Electrical Engineering Interview Questions
Questions Answers Views Company eMail

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

476

Types of circuit breaker

1 782

Different types of relay fault which phase sequence??

435

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

576

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

686

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

558

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

325

how to revers the direction of single phase motor

441

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

370

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.

682

Slipring moter find external resistance

1 527

tell me about your project

1 661

Interchange 7 and 6 ,÷and× 36×7+4-7×3

1 652

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

686

How to test transformer

1 625


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Un-Answered Questions { Electrical Engineering }

Initially, when the input is not equal to the output — what type of response is this?

632


in the case of 6.6kv motor starter combination contain fuses on it VCB. but in 11KV motor starter combination Fuses are not using in it's VCB why?

1782


what is the standard duration after failure EB power

1318


What are the uses of lead compensator?

574


why we take movement of rotor always in counter-clockwise direction in 3-phase induction motors?

1483






What are the advantage of free wheeling diode in a full wave rectifier?

616


what are the difference between PLC and embedded

1616


Why armature rheostat is kept in maximum position?

609


Why L.T.Cable voltage rating is 1.1kV,where as system voltage is 0.415kV?

1847


how to identify the cable quality and what is flame proof cable

1633


tell me about eletrical contractor

1498


What is the count of hvdc transmission lines in india?

598


How can we decide cable size from HT panel to Transformer? Please give you reply with some examples.

1750


why we used dc supply for field in dg set

1887


Please explain the following and how these are working with PLC unit 1.I/O Module 2.I/O Device 3.Adaptor Card 4.Ribbon Adaptor 5.RS 485-FC

1144