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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

where any change in supply line due to the incipient faults in three phase induction motor

ABB,

2 4903

why voltage swells and dips???

3 5212

sourse is 66 KV / 350 MVA, transfarmer is 1000 KVA 6.6 / 0.415 kv, iF fault is 28.75 MVA on 0.415 KV Bus then calculat the Transfarmer Impidance

2100

why and how fault current flows through ground?

1 4409

What facility we get after CT secondary earthing and how?

Reliance,

2254

Why indian power system in 11kv,22kv,33kv,66kv,110kv,220kv ? 2) Why ups required dedicated earth?

Energia, L&T, Sail,

8 19645

In our generating power station we get electric shock in the battery bank, what will be the reason?

3 4969

What should be the conservator minimum oil level required in 2 mva transformer

JSW,

2 10614

Why we use auxillary relay ? what is function of differential relay, directional o/c relay?

Century Rayon, Mechanical,

2199

what is difference between earthingpits,earthing grid & earthing mess?

TATA,

2516

what is diff. between earthing grid,earthing mess, earting grid?

Century Rayon, Emco, Tailor Solution,

2411

Why? We r used 50sq. mm. And above size cable in 3.5 core and below size are used in 4core

2 4693

what is difference betwen genrator and alternator?

Tanfac,

3 5907

what is difference between fuse and breaker?

ABB,

6 10379

why we are discharging h.t supply during shutdown time

1 4144

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Un-Answered Questions { Electrical Engineering }

What is the ideal position cooling fan inside the dc motor?

2093

how can motor both beasrings insulation resistance can be check?

2030

What is the formuala to calculate the rating of motor protection circuit breaker

2227

State the factors, for the choice of electrical system for an aero turbine.

1171

i want to put single phase load on scott connected transformer,eventhough how to balance the transformer.

1858

What is q factor?

1131

HOW WE CHOOSE EARTH'S POTENTIAL AS ZERO V?

2060

can i connect the two phases of scott connected transformer,if not why?

1975

Hi guys! Plz help me to answer the following questions. 1. What are the types of transmission line energy losses? 2. Why are the VLF are used some types of services? 3. What frequencies are used for reliable beyond the horizon terrestrial communication without repeaters? 4. To permit selection of 1 out 16 equi-probable, what is the number of bitis required? 5. What is the most common modulation used for telegraphy? 6. What is the multiplexing is used to increase the capacity of the optic fiber? Thanks

2090

What is force on a conductor in a magnetic field ?

1079

What is the BS(British Standard)code for 11kv motor

4990

whit is 33kv power 300*300 cable full current with formula

1803

Explain the function and difference of Restricted earth fault, simple earth fault and sensitive earth fault with connection diagram.

2664

what is the difference between neutral and earth

2111

what are factors comes under relay setting (distance relay 7sa52) under OPEN DELTA VTs connection??

2561

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