1. Categories >> Engineering >> Electrical Engineering
  2. Suggest New Category
Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Difference between online and offline UPS?

 11 23811

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

Deepak Fertilisers,

8 33357

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

OPS,

5 11857

Why motor initial starting current is high?

Pennar,

9 59431

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 23931

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 12289

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.

 1739

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

 1 3574

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

BARC,

2 4265

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

 2 10750

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

 1 2536

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

vguard,

1 11676

How to control speed of DC motor with AC power?

vguard,

7 11341

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

Electrotherm, JSW,

11 27468

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

 7 16169

Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

Dear All, I am new in construction company , my boss ask a question at time of interview , If we have 60MW generation and Single Power Transformer step-up we have. if CMR 50/60MVA , ONAN, ONAF respectively , is it sufficient or not ? for that much power to transfer,

1208

any earth foult trip the relay but in welding time not trip by earth foult

2718

I have doubt that the supply HZ (very low or high than rated ) may affect the power factor. is it true. ?

1208

briefly explain principle of resistance welding

1406

what is meant by flywheel and its role in retardation test

1955




mention hazard experienced during installation

1523

george phenomenon of synchronous machine

6940

What Is HO factor in power selection

1546

If ROC does not lies inside unit circle,then ? a) Fourier transform converges b) Z transform converges c) Hatly transform converges d) Colpit Transform converges.

1827

when 20hp 3 phase motor start no load condition in star or delta connection.find current and write formula.(tariq)

1517

3phase cable calculation formula by motor load

1003

is it value of power factor is more than unit. whats effects in the source supply

1589

Name the types of motors used in vacuum cleaners, phonographic appliances, vending machines,refrigerators, rolling mills, lathes, power factor improvement and cranes.

681

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

1770

what is resver in electrical enginnering with answer

1190

For More Un-Answered { Electrical Engineering } Questions Click Here