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 27473

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

Deepak Fertilisers,

8 36658

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

OPS,

5 13909

Why motor initial starting current is high?

Pennar,

9 63810

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 25900

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 13573

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.

2309

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

1 4705

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

BARC,

2 5627

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

2 12415

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

1 3362

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

vguard,

1 13035

How to control speed of DC motor with AC power?

vguard,

7 13784

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

Electrotherm, JSW,

11 31850

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

7 18752

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Un-Answered Questions { Electrical Engineering }

please give me all the Alarm .Trip ,Safety Relays & Conditions of UPS Systems mail me on ashokbabunhce@gmail.com

1845

Dear all i am kumaravel. now in chennai. my work is control and relay panel auto cad designing.up to 11kv to 400kv then question is i am improving my knowledge. i want some books name and auther are available for this C&R panel related. plese any one help me

1819

hi, in the event earth grounding is not available in a project, is there any other way to make the elcb work? fyi, i have an instant water heater (6.5kw) installed, however if there is grounding in the heating element inside the heater assembly, i will get grounded. thank you in advance to those who will answer my question.

2042

What are the main advantages of generalized error co-efficients?

1221

What is the efficiency during maximum power transfer?

1314

What is the working principle of servo motor? And explain it.

1976

What are safety device in vcb and acb?

3953

WHAT IS THE CURRENT CARRYING CAPACITY OF 2.5/3 CORE HI TUFF CABLE,WILL IT SAFLEY CARRY 8.6 AMPS OVER 120 METRES,CAN YOU ALSO ANSWER WITH FORMULA FOR WORKINGS OUT ,THANK YOU 3RDYR APPRENTICE.

3628

Safety of on line ups

2011

Best way to measure the Soil resistance of rocky soil, three probe method and four probe method

1991

What are the causes of unbalanced current on 34.5kv feeder Ia=0.05,Ib= 0.25, Ic=0.15 and In=0.27 prior to tripping current are balance?

1796

hi friends ,iam working as genset AVR service engineer in electrical field from past 2 yrs throughout india . i plan to shift in some other job without travelling in same field because i con't travel,i dont know what i do for that so please guide me what job is suited for me,how i can serch the job please anybody helpme iam totally confused

2074

please send 5yearje solved papers on my email himmatsinghnathawat@gmail.com

1981

TO CALCULATE THE RESISTANCE OF GRR OF HT MOTOR 400KW WHEREAS STATOR VOLTAGE 6.6KV AND ROTOR VOLTAGE 705V AND ROTOR CURRENT IS 346A.

5566

How to define Kirchhoff current law and voltage law along with simply examples.

1823

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