Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What are the main parts of central chiller plant? Explain the function of each stage.

HSL, Shankar Electricals,


What are the Safety measures in central chiller plant? Explain them?

Carrier, HSL, CPIC, JLL,

17 36161

State the other types of Air Conditioners?



What will be the total current for 300kva UPS if it runs on 40 to 45 percent load. Is there any formula for to calculate the exact load.


4 13009

Residual voltage & residual current used in which protection?

Qatar Gas, Reliance, Transformers and Electricals,

5 7341

how to read AWG n how to convert AWG reading into mm?

1 3541

volts=230 c=10mf a=??


Can anyone tell me what will happen if AC & DC supply get mixed???

9 9083

working of bucholz relay of a transformer

7 17116

what is boucholz relay and the significance of it in to the transformer?

2 3456

How to calculate the ups battery back up? give the formula.

MacLellan, Cushman Wakefield, Exide, Ethio Telecom, Morgan Stanley, TATA,

13 79276

how to calculate the battery Ah? what is the formula.

Cushman Wakefield,

10 40512

why transformers are sometimes kept on concrete benches..?

2 2566

why the flooring of substation is done with small pebbles or stones..?

16 29003

what is blocking diode and what is the use of it in tne control circuit.Pls Explain it.

1 1569

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Un-Answered Questions { Electrical Engineering }

How to select transmission line type (i.e. 11kv or 33kv) for new established industries


can any one tell in easy method for circulating current ??


why the power factor of the induction motor is low?


i want to know that how the height of Ct ,cvt ,LA calculated on the basis of creepage distance


When can we take Neutral as common neutral link?


How to calculate per unit impedance of transformer?


how are reversing the direction of dc motor


when we decide to use soft starter drive or vfd drive in mcc to operate apump?


Lt motor sfu flashing reasons?


what do u understand from filter factor of reactor?


how we can adjust for three phase motor cold stall time ,hot stall time and thermal register set up?


what is meant by flywheel and its role in retardation test


trasnfarmaer core make


What are the causes for the failures of sandwich type (Al) busducts?


Dear sir, In our plant have Station Transformer having capacity,i want to know, why LV side 40 - 40MVA is given? & how we can get 6.3 KV supply from tertiary(i.e. Open delta connection), Vector Group YNyn0 - yn0 +d MVA Rating 80MVA / 40 - 40MVA + 26.7MVA Voltage rating 420 (Tap range +6,to -10)81.25% /11.5KV - 11.5KV +6.3KV