Answer / abhishek kumar

When AC excitation given to the field there is no emf genrate in roter so altornatar not produce any emf.

Answer / k.prakashchandra

You get distorted wave form ,instead of sinusoidal

Answer / raghu

I dont know

why need of ac exietation in alternater.

2 Answers  

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What sort of protection scheme do you suggest for the protection of a 10 HP motor?

1 Answers   Chevron,

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What is the value of system voltage?

2 Answers   Bhel,

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How to calculate the no of Ceiling fan (1200mm sweep) per unit area?

0 Answers  

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Which UPS (inverter) is better and why ? 12 V inverter and 24 V (two 12 V batteries in series) inverter which is better ......... which has the longer backup which has the greater charging time which has the greater discharging time thank you

2 Answers  

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can we individually produce electriciyt

1 Answers  

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a 100mva,400/200v transformer has leakage impdce of 10% draws a steady state line currentof---------------

0 Answers  

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ELECTRICAL MACHINE

2 Answers   Bhel, HPC, NHPC,

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why the autotransformer burnt while stating the pumpmotor?, In starter and motor there was no abnormality.

4 Answers  

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different between circuit breaker & switchgear & relays

6 Answers   EFS,

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Which are resistive loads & which one are inductive loads : Refrigerator, Split air conditioner, ceiling fans, well pump, fluoresecent bulbs, T.V, CRT Monitors, Adsl Routers, C.P.U, Printers, Deep Freezers, Speakers, DVD Players, Microwave oven etc. ? Output Power for these Appliances Would be same like this : P = V * A * P.F Or would be changed ? thanks

0 Answers  

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why induction motor takes high current?

1 Answers   Emerson,

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