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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

wath is skin effect?

9 11817

How many earthing pits required for diesel generator set ? Why ?

1 8473

what is the fuction of electrical transducer in control pannel?

6 7991

which is batter in construction job,ELCB or RCCB?

HCC,

7 18307

whate is aelectrical power fector for exampal

8 12275

We have 800KW motor operating at 6600Volt,50 Hz supply.During 1st startup it tripped on overcurrent trip.It's FLA is 88 Amps.The K factor of Thermal overloaaad was set on .94 initially.then we set at 0.97 and then it started fine.i dont understand why it tripped first?What are the protections which comes in picture during starting ?

6 9613

HOW MANY EARTHINGS REQUIRED FOR GENERATER

Juniper Networks,

10 18650

what happen when dc shunt motor field is sudden open in running condition

APGenco, Bhel, IIT, JMRC, TCS,

34 78997

if the magnetic lines can pass through a vaccuum area

1844

What Is Transformer Impedance ?

Con Edison,

6 16297

How conventional fire alarm system works?

1 2647

WHAT IS SHORT CIRCUIT STRENGTH OF 100 AMPS MCCB?

ACC,

2072

how to choose the cable rating for load (KW)? EXAMPLE.50KW load

ACC, NCUI, Polycab, PowerSol, Siemens, SW,

14 172346

whats the diff b/w mpcb and mcb?weather it trips on single phasing or not.

Electra Power, Essar,

9 17540

what are the safety measure & controls in engine?

RRB,

2 6839

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Un-Answered Questions { Electrical Engineering }

please explain to me how to calculate current,voltage,resistance with formula??

1395

what is transient enclosure vltage , very fast transients, very fast transient over voltages

2106

what type of motor used to move a 1 ton gate? and relate ratings with load.

1759

what is the safety of voltage power transformer(2250KVA0

1940

How can two 3 phase transformers of same KVA and Voltage be connected in parallel?

1821

what is errection pcbs?

1875

what are the applications of transistors with low dc gain, high dc gain and medium dc gain( beta)?

1728

What is the role of feedback in a closed loop control system?

1048

How to check 11000/1.732 to 110/1.732 Potentila transformer (PT)?

2162

why ten delta testing is carried out on power transformer

1779

explain the process of commutation in a dc machine. Explain what are inter-poles and why they are required in a dc machine.

1124

hi everybody how to design string combiner box (scb) internal parameters like bus bar and spd (surge protection device and fuse which place to set that,and also bus bar one particular cross sectional how much heat generated and how much power loss tell me Clearly and briefly

1949

Diagram and details of polarity test for Current Transformer 11kv 400/200/100/1A

2992

what is circuit recombiner and how it is different from circuit breaker

1827

Why do we need interlocking in a HT metering or Ring main unit switchgear?

1968

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