Consider the following statements : 1. interpole windings are connected in series with armature windings 2. polarity of interpoles must be the same as that of the main poles in advance 3. distortion of the main field under the pole shoes is not affected by the use of interpoles From above, the correct answer is

Electrical Machines
Consider the following statements : 1. interpole windings are connected in series with armature windings 2. polarity of interpoles must be the same as that of the main poles in advance 3. distortion of the main field under the pole shoes is not affected by the use of interpoles From above, the correct answer is

1 alone

1 and 2

2 and 3

1 and 3

1 alone

1 and 2

2 and 3

1 and 3

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Electrical Machines
The armature resistance of the dc motor is generally of the range

100 ohm.

0.5 ohm.

50 ohm.

0.1 ohm.

100 ohm.

0.5 ohm.

50 ohm.

0.1 ohm.

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Electrical Machines
Which of the following voltage regulator is preferred for providing large values of load current?

None of these

Transistor series regulator.

Zener diode shunt regulator.

Transistor shunt regulator.

None of these

Transistor series regulator.

Zener diode shunt regulator.

Transistor shunt regulator.

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Electrical Machines
At the instant of starting, the per unit slip of 3 - ÃŽÂ¦ induction motor is

0.5.

1.0.

0.1.

0.05.

0.5.

1.0.

0.1.

0.05.

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Electrical Machines
Neglecting all losses, the developed torque (T) of DC separately excited motor, operating under constant terminal voltage is reduced to its output power (P) as

T ∝ √P.

T2 ∝ P3.

T ∝ P.

T is independent of P.

T ∝ √P.

T2 ∝ P3.

T ∝ P.

T is independent of P.

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Electrical Machines
The synchronous reactance( Xs) is the

reactance due to armature reaction of the machine

combined reactance due to armature reaction and leakage flux

reactance either due to armature reaction or leakage flux

reactance due to leakage flux

reactance due to armature reaction of the machine

combined reactance due to armature reaction and leakage flux

reactance either due to armature reaction or leakage flux

reactance due to leakage flux

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Electrical Machines

Electrical Machines The armature resistance of the dc motor is generally of the range

Electrical Machines Which of the following voltage regulator is preferred for providing large values of load current?

Electrical Machines At the instant of starting, the per unit slip of 3 - ÃŽÂ¦ induction motor is

Electrical Machines Neglecting all losses, the developed torque (T) of DC separately excited motor, operating under constant terminal voltage is reduced to its output power (P) as

Electrical Machines The synchronous reactance( Xs) is the

Electrical Machines
The armature resistance of the dc motor is generally of the range

Electrical Machines
Which of the following voltage regulator is preferred for providing large values of load current?

Electrical Machines
At the instant of starting, the per unit slip of 3 - ÃŽÂ¦ induction motor is

Electrical Machines
Neglecting all losses, the developed torque (T) of DC separately excited motor, operating under constant terminal voltage is reduced to its output power (P) as

Electrical Machines
The synchronous reactance( Xs) is the