Electrical Engineering Interview Questions
Questions Answers Views Company eMail

A 2083kva AVR was tested, phase to ground shows continuity, what is the implications

509

Types of circuit breaker

1 819

Different types of relay fault which phase sequence??

465

If 22 KV HT line, Current transformer is 25/5 then how to calculate multiplying factor.

605

how to compare with Relay settings for HT< panels, RMU panel, and PSS CSS transformer?? 1) Load amps, 2)Tripping time, 3) CT ratio, 4)Cable size 5) Transformer KVA rating 6) transformer full load amps

723

how to setting Load amps tripping time and extra settings for load Transformer protection relay with RMU panel using C&S model relay..?

584

In Air circuit breaker LSIG protection unit is used. Without fault in cables (2 runs 3Cx150Sq.mm Copper, 1Kv grade, XPLE armored cable IR value is more than 550Mohm @ 500V Megger) and load section Long time Overcurrent protection is triggers and trips the unit. We changed LSIG protection with new factory tested unit. Even then fault is persisting. Please suggest the possible causes

353

how to revers the direction of single phase motor

469

How much voltage we need to apply in 33kv cable during hipot test of cable

401

An impedance of 100 ohms resistance and an unknown inductance is connected across the capacitor. The resulting impedance is a pure resistance of 500 ohms ifω = 10^5 rad/sec. calculate the values of inductor and capacitor.

721

Slipring moter find external resistance

1 558

tell me about your project

1 707

Interchange 7 and 6 ,÷and× 36×7+4-7×3

1 695

Why GRR starts from 60% of motor speed why not less than 60%?

733

How to test transformer

1 662


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Un-Answered Questions { Electrical Engineering }

What happen when change order of CT in GIS feeder?

1177


what is meaning of 230volts ac 50hzs ac supply is it rms or maximum to getting ac 230v what amount of max voltage they will send

1541


how is positive, negative, zero sequence is happen.. how is effect on 3 phase system

1284


What are the advantages of hydropower?

654


WHY IL=IPH IN STAR AND WHY IPH=IL/1.732 IN DELTA? WHAT IS REASON BEHIND IT?

5584






Define what is power quality meter ?

659


what happend to DC shunt motor if its field winding insulation becomes slightly weak? will that motor can run on full load or not explain in detail. thanks

1158


I have been using an 600VA with 0.6 p.f UPS with my desktop which has 450W power supply unit. Can anyone explain how can this happen . Because the output of the UPS is 360W (600*0.6) (<450W)

1664


whether starting current is limited to rated current of motor through soft starting or it exceeds the rated current?

1036


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

4259


how to find out cable size if load is 2800 watts, 230 volts AC supply and load distance is 1800 meters

1087


My question is abt backlog.I had dropped one subject in my second year, and completed this subject in the 3rd attempt, so how many backlogs i have got?1 or 3?plz sujjest the answer as soon as possible

1591


According to conduit size which size wiring & how many wires can we provide wires in conduit & how can we select conduit size accordingly?

1441


What is difference between slip rings and carbon burushes?

13902


How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).

1712