Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Difference between online and offline UPS?

11 18918

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

Deepak Fertilisers,

8 23628

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

OPS,

5 8871




Why motor initial starting current is high?

Pennar,

9 46732

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 16852

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 7119

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.

798

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

1 2408




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

BARC,

2 2407

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

2 6164

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

1 1357

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

vguard,

1 5235

How to control speed of DC motor with AC power?

vguard,

7 8063

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

JSW, Electrotherm,

11 18755

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

7 10549


Post New Electrical Engineering Questions






Un-Answered Questions { Electrical Engineering }

WHAT ARE THE EFFECTS OF SERIES RESONANCE AND PARALLEL RESONANCE ON THE CIRCUITS PARAMETERS?

715


what is the transmission loss for electrical supply? specifically a large shopping complex where the grid is half KM away, what will the % of transmission loss? is there any transmission loss for captive unit generation for above set? thanks

719


how to select energy meter? have any calculation?

1418


In Which vector group power transformers are mostly manufactured?

1037


I have one ct of ratio 3000-2000/1 Amp its knee point voltage mentioned on name plate is 500-333/30mA-50mA at Vk/2. in secondary box there is three terminal named 1S1, 1S2, 1S3 then on which terminal obtained the knee point voltage ie 1S1-1S2 OR 1S1-1S3 & also specify the knee point voltage for the ratio 3000 from name plate.

1008






what shoud be strength and weakness to impress interviewer????????

655


plz send me the procedure and syllabus for mseb exam

2450


Why AC current leads voltage in capacitor and how?

697


While HT line put on to activate ACB in low tention panel VCB tripping instantly.why it happens

709


what is the difference between c power and U power acb breaker

1304


How can I calculate the Mega watts required to run a plant having many electric motors and other electrical components.

774


HOW CAN YOU CALCULATE PRACTICAL EFFICIENCY OF A ASYNCHRONOUS INDUCTIONMOTOR OF 7.5KW,& MOTOR IS RUNNING WITH AVOLTAGE OF 410 VOLTS,& TAKING CURENT OF 13 AMPS

591


8. A DYNAMOMETER TYPE WATTMETER RESPONDS TO THE.......

5630


what is The difference between national electrical code and I.S.Code (electrical) and what is the value of NEC in electrical engineering field

648


size of condotory fron voltage level

811