A series generator is connected in series to a feeder having 0.5Ω resistance to boost the voltage. The induced voltage is given by Eg = 0.6Ia, Ra = 0.2Ω and Rs = 0.3Ω. Find the voltage boosted by the generator, when delivering 400 Amp?

Electrical Machines
A series generator is connected in series to a feeder having 0.5Ω resistance to boost the voltage. The induced voltage is given by Eg = 0.6Ia, Ra = 0.2Ω and Rs = 0.3Ω. Find the voltage boosted by the generator, when delivering 400 Amp?

40 V.

90 V.

30 V.

60 V.

40 V.

90 V.

30 V.

60 V.

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Electrical Machines
Which of the following is/are the methods to reduce the armature reaction and its effects?

All of these

pole chamfering

compensating winding

pole stacking

All of these

pole chamfering

compensating winding

pole stacking

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Electrical Machines
The dc motor which can provide zero speed regulation at full load without any controller, is

differential compound.

cumulative compound.

series.

shunt.

differential compound.

cumulative compound.

series.

shunt.

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Electrical Machines
A separately excited DC motor has an armature resistance of 0.5 Ohm. The supply voltage is 250V. Armature current is 20A and the speed of rotation is 1500 rpm. Find the torque developed?

16.55 Nm

Zero

15.28 Nm

15.6 Nm

16.55 Nm

Zero

15.28 Nm

15.6 Nm

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Electrical Machines
If the temperature of armature resistance is increased, the speed of a series motor would

None of above.

not change.

decrease.

increase.

None of above.

not change.

decrease.

increase.

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Electrical Machines
Example of double excited machine is

Both are correct.

None of these

DC Shunt Motor

Synchronous motor.

Both are correct.

None of these

DC Shunt Motor

Synchronous motor.

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Electrical Machines

Electrical Machines A series generator is connected in series to a feeder having 0.5Ω resistance to boost the voltage. The induced voltage is given by Eg = 0.6Ia, Ra = 0.2Ω and Rs = 0.3Ω. Find the voltage boosted by the generator, when delivering 400 Amp?

Electrical Machines Which of the following is/are the methods to reduce the armature reaction and its effects?

Electrical Machines The dc motor which can provide zero speed regulation at full load without any controller, is

Electrical Machines A separately excited DC motor has an armature resistance of 0.5 Ohm. The supply voltage is 250V. Armature current is 20A and the speed of rotation is 1500 rpm. Find the torque developed?

Electrical Machines If the temperature of armature resistance is increased, the speed of a series motor would

Electrical Machines Example of double excited machine is

Electrical Machines
A series generator is connected in series to a feeder having 0.5Ω resistance to boost the voltage. The induced voltage is given by Eg = 0.6Ia, Ra = 0.2Ω and Rs = 0.3Ω. Find the voltage boosted by the generator, when delivering 400 Amp?

Electrical Machines
Which of the following is/are the methods to reduce the armature reaction and its effects?

Electrical Machines
The dc motor which can provide zero speed regulation at full load without any controller, is

Electrical Machines
A separately excited DC motor has an armature resistance of 0.5 Ohm. The supply voltage is 250V. Armature current is 20A and the speed of rotation is 1500 rpm. Find the torque developed?

Electrical Machines
If the temperature of armature resistance is increased, the speed of a series motor would

Electrical Machines
Example of double excited machine is