What is the criteria for selecting the voltage classes of an AC Induction Motor.The KW rating above/below which ht/lt selection is made may be provided in details.

0 Answers   DAE,

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7. Why AC motors, AC bulbs etc... are donot operated by DC signals? and Why DC motors, DC bulbs etc... are donot operated by AC signals?

2 Answers   Bhel,

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why do we use spark detector inside the slip ring brush compartment 0ona slip ring induction motor?

0 Answers  

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WHAT is the no of starts/hr for 3.3 KV, 300 KW motor. Motor is vertical flange type.

1 Answers   DAE, Siemens,

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Define maximum demand?

0 Answers  

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what is principle of DC machines?

5 Answers   APTransco, NTPC, Wipro,

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whatis the test procedure for lightning arrester which was installed one year back. i want check it whether it is working or not.

1 Answers  

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When oil level in the oltc of power transformer reduces , oil surge relay will act or not

4 Answers  

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what is function of centrifugal switch in single phase induction motor..?

3 Answers  

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What is line resistance of cable & how it can be measured ?

0 Answers  

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What are the different lines and what are the different types of losses occur on them?

2 Answers  

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dear all, in motor operation , motor is of 100 hp and bimetal relay setting is 130 amp, if relay is getting tripped on 120 amp balance current what can be the reason? Relay is newly replaced. I dont know but is there any frequency effect in thit case? Can frequency variation affect bimetal relay operation?

1 Answers  

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