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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Difference between online and offline UPS?

11 26713

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

Deepak Fertilisers,

8 36159

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

OPS,

5 13534

Why motor initial starting current is high?

Pennar,

9 63164

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 25526

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 13310

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.

2214

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

1 4500

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

BARC,

2 5405

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

2 12173

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

1 3214

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

vguard,

1 12836

How to control speed of DC motor with AC power?

vguard,

7 13337

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

Electrotherm, JSW,

11 31049

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

7 18263

Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

Why we are going for converter transformers for DC drives application instead of distribution transformer?

1954

Instrument connected to a single phase supply

1656

nwhat are the main Components of servo motor?

2036

how to carry out Magnetizing Current Test on Distribution transformer and what purpose we are doing this test. why transformer rating in always in KVA ? what ispositive, negative, zero sequence impedence? How ElCB tripping if Neutral touch with ground Why AC & DC capacitor are use in UPS ? why motor rating in KW? how to syncronize two dg sets

2145

what is the main difference between power devices and signal devices

2147

What are the various kind of cables used for transmission?

1055

how to design coil turns ?

1930

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

1404

What will happen if the armature resistance is in minimum position and the field resistance is in maximum position while starting the motor

1519

what is level 2 automation?

3111

234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,

1990

write a program that prints prime numbers from 1-20 in digonal form

1963

how to synchronize 3 phase slip ring induction motors of different ratings.

2241

What is the effect of pi controller on the system performance?

1072

Why squirrel cage motor can only use with low starting loads ?

2008

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