Machines In induction motor wound rotor motor is mainly is used in application where

Electrical Machines
In dc machines, the field system has to be provided on stator unlike synchronous machines Where in it could be on any member, because

Electrical Machines
Total core loss is also called as -------------?

Electrical Machines
In DC generators, the residual magnetism is of the order of

Electrical Machines
Shunt field of DC generators consists of--------number of turns and ---------- conductors respectively

Electrical Machines
Which of the following motor is not suitable for frequent starting and stopping?

Electrical Machines
In induction motor wound rotor motor is mainly is used in application where