Consider the following statements : For a level compounded dc generator to run at constant voltage, the series field mmf must effectively compensate 1. armature reaction mmf 2.armature resistance drop 3. brush contact voltage drop Which of these statements is/are correct ?

Electrical Machines
Consider the following statements : For a level compounded dc generator to run at constant voltage, the series field mmf must effectively compensate 1. armature reaction mmf 2.armature resistance drop 3. brush contact voltage drop Which of these statements is/are correct ?

2 alone

1, 2 and 3

1 and 3

1 and 2

2 alone

1, 2 and 3

1 and 3

1 and 2

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Electrical Machines
The use of double squirrel cage winding on the rotor provides

reduced starting torque.

low noise.

higher efficiency.

a large starting torque.

reduced starting torque.

low noise.

higher efficiency.

a large starting torque.

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Electrical Machines
In synchronous generator V curve is drawn between

field current on X-axis and power factor on Y-axis.

field current on X-axis and armature current on Y-axis.

either of these.

field current on Y-axis and armature current on X-axis.

field current on X-axis and power factor on Y-axis.

field current on X-axis and armature current on Y-axis.

either of these.

field current on Y-axis and armature current on X-axis.

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Electrical Machines
As compared to DOL starting, a cage induction motor with star-delta starting shall have

more starting torque.

smoother acceleration.

reduced starting current.

more starting time.

more starting torque.

smoother acceleration.

reduced starting current.

more starting time.

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Electrical Machines
In a resistance split phase motor, what is the range of torque angle?

90°

0°

70° to 85°

25° to 30°

90°

0°

70° to 85°

25° to 30°

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Electrical Machines
In above question, the output power delivered by generator G1 and G2 will be

6.3 kW, 9.3 kW.

9.3 kW, 9.3 kW.

5.7 kW, 8.7 kW.

9.6 kW, 12 kW.

6.3 kW, 9.3 kW.

9.3 kW, 9.3 kW.

5.7 kW, 8.7 kW.

9.6 kW, 12 kW.

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Electrical Machines

Electrical Machines Consider the following statements : For a level compounded dc generator to run at constant voltage, the series field mmf must effectively compensate 1. armature reaction mmf 2.armature resistance drop 3. brush contact voltage drop Which of these statements is/are correct ?

Electrical Machines The use of double squirrel cage winding on the rotor provides

Electrical Machines In synchronous generator V curve is drawn between

Electrical Machines As compared to DOL starting, a cage induction motor with star-delta starting shall have

Electrical Machines In a resistance split phase motor, what is the range of torque angle?

Electrical Machines In above question, the output power delivered by generator G1 and G2 will be

Electrical Machines
Consider the following statements : For a level compounded dc generator to run at constant voltage, the series field mmf must effectively compensate 1. armature reaction mmf 2.armature resistance drop 3. brush contact voltage drop Which of these statements is/are correct ?

Electrical Machines
The use of double squirrel cage winding on the rotor provides

Electrical Machines
In synchronous generator V curve is drawn between

Electrical Machines
As compared to DOL starting, a cage induction motor with star-delta starting shall have

Electrical Machines
In a resistance split phase motor, what is the range of torque angle?

Electrical Machines
In above question, the output power delivered by generator G1 and G2 will be