Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

How a Universal motor works in Both A.C and D.C? What is the constructional difference with other single phase motors?

1 5010

in a induction motor if we put capacitor across it will the power factor of the motor will improve? if yes how

Reliance,

6 10451

What are the saftey parameters in transformers?

2 6729

Can without battery on line UPS,off line UPS or Invertor works please brief.

5 10798

what is the differebt between ac and dc fuse?

IBM,

2388

wat is d first thing to be seen 2 lay a cable in a particular area??

1 3570

what is mean by current? and voltage?

4 7753

in transmission line 11kv is step up or step down? why?

5 14397

why tan delta test conducted in electrical equipmenr

4 13193

is there or does RCCB work for single phase connection?

2 6527

whenever a squirrel or a crow gets tangled near the out put of the feild transformer there is a discharge of 440 volts of current through the neutral due to which my appliances blow up causing a huge bang.will the RCCB help in these conditions

1 3253

why we are using star connection and delta connection? difference?

5 18765

In 400KV Switchyard, we have used Circuit Breaker With PIR, what is the significance of PIR & why they'r used?

2 20745

how to CHECK CT AND PT AT THE FAULT OCCUR IN GENERATOR RELAY PANEL .

Birla,

2333

What is the difference between rulling span and wind span of of an Over Head Transmission Line?

2388

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Un-Answered Questions { Electrical Engineering }

I have a situation to design sub-Distribution board/Panel meant for feeding power sockets. In the incomer CAN i Take TP MCCB with Neutral Link and All the outgoing feeders with to sockets with TP MCCB and Neutral Link? P.S : My System is IT Earthing

1879

I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

2042

FEINGING DECREASES THE FLUX DENSITY IN THE AIR GAP. HOW?

2249

what is the id1 & id2 setting in differential protection relay of CSPC?

2837

what is the difference between directional & non directional earth fault with example please explain.

1898

what is meant by skew width in machines?

2275

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,

2951

Differentiate between real and apparent power?

1218

Define stepper motor. What is the use of stepper motor?

1306

Why 15Amp. MCB is suitable to carry load of 1.5Ton Ac please Explain?

2228

although ckt breakers have taken the place of old fuse. But instead of it , these older ones are still used in the industries and homes ? why .... what are their advantages and disadvantages ? which one is leading and winning the race and competition ?

2102

how 650 volts creates? where is use?

2258

Do closed loops systems require manual input?

1269

Explain the functioning of diode?

1138

Either the Armoured Earthing strip of HT 3 core cable have to pass through CB CT or not , why ???

2137

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