Answer / ysharma710@gmail.com

There are various types of electrical cables these are :=
1.BELTED CABLE : used upto 22kv
2.SCREENED CABLE : used upto 66kv
3.EXTRA HIGH VOLTAGE CABLES : used upto 66kv
4.OIL FILLED CBLES : are of 3 types
a) SELF CONTAINED CIRCULAR TYPE CABLE : used upto 33kv
B)SELF CONTAINED FLAT TYPE CABLE : used upto 33kv
C)PIPE TYPE OIL FILLED CABLE : used upto 33kv
5.GAS-PRESSURED CABLES : are of 2 types :
a) EXTERNAL GAS-PRESSURED CABLES
b) INTERNAL GAS-PRESSURED CABLES
5.COMPRESSED GAS INSULATED CABLES(GIC): used from 132kv
upto 1200kv
6.CROSS LINKED POLYETHYLENE(XLPE)CABLES

what questions will be asked for 11/33KV licence interview APSEB hyderabad. Can any one share question and answers.

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how can we calculate the reactence of the current transformers?

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Whether power factor should be high or low? Why?

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What is dc current source? Differentiate between ideal and non ideal current sources?

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I BOUGHT A HAVELLS ACCL WITH GENERATOR STOP FASCILITY(i.e- BASICALLY IT IS A AUTO CHANGE OVER SWITCH) FOR MY HONDA EXK 2000S HOME GENERATOR (WHICH START IN PETROL & RUN IN KEROSENE). ACCL HAS 8 POINT. 2 FOR MAINS(PH & NUE), 2 FOR LOAD, 2 FOR GEN AND 2 FOR IGNITION POINT(X1 & X2). THE IGNITION POINT IS SPECIALLY FOR AUTO ENGINE STOP WHEN MAINS POWER RESTORE. I CONNECT THIS X1 & X2 POINT TO THE GENERATOR STATER MOTOR & EARTHING POINT. BUT WHEN MAINS FAILS THE GENERATOR COULD NOT START, BUT WHEN DISCONNECT THOSE X1 OR X2 POINT, THEN THE GENERATOR START. BUT WHEN MAINS ON THEN THE GENERATOR SHOULD START, AND WHEN I OFF THE MAINS THE GENERATOR AUTOMATICALLY STOP. PLESE HELP ME HOW I STOP THE GENERATOR AUTOMATICALLY WHEN THE MAINS RESTORE.

2 Answers   Honda,

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According to conduit size which size wiring & how many wires can we provide wires in conduit & how can we select conduit size accordingly?

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at what condition restricted earth fault relay will act?

1 Answers   Equate,

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tell me any book for current n potential trasformer with full knowledge ?

1 Answers  

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What should be the setting of an earth fault relay.

2 Answers   HP,

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why HV test for cables?.why 0.7times?

1 Answers   Bosch, Prince Food Products,

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please send me RRB electrical engineer previous year questions for Sr. Section Engineer

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we have taken HV test of 2.5 k and Megger test on 11 kv HT cable.here it shows no fault but when we are charging the same cable with 11 kv supply why the VCB 11 kv gets tripped can anybody define the possible cause of fault ?

4 Answers   MAHINDRA,

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