Answer / sathya

motor ideal timing some of back emf in motor side.then start the motor bemf will be high after motor reach the speed bemf will be zero.

Answer / mn.krishnamurthy

In Idle Condition of the Motor and there is no back EMF generated in the motor to appose the applied voltage motor will draw very high current with respect to the applied Voltage as per the Ohms law with Low Winding resistance.
Once the Motor starts running it will generate back EMF which will appose the applied Voltage and the Current will draw as the speed Picks up

what is negative phase sequence

1 Answers  

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A 230V, 60W bulb when connected to 230v supply what current and power will consume, if same bulb is connected to 200v what purrent and power will consume?

3 Answers  

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in ring main system we use the isolater b/w transfer bus and main bus if we r not use isolatar than wat will be the effect in our sys.

0 Answers  

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what is the capacitance of a single conductor

6 Answers   Bhel,

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What is meant by system?

0 Answers  

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how braking & making capacity of circuit breaker are calculated?

0 Answers   Bhel,

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what is the diff between earth leakage relay and earth fault relay?

7 Answers  

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What is erection of electrical system?

1 Answers  

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what about the input current fan when regulator regulates to speed low?

1 Answers  

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what is the meaning of Ring Mean Unit in a substation or trasformer also tell me its oerpuse?

4 Answers   NPTC, NTPC,

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What is Percentage impedence of a transformer? why it is expressed at a percentage? what is the importance of percentage impedence in case of a transformer?

0 Answers   Haldia,

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When testing an earthing connection, we use a 60 or 100 candle bulb with a phase connected direct from supply and the other wire to the new earthing provided.If the bulb glows then the earth is ok.Else earth connection is not Ok. So, why dont we can use all the home appliances taking a single wire from the phase and the return connection to Earth instead of return connection to neutral?

2 Answers  

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