Answer / Rahul Singh

Completing an apprenticeship with Tamil Nadu Electricity Board (TNEB) would make you eligible to apply for a Grade C License, which is required for electrical work involving installations of up to 1000 volts AC. To obtain the license, you may need to pass an exam conducted by the appropriate regulatory body or undergo further training and assessments.

what is stay bow?

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how many earthing is required for sever room?

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1hp single phase load = howmuch 3 phase load

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What is fault level? How can be calculate the fault level?

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Please tell me if you are electrical engineer,and you are appointed for the maintainance of Electrical Power plant,then which parts of the plant deal with you.Also tell how these parts/components work.

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1)Explain why the cradle guard is used on railway crossing in overhead line construction?

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There are two nos of 33Kv/11Kv 5MVA transformers conecting through HT cable from substation having metering at substation itself.One transformer used at a time another remains stand by.Further 11 nos of 11Kv/440V transformers are attached on it and each transformer is having its own Power factor correction panel.Now one 33/11Kv transformer at no load condition/Stand by condition is having power factor in leading side upto 0.21 and while when another tranformer at same situation have power factor in lagging 0.42. Now one thing is clear that transformer one is having 1.5 Km long 33kv cable due to that PF goes in leading side and another is having only 250 mtr length remains him lagging. Now i want to know that how i can maintain the Power factor at no load/ stand by position though both are behaving in seperate manner.

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why do transformer make a sound

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how MW increase when steam input increase in turbine.

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I am working on a 11KV system with fault current of 40KA for 1 second. I have selected 2500MVA 11/0.433KV transformer. How can i find the impedance value for this transformer? Please help me.

2 Answers   PPL,

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Sir, I have applied for the of Assistant.engineer of NPDCL. please send me all AP TRANSCO AND JENCO solved papers of previous exams . I requested send me the papers to my id as soon as possible (rajanikanth_peddi@yahoo.co.in) (This is very urgent) Thank You,

0 Answers   APTransco,

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Why in USA supply voltage parameters(230V,60Hz)are different,is there any advantage please brief.

1 Answers   APC, DRJ ARDE,

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