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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Difference between online and offline UPS?

11 20603

How to calculate earth flat size for 250 Kva DG and transformer?

Deepak Fertilisers,

8 27755

can we use HPSV LAMP in HPMV LAMP fixture ?and viseversa.

OPS,

5 10089

Why motor initial starting current is high?

Pennar,

9 52767

megger generates D.C. voltage while earth tester generates A.C.voltage is it true? I know for megger it is D.C generator but what about earth tester?

IOCL,

4 19998

What is the cause for a blown fuse in one phase of primery side(HV) of a three phase transformer( 4169v-460v) in the time of closing its supply breaker. There is no load on the secondery side of the transformer in this moment.

Novachem,

3 9537

iam using DM 3251 voltmeter(1 percent accuracy)for 11KV system PT ratio is 11KV/110V.can anybody explain what is the max and min voltage deviation.

1174

What is mean by Sub Synchronous Resonance(SSR)???

1 2883

Will sag depends on the Specific Resistance of the conductor?if not Why??????????

BARC,

2 3034

how to calculate the neautral earthing conductor size for a 500kva dg set.

2 7757

What are the implications when the power factor is is leading condition ?

1 1848

What is double delta conection in AC Motor? And can we done the double RPM of the motor by double delta conection?

vguard,

1 7884

How to control speed of DC motor with AC power?

vguard,

7 9437

why transformer is giving some humming noise .....?

Electrotherm, JSW,

11 21960

when the rheostat kept in minimum to maximum position in motors what will happen?

7 13272


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Un-Answered Questions { Electrical Engineering }

how dose servo motor works

969


In a single how much maximum current and watts using

1172


Can anybody just suggest about the scope of Electrical design with ETAP software?Just guide me?

2466


types of central Air conditioner plant?

1165


What is dc current source? Differentiate between ideal and non ideal current sources?

173






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1150


What is Tachometer used to measure?

218


Why you are switching off arc protection mcb when you are taking shutdown for lv board.

726


STATE WORKING OF VACCUM CIRCUIT BRAKER?

1018


What is a dominant pole?

172


Y phase plates are used in transmission line??? what is there need???

1928


What is the RME and explain the full form and what is the RME work?

1356


Difference between on line capacitor and Station type capacitor

1093


what is the efficiency of thyristor

643


how many current required for hypo test

966