Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is automatic voltage regulator and it is used?

HAL,

2 1927

Questions :- HR- Q.1 about yourself & family background ? Q.2 Why u choose Power sector as ur carrier starting not any other sector ?? Q. 3 What think abt NTPC ? Techincal Questions:- Q.1 about Vocational Training……What u did , see the main equipments….etc Q.2 Why a transformer Noise during its running condition ? Q.3 about transformer oil material & Test name for the measurement of its dielectric strength & wht will u do if its dielectric strength goes low ? ……..some discussion type ? Q.4 What is relation between transmission lines & Communication lines ? Q.5 Which Machine u will prefer to use at a place where flammable gases are coming out & why ? Q.6 how fault in an electric system is detected & hw protection of equipments is done ? Q.7 Why we didn’t feel electric shock in an electric train ?? Q.8 Anything u want to ask from us ??

JCB, Bhel, BSES, DRDO, NTPC, Akona Engineering, Cranex,

44 21740

WILL THE PERCENTAGE IMPEDENCE FOR A ONAN TRANSFORMEER BE THE SAME COMPARED TO ONAF TRANSFORMER OF SAME RATING???

5 6165




Why don't we provide SURGE ARRESTORS for Transformer feeders?

5 5474

How does "OUT OF STEP" relay ,for Synchronous motor protection, work?

2958

Usually in the L & T make MCC feeders' power circuit,we have BMR after the MAIN CONTACTOR.,can we interchange their position, keeping the control logic same???

787

How does a VOLTAGE OPERATED DIFFERENTIAL RELAY work??

2 5372

Why do we give DC excitation to AC Synchronous motor??

Polycab, Lance, MBM,

9 26726




How is the percentage impedence of a transformer fixed at design stage???

750

Why can't we take NO LOAD TRIAL of motors having V1 mounting??

645

Why is it that variation allowed in supply voltage to motors is (+ or -)10 %, whereas that in frequency is (+ or - )5 %

3 3752

after how many spot we must chang secondry cable in portable spot welding gun?

672

What is the difference between MCCB, ACB & VCB

7 12647

what is mean by NTPC?,why didn't electric shock in train?

7 8947

wat's the procedure to take short circuit current for cable selection

733


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Un-Answered Questions { Electrical Engineering }

1. If 8.35%Z means the percentage impedance of 132kV-line from power company, we will like to reconfirm its base capacity.

671


Terminal blocks is used for segregate the connections... There is any principle for terminal block..?

860


What is the minimum underground tank size capacity considered for firefighting purpose?

684


we are small scale industry in production of rice & rice bran. Pls let me know how to take contract demand for our industry.. (for information we have total 600.hp)

1928


what is the electrical?

817






On a 6 KVA UPS we have to provide a DC MCB for Battery bank of 16 nos (12 V 42 AH). What Shall be the current rating of DC MCB ?

1017


Connection diagram for KW meter and  Kva meter

877


In hydel power plants, L.A's, S.C's are placed inside the control panel boards. what is the purpose? [already the total body was earthed to ground.]

579


May I know how much values to be set for earth fault, over current and short circuit values at 11kv side? I have 11kv van 1250amps rating. Present it's taking load 80amps?

241


Can we indroduce the principle of single phase induction mator to Transformer? i.e. by Producing rotating flux in the transformer.

884


what is the AC Plant and how can do the work with parts and picture tell us 150 Tr

726


How can we measure the residual voltage in dc machines?

421


what shoud be strength and weakness to impress interviewer????????

655


if i get a drop in my 1st year and the i clear my 2nd year and 3rd year all clear and i dont have any back logs so can i be able to sit in campus selection??

548


Can you explain about Restricited earth fault protection scheme

470