A part an alternator winding consist of eight coils in series, each having an emf of 20 V rms induced in it. Coils are placed in successive slots and between each slot and the next, there is an electrical phase displacement of 30°. Find the emf of eight coils in series

Electrical Machines
A part an alternator winding consist of eight coils in series, each having an emf of 20 V rms induced in it. Coils are placed in successive slots and between each slot and the next, there is an electrical phase displacement of 30°. Find the emf of eight coils in series

66.91 V.

76.91 V.

56.91 V.

86.91 V.

66.91 V.

76.91 V.

56.91 V.

86.91 V.

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Electrical Machines
In DC machine shape of armature MMF wave is?

Peaky in nature.

Saddle shape.

Triangular and directed towards brush axis.

Triangular and directed towards main pole.

Peaky in nature.

Saddle shape.

Triangular and directed towards brush axis.

Triangular and directed towards main pole.

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Electrical Machines
The three point starter is used for

Shunt motor.

Series motor.

Shunt, compound and series motor.

Shunt motor as well as compound motors.

Shunt motor.

Series motor.

Shunt, compound and series motor.

Shunt motor as well as compound motors.

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Electrical Machines
Quadrature axis synchronous reactance is the ratio of

Vmin to Imax.

Vmax to Imax.

Vmax to Imin.

Vmin to Imin.

Vmin to Imax.

Vmax to Imax.

Vmax to Imin.

Vmin to Imin.

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Electrical Machines
What are the starters used for starting of cage motors?

Auto transformer starter.

Star-delta starter.

DOL starter.

All of these.

Auto transformer starter.

Star-delta starter.

DOL starter.

All of these.

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Electrical Machines
Two transformers with identical rating, are designed with flux densities of 1.2 and 1.4 Wb / m2 respectively. The weight of first transformer per kVA is

none of these.

equal to that of second transformer.

less than that of second transformer.

more than that of second transformer.

none of these.

equal to that of second transformer.

less than that of second transformer.

more than that of second transformer.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines

Electrical Machines A part an alternator winding consist of eight coils in series, each having an emf of 20 V rms induced in it. Coils are placed in successive slots and between each slot and the next, there is an electrical phase displacement of 30°. Find the emf of eight coils in series

Electrical Machines In DC machine shape of armature MMF wave is?

Electrical Machines The three point starter is used for

Electrical Machines Quadrature axis synchronous reactance is the ratio of

Electrical Machines What are the starters used for starting of cage motors?

Electrical Machines Two transformers with identical rating, are designed with flux densities of 1.2 and 1.4 Wb / m2 respectively. The weight of first transformer per kVA is

Electrical Machines
A part an alternator winding consist of eight coils in series, each having an emf of 20 V rms induced in it. Coils are placed in successive slots and between each slot and the next, there is an electrical phase displacement of 30°. Find the emf of eight coils in series

Electrical Machines
In DC machine shape of armature MMF wave is?

Electrical Machines
The three point starter is used for

Electrical Machines
Quadrature axis synchronous reactance is the ratio of

Electrical Machines
What are the starters used for starting of cage motors?

Electrical Machines
Two transformers with identical rating, are designed with flux densities of 1.2 and 1.4 Wb / m2 respectively. The weight of first transformer per kVA is