in industrial lighting in each circuit how many lamps can be given? and how much load can be put on each circuit? is there standard for this? please help me with the standard description?

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i want to know that what is the eligibility critaria for ongc exam?

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How do you compute voltage drop and cable size over distance?

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What is meant by Guard relay ?

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Draw the circuit of clapp oscillator?

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suppose we using 3 phase motor of 440 v means what range of C.T. is require for measuring current , the rating of motor is 1HP ?

5 Answers  

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I want to apply for ONGC recruitment 2012 .I am BE Electrical but it is mentioned that to apply for this post you have to have Electrical supervisor certificate .so please tell me from where can i get such certificate ???

1 Answers  

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Why dc voltage used to excite alternator field in stead of ac?

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how to reduce earth resistance in sandy soil.

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Why we use d.c. meger in a.c. induction motor?

1 Answers  

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What do you mean by pf of a generator? Power factor purely depends on the load (wether inductive, reactive or unity) then what does the pf mentioned on the generator nameplate means?

3 Answers  

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Why thwe Direction of Rotation of a TABLE Fan & CEILING Fan are different?

8 Answers   Wipro,

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