In a dc generator operating on load with its brushes on the geometrical neutral axis (GNA), the magnetic neutral axis (MNA) is shifted in the direction of rotation. Now, if the brushes are given a lead of 90° (electrical), then the MNA will

Electrical Machines
In a dc generator operating on load with its brushes on the geometrical neutral axis (GNA), the magnetic neutral axis (MNA) is shifted in the direction of rotation. Now, if the brushes are given a lead of 90° (electrical), then the MNA will

shift forward by 90°

coincide with the GNA

shift forward by more than 90°

shift forward by less than 90°

shift forward by 90°

coincide with the GNA

shift forward by more than 90°

shift forward by less than 90°

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Electrical Machines
Normally for the design of transformer the ambient temperature is taken as

35°C.

27°C.

45°C.

32°C.

35°C.

27°C.

45°C.

32°C.

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Electrical Machines
In a DC machine, the angle between the stator and rotor fields is

dependent upon the load.

90o.

180o.

0o.

dependent upon the load.

90o.

180o.

0o.

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Electrical Machines
For the above problem, find the induced voltage of an alternator of it is to deliver a load of 100 A at power factor of 0.8 lagging with terminal voltage of 200 V.

220 V.

225 V.

230 V.

222 V.

220 V.

225 V.

230 V.

222 V.

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Electrical Machines
In one 132 / 33 kV transformer the LV resistance is 0.02 per unit. The resistance referred to HV side is

0.08 pu.

0.16 pu.

0.01 pu.

0.02 pu.

0.08 pu.

0.16 pu.

0.01 pu.

0.02 pu.

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Electrical Machines
What is/are the necessary conditions for voltage build up in self excited generator?

Poles should contain residual flux.

All of these

Field winding should be properly connected to armature winding.

Field winding resistance should be less than critical resistance.

Poles should contain residual flux.

All of these

Field winding should be properly connected to armature winding.

Field winding resistance should be less than critical resistance.

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Electrical Machines

Electrical Machines In a dc generator operating on load with its brushes on the geometrical neutral axis (GNA), the magnetic neutral axis (MNA) is shifted in the direction of rotation. Now, if the brushes are given a lead of 90° (electrical), then the MNA will

Electrical Machines Normally for the design of transformer the ambient temperature is taken as

Electrical Machines In a DC machine, the angle between the stator and rotor fields is

Electrical Machines For the above problem, find the induced voltage of an alternator of it is to deliver a load of 100 A at power factor of 0.8 lagging with terminal voltage of 200 V.

Electrical Machines In one 132 / 33 kV transformer the LV resistance is 0.02 per unit. The resistance referred to HV side is

Electrical Machines What is/are the necessary conditions for voltage build up in self excited generator?

Electrical Machines
In a dc generator operating on load with its brushes on the geometrical neutral axis (GNA), the magnetic neutral axis (MNA) is shifted in the direction of rotation. Now, if the brushes are given a lead of 90° (electrical), then the MNA will

Electrical Machines
Normally for the design of transformer the ambient temperature is taken as

Electrical Machines
In a DC machine, the angle between the stator and rotor fields is

Electrical Machines
For the above problem, find the induced voltage of an alternator of it is to deliver a load of 100 A at power factor of 0.8 lagging with terminal voltage of 200 V.

Electrical Machines
In one 132 / 33 kV transformer the LV resistance is 0.02 per unit. The resistance referred to HV side is

Electrical Machines
What is/are the necessary conditions for voltage build up in self excited generator?