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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Where can I get CPWD electrical shedule rates in web? please help me.

1 Answers  

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dear all, i want to ask that what is diversity factor. please explain breifly. because i hve quiet no concept about this.

2 Answers  

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what is rating providing of contactor,relay,fuse unit for motor output power

2 Answers  

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why electron flow is opposite to current flow?

3 Answers  

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When calculating the speed of a rotor required for a particular frequency of synchronous generator we use the equation 60f/p Is this p is the number of pole pairs of rotor & do we consider the number of pole pairs in the stator is 1?

0 Answers   UOM,

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Are generator action and motor action relates to a particular machine only?

2 Answers  

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what is back emf?

4 Answers   Bhel,

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What iz main protection of mediuum voltage motors and what iz the standard IR voltage of 6.6 and 11kv motors.

1 Answers   GE,

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the voltage per turn of a primary winding of a transformer is the same as the voltage per turn of the secondary winding of the transformer. why?

8 Answers  

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What is disc insulator and it's application..?

2 Answers  

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IN 500 KVA TRANSFORMER 11KV/415 VOLTS HOW TO CALCULATE THE HT CABLE SIZE AND LT CABLE SIZE FROM TRANSFORMER TO LT PANNEL. AND HOW MANY MAINSWITCHES OR MCBS WITH RATING ARE TO BE PROVIDED

2 Answers   BSF,

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