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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

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

1031

Types of circuit breaker

1 1853

Different types of relay fault which phase sequence??

908

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

1092

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

1260

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

1137

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

807

how to revers the direction of single phase motor

962

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

848

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.

1422

Slipring moter find external resistance

1 1513

tell me about your project

1 1637

Interchange 7 and 6 ,÷and× 36×7+4-7×3

1 1628

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

1702

How to test transformer

1 1713

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Un-Answered Questions { Electrical Engineering }

How to calculate capacitor bank value to maintain unity power factor with some suitable example?

1143

what will happen if there is a voltage leakage or current leakage in an electrical train

2020

How to know Resistance and Reactance value of main and aux winding of single phase capacitor start capacitor run induction motor to find capacitor value?

2044

What do you mean by cogeneration? What its working principle?

3206

In all analog voltmeters or ammeter showing some small size symbols. as well as a star and in star 2no. digit, resister symbol,and other. what is that's meaning ?

2172

what is Insulation monitoring device. where it is used? (in switchgear room or control panel or in field equipment)

2158

How does an oscillator differ from an amplifier?

1156

why do we lay up the core of a cable?

2014

why it is not advisable to run low rating (19KVA) DG sets in parallel for long durations even though they are provided with droop ckts (QDC)

1906

What is the use of iron core in a transformer?

1135

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

1901

What is the control action?

1146

Transmission voltage is kept 11KV,33KV,66KV,132KV,220KV due to form factor. What happen to 400KV and 765KV transmission voltage?

2171

How does HT work & Voltage required?

2269

What are safety device in vcb and acb?

3878

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