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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Dear Mr B C pal...Can you plz. put some light on principle of operation of Z-Ct in conjunction to its use with 1Cx1000Sqmm HT Cables & Directional Ground Fault / Over Voltage Relays...Regd..Parag v K 9899115632

2716

Explain about 3 phase motor fault current calculation with examples?

QTC,

2886

Initially motor starts with star connection ,after few timing changes to delta connection, why the motor should run continously in star connection,it gives high torque & low current?

3 9418

what is effect of reverse c.t connection on metering.

Cushman Wakefield,

4 15835

What are the advantages of D.O.L Starter in 3 phase induction motor?

4 9042

while running ,synchronous generator is being turned off.what will happen to the current flow??

1 2617

What happen if field ckt is open when a sailent pole alternator connected to infinite bus

Bhel, Nilkamal,

3 6590

without name plate detail of blower how we can find out the HP & Rpm ? the input voltage is 230v single phase

1 3973

What should be distance required in between two phase of HT cionductors in open area??????

3 10042

For a DY11 lighting Transformer on primary side whee to connect fourth lead? from nuetral or from ground?

Sabic,

3 6135

what heppend if we are connected u1-v1-w1 as a star point in the place of u2-v2-w2 in power genration

2191

Dear sir, By which formula u can calculate for a particular kv line there is a range of mw.

2092

R u say ,that is there is any flux in your room.

1 4832

In which connection the voltage will be more , in star or delta connected motor?

3 6706

why we do occ & scc test in transformer ?how we can do it ?

2 12232

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Un-Answered Questions { Electrical Engineering }

hi, i have 3x200KVA and 2 x 80KVA UPS with battery bank of 150AH 68Nos. and 100AH 204Nos., i need to install AC either ductable or PAC type, so can you help me to calculate heat load and capacity of the AC to install.

2698

How Diesel Generator start ?

2376

There is any especial requirement for motor to drive through with VFD?

2563

Difference between RCCB, RCBO and ELMCB.

4042

hi i have applied for lic of india south cenrtal zonal ,hyd. i didnt get hall ticket till now.let me know how can i get form internet

1970

How to know any size of cable if there are not written on cable? Answer must be theurical not by experience.

2091

Why delta star trformers are used for lighting loads?

1155

in a solar power plant,we are going to step up the voltage 350V to 33kv, and to 132kv GSS. i want to ask that if it is possible that 315v/33kv is not possible because we also use 315v/11kv. or it should be 415v/33kv? is it effects generation or losses? the second question is-generation is depends on LV winding? or LV winding design for generation voltage?

1688

what are the reasons of CT circuit faulty in busbar protection scheme?

1438

How can we convert 11 kv to 440 volt without using transformer ?

1404

Define transfer function?

1119

Define super node?

1159

IN dc capacitive reactance is??

1358

what is the difference between active power and reactive power and apparant power in practical as well as theoritical

1897

what are the advantages and disadvantages of speed control of 3 phase induction motor by varying frequency explain with drawing

2634

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