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DLF Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What are the difference between C-Curve and D-Curve for MCB's.

17 176435

Why the generator rating in kva

32 88344

what are the differences between MCB and MCCB ?

19 31491

what should be the air clearence between phase to phase, phase to earth in Medium voltage switchgear for 3.3kv,6.6kv,11kv,22kv and 33kv? Which is to be referred for this?

1 5704

in elevator industries , how to calculate the required KVA for the elevator (elevator spec- 40A module , motor of 13.5KW, 20A)

1 8273

I want formula to calculate cable size as per load given in kw & amp.I searched many sites but didn't right answer.Plz reply me asap.

41 393422

Why use the VCB at High Transmission System ? Why can't use ACB? Pls explain the ans.

5 15436

HOW DO I CALCULATE OVER LOAD RELAY & CONTACTOR IN DOL STARTER? & in dol why it is require circuit breaker?

6 17381

What is an Air COmpressor


If single phase having 220v so why 3phase is440v.

7 19216

why Batteries & Battery chargers are used in substation? what is the different between UPS & battery charger?

4 45184

what is the harmonics.

3 3296

what is the difference between earth and neutral.

9 7246

What is the function of UV coil ACB?

6 36414

How much KVAr bank reqired for 630 KVA transformer on full load for maintain power factor upto.99

4 11438

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