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Engineering Interview Questions
Questions Answers Views Company eMail

Why does a fractionating column does not catch fire even though it operates at temperature greater than 400 degree C ?

ONGC,

5 11441

what is Real power and Reactive power ? what is difference between them ?

 5 6505

why DC motor body is plain cover but AC motor is different like finse?

 2 4785

how will be power factor while using the resistive load and Capacitive load?

 3 4566

what is ups Paralleling? how is load sharing at that time ? what are the things we have to note that time?

 1 3586

how is working the auto transformer?

 1 4283

how is working the APFC when varying the load?

 1 4866

what is static switch where it can be use?

1 2883

what is the cable size we can use for 11kv and 33kv ?

 3 10022

What is rotating transformer? Which machine is used specifically as rotating transformer?

TATA,

3 6543

If the damper winding on the rotor of a synchronous motor is removed after starting what will happen?

IOCL,

7 12398

What is the working principle of VFD

HCL,

3 18857

Difference between DOL starter & star Delta Starter? And where the Dol starter used upto how much HP and whereas Star Delta vice versa?

 3 12058

How to take vector group test of a transformer? Suppose we dont know the vector group of transformer, how to check its vector group through test? I have 3 transformer DYn11 & DYno& Ynd11, how to confirm its vector group?

 1 4835

how to calculate single phase motor efficiency ?

Bhel,

1523

Un-Answered Questions { Engineering }

sir, please send HPCL INFORMATION SYSTEMS OFFICER SYLLABUS WITH PREVIOUS QUESTION PAPERS

3616

Is there a white dye?

1

Why is a synchronous motor always star connected??

2116

What is the effect on power factor, shown by a trivector meter; incase of reverse phase sequence. If the power factor of a system is lag what meter will show in case of reverse phase sequence connected to the meter. and What in case of lead.

1821

What are the types of control system?

638




Is a 300w induction motor used in a food processor as powerful as a 1000w DC motor.

1743

What were the most energizing/enjoyable aspects of your job in this given period?

5832

What are the causes of L.O. high temperature?

1354

what are various part found in vapour absorption machine and its working

1879

hi sir/madam i need placement paper of last years of DRDO in chemical sream...... send me the question paper as soon as possible on my email address praveen.zone@gmail.com

2362

Hello Guys !! i want to rrb section engineer electrical(signal) previous model papers? any body help me?

1434

Who invented the four stroke engine? According to you which one is more efficient, four stroke engine or a two stroke engine and why?

632

What should be the voltage between Neutral and Ground in secondary side of the step down transformer (230 V to 110 V) with no load condition?

1619

Will a steel cable become longer if it is heated while under load? Explain

652

what do u mean by compensation n pid tunning?in pid tunning what you tunned?is it possible 2 tune p i d

4378

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