A DC Motor is driving a constant load torque having armature resistance of 0.25 Ω and armature current of 60 A having connected to a voltage of 230 V. Now a resistance of 1 ohm is added into the armature circuit. The ratio of their speed will be

Electrical Machines
A DC Motor is driving a constant load torque having armature resistance of 0.25 Ω and armature current of 60 A having connected to a voltage of 230 V. Now a resistance of 1 ohm is added into the armature circuit. The ratio of their speed will be

0.25.

1.24.

0.72.

0.62.

0.25.

1.24.

0.72.

0.62.

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Electrical Machines
In a lap winding dc machine number of conductors are 100 and number of parallel paths are 10. Find the average pitch

50

100

1

10

50

100

1

10

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Electrical Machines
Which of the following induction motor has the highest starting torque?

None of these

Squirrel cage induction motor.

Slip ring induction motor.

Same in both induction motors.

None of these

Squirrel cage induction motor.

Slip ring induction motor.

Same in both induction motors.

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Electrical Machines
Field winding of a DC series motor is usually provided with thick wire

as it carries large load current.

to reduce the insulation of materials.

in order to reduce eddy current to provide large flux.

to provide large flux.

as it carries large load current.

to reduce the insulation of materials.

in order to reduce eddy current to provide large flux.

to provide large flux.

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Electrical Machines
Compensating winding are used to rectify the flux density waveform at

throughout the air gap.

interpole region.

region under main pole.

None of these

throughout the air gap.

interpole region.

region under main pole.

None of these

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Electrical Machines
3rd harmonics are eliminated in induction motor by using

zig - zag connection.

star connection.

V connection.

delta connection.

zig - zag connection.

star connection.

V connection.

delta connection.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines

Electrical Machines A DC Motor is driving a constant load torque having armature resistance of 0.25 Ω and armature current of 60 A having connected to a voltage of 230 V. Now a resistance of 1 ohm is added into the armature circuit. The ratio of their speed will be

Electrical Machines In a lap winding dc machine number of conductors are 100 and number of parallel paths are 10. Find the average pitch

Electrical Machines Which of the following induction motor has the highest starting torque?

Electrical Machines Field winding of a DC series motor is usually provided with thick wire

Electrical Machines Compensating winding are used to rectify the flux density waveform at

Electrical Machines 3rd harmonics are eliminated in induction motor by using

Electrical Machines
A DC Motor is driving a constant load torque having armature resistance of 0.25 Ω and armature current of 60 A having connected to a voltage of 230 V. Now a resistance of 1 ohm is added into the armature circuit. The ratio of their speed will be

Electrical Machines
In a lap winding dc machine number of conductors are 100 and number of parallel paths are 10. Find the average pitch

Electrical Machines
Which of the following induction motor has the highest starting torque?

Electrical Machines
Field winding of a DC series motor is usually provided with thick wire

Electrical Machines
Compensating winding are used to rectify the flux density waveform at

Electrical Machines
3rd harmonics are eliminated in induction motor by using