A 4 pole wave wound dc motor having flux per pole of 9.56 X 10-3 Wb contains 460 armature conductors with armature resistance of 0.6 ohm. Calculate the starting current flowing through the armature if the supply voltage is 240 volt.

Electrical Machines
A 4 pole wave wound dc motor having flux per pole of 9.56 X 10-3 Wb contains 460 armature conductors with armature resistance of 0.6 ohm. Calculate the starting current flowing through the armature if the supply voltage is 240 volt.

0.5 Amp.

320 Amp.

800 Amp.

400 Amp.

0.5 Amp.

320 Amp.

800 Amp.

400 Amp.

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Electrical Machines
A DC generator can be considered as

prime mover.

power pump.

rotating amplifier.

rectifier.

prime mover.

power pump.

rotating amplifier.

rectifier.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Autotransformer makes effective saving on copper and copper losses, when its transformation ratio is equal to

less than one.

greater than one.

approx to one.

very low

less than one.

greater than one.

approx to one.

very low

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Electrical Machines
With the increase in speed of DC motor

Back emf falls and line current increase.

Both back emf as well as line current increase.

Both back emf as well as line current fall.

Back emf increase but line current falls.

Back emf falls and line current increase.

Both back emf as well as line current increase.

Both back emf as well as line current fall.

Back emf increase but line current falls.

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Electrical Machines
The slip of an induction motor normally does not depend on which of the following?

Synchronous speed.

Core loss component.

Shaft torque.

Rotor speed.

Synchronous speed.

Core loss component.

Shaft torque.

Rotor speed.

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Electrical Machines
The demagnetising component of armature reaction in a DC generator

results in sparking trouble.

reduces generator emf.

increases armature speed.

reduces inter poles flux density.

results in sparking trouble.

reduces generator emf.

increases armature speed.

reduces inter poles flux density.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines

Electrical Machines A 4 pole wave wound dc motor having flux per pole of 9.56 X 10-3 Wb contains 460 armature conductors with armature resistance of 0.6 ohm. Calculate the starting current flowing through the armature if the supply voltage is 240 volt.

Electrical Machines A DC generator can be considered as

Electrical Machines Autotransformer makes effective saving on copper and copper losses, when its transformation ratio is equal to

Electrical Machines With the increase in speed of DC motor

Electrical Machines The slip of an induction motor normally does not depend on which of the following?

Electrical Machines The demagnetising component of armature reaction in a DC generator

Electrical Machines
A 4 pole wave wound dc motor having flux per pole of 9.56 X 10-3 Wb contains 460 armature conductors with armature resistance of 0.6 ohm. Calculate the starting current flowing through the armature if the supply voltage is 240 volt.

Electrical Machines
A DC generator can be considered as

Electrical Machines
Autotransformer makes effective saving on copper and copper losses, when its transformation ratio is equal to

Electrical Machines
With the increase in speed of DC motor

Electrical Machines
The slip of an induction motor normally does not depend on which of the following?

Electrical Machines
The demagnetising component of armature reaction in a DC generator