An 8 pole DC generator has 500 armature conductors and useful flux per pole of 0.065 Wb. What will be the emf generated if it is lap connected and runs at 1000 rpm. What must be the speed at which it is driven to produce the same emf if it is wave wound?

Electrical Machines
An 8 pole DC generator has 500 armature conductors and useful flux per pole of 0.065 Wb. What will be the emf generated if it is lap connected and runs at 1000 rpm. What must be the speed at which it is driven to produce the same emf if it is wave wound?

2166.67V, 270 rpm.

541.67V, 200 rpm.

2166.67V, 230 rpm.

541.67V, 250 rpm.

2166.67V, 270 rpm.

541.67V, 200 rpm.

2166.67V, 230 rpm.

541.67V, 250 rpm.

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Electrical Machines
The air gap between stator and the rotor of the 3 - φ induction motor is kept

air gap does not matter.

as wide as possible.

depends on the material of stator and the rotor.

as small as possible.

air gap does not matter.

as wide as possible.

depends on the material of stator and the rotor.

as small as possible.

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Electrical Machines
In shapers and slotters which motor are preferred?

Slip ring IM.

Synchronous motor.

Double cage motor.

Squirrel cage IM.

Slip ring IM.

Synchronous motor.

Double cage motor.

Squirrel cage IM.

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Electrical Machines
Considering a galvanometer is connected to the rotor of a 3 - ÃŽÂ¦, 4 pole, 50 Hz IM and is making 130 oscillations in a minute, then calculate the rotor speed?

1500.

1450.

1435.

1440.

1500.

1450.

1435.

1440.

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Electrical Machines
Two DC series motors are connected in series and are driving the same mechanical load. If the motors are now connected in parallel the speed will become

one fourth.

4 times.

half.

double.

one fourth.

4 times.

half.

double.

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Electrical Machines
A dc shunt generator, when commissioned after a major repair of the field system, failed to build Up voltage. It was because

field resistance was higher than critical resistance

field winding was wrongly connected

there was a break in the armature circuit

field system lost residual magnetism

field resistance was higher than critical resistance

field winding was wrongly connected

there was a break in the armature circuit

field system lost residual magnetism

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines

Electrical Machines An 8 pole DC generator has 500 armature conductors and useful flux per pole of 0.065 Wb. What will be the emf generated if it is lap connected and runs at 1000 rpm. What must be the speed at which it is driven to produce the same emf if it is wave wound?

Electrical Machines The air gap between stator and the rotor of the 3 - φ induction motor is kept

Electrical Machines In shapers and slotters which motor are preferred?

Electrical Machines Considering a galvanometer is connected to the rotor of a 3 - ÃŽÂ¦, 4 pole, 50 Hz IM and is making 130 oscillations in a minute, then calculate the rotor speed?

Electrical Machines Two DC series motors are connected in series and are driving the same mechanical load. If the motors are now connected in parallel the speed will become

Electrical Machines A dc shunt generator, when commissioned after a major repair of the field system, failed to build Up voltage. It was because

Electrical Machines
An 8 pole DC generator has 500 armature conductors and useful flux per pole of 0.065 Wb. What will be the emf generated if it is lap connected and runs at 1000 rpm. What must be the speed at which it is driven to produce the same emf if it is wave wound?

Electrical Machines
The air gap between stator and the rotor of the 3 - φ induction motor is kept

Electrical Machines
In shapers and slotters which motor are preferred?

Electrical Machines
Considering a galvanometer is connected to the rotor of a 3 - ÃŽÂ¦, 4 pole, 50 Hz IM and is making 130 oscillations in a minute, then calculate the rotor speed?

Electrical Machines
Two DC series motors are connected in series and are driving the same mechanical load. If the motors are now connected in parallel the speed will become

Electrical Machines
A dc shunt generator, when commissioned after a major repair of the field system, failed to build Up voltage. It was because