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 to select power and control contactor .

Bhel,

1 4082

What is the IS standard for MCCB to be use (As per capacity of AMP)& for ACB also.

1976

Hi, We have have the major losses between BBT ( Bus Bar Trunking) to LT Incomer & LT to HT incomer, how to arrive the losses?

1 3763

What are the complete specifications of a motor?.

RRB,

2 6119

why in scott connection of transformers, main transformer is tapped at 50% and teaser transformer at 86.6%?

Bhel, Bosch, College School Exams Tests, Wipro,

5 33483

difference between analog pressure gauge & digital pressure gauge?

1 7594

what is the meaning of electrical maintenance?

GE Healthcare, MAHINDRA,

3 23646

Sir if i have 2kv ups in which 17ah 8 battries load 600watts how much back up time i get and if i put 6kv ups with the same no of battries same amp can i get more back up time please give reply exactly what is the procedure to calculate back up time for different kv,s

3 6660

definition of transponder?

1 3401

working principle of current sensing relay? how its work?

1 5767

write encoder 17 pins details? pin a;b+, pin b;w+,..pin s & t. what is the meaning of b+, w+? explain;

2112

what is lumped and distributed elements?

1910

Write a note on RC operational amplifier as integrator

1 3416

what are the main differences of delta and star connection

Essar,

5 7936

can we run three phase motor by single phase? and what happens if we do this

Kirloskar,

8 13953

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Un-Answered Questions { Electrical Engineering }

why on delay timer used for fully automatic star delta starter?

1647

what should be the no load current for 3 phase ac motors ranging from 5 kw to 1000kw?

1756

when generator short circuit condition, the current how dissipates. or at short circuit voltage not available then current how can flow?

2158

In 90 kva alternator that produce the output voltage is 115(p-n),200(p-p) at 1500 rpms means what ampere it produced ?

1995

I am experienced with house and industrial wiring but I don't have any licence how can I apply an licence and which type of licence i can get i didn't complete deee just only experience

1591

what is class of SPD and dittels of all class ?

2073

how to calculate the surge level of surge suppressors related to the SF6 cicuit breakers?

1941

1. The DC generaror,s induced output emf is connected with a DC motor(as load). when increasing the load of the motor by using brake drum or any way. what are the parameters will changes in both motor and generator(voltage, current, resistance, frequency, speed, torque, power, flux etc...) 2. Similarly for AC generator and AC motor 3. similarly if using DC batteries instead of DC generator, What happens?

2248

why we are using Load factor?

1881

What is frantic effect?

1213

how does grading rings & spacers in transmission line works? Working Principle?

2045

WHAT SHOULD BE THE BEST CURRENT RATINGS (PRIMARY / SECONDARY)FOR A CT INSTALLED AT THE INCOMING 11KV PANE? WILL IT BE CALCULATED ON THE BASES OF MAXIMUM DEMANT VALUE OR ON SUM OF ALL TRANSFORMER'S KVA? NOMALLY MAX DEMAND REPRESENT THE MAXIMUM OPERATING LOAD OF THE PLANT AND TOTAL KVA OF (SAY 5 NUMBERS TRANSFORMERS) REPRESENT THE CONNECTED LOAD. WHICH i.e. MAX DEMAND KVA OR CONNECTED KVA ARE BETTER TO USE FOR CT CURRENT CALCULATION? PLEASE ANSWER.

1872

Explain M Var? Which types of problem occurs when reactive power increase at the time of full load of plant and at the time of synchronize of plant?

1741

List examples of current sources?

1066

How to find ampere on ht side for selection of cable size ???

1761

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