Electrical Engineering Interview Questions
Questions Answers Views Company eMail

can we run the home fan both clock and anticlockwise direction

1 3244

in star connected 4wired transmission system ,what happen if the neutral is grounded . or not grounded. which is significant and y

2 3689

if we have to design a small transformer of rating 1 kva or 1 mva , how can we design it?

1 3726

What is highest size of HT motor like 11 kv or 33 kv,and how to make it 750 rpm.i think the size will be very big.any idea ? pl. reply..

ABB,

1512

Is it required to lay 2 runs of GI wires along with armoured cables from one power DB to another Power DB?

1484

Is it required to lay GI wires along with GI/MS conduits from one point to another point though separate earthing cable is conncted from DB to Socket?

1539

Is it required to lay 2 runs of GI wires along with armoured cables from one power DB Machines of higher rating?

1564

Is it required to do earthing in 2nd shop if earthed armoured cable is laid from 1st shop ?

1441

What is the max value of neutral current that can be allowed in system?

1712

What are the disadvantages if neutral current exists in grounded star transformer distribution system?

1 4793

What will be advantage if we put some load in neutral of grounded star transformer & loadshortcircuit current,rated current of cable & MCB with example?

1422

What will be the size of cable required for 5.5 KW motor ( Full load current 10 Amps approx.), Starting current with DOL is 120 Amps. Aprrox. Short circuit current with LLLG fault is 2000 Amps Approx.

2 25311

What is the difference between shortcircuit current, rated current of cable & MCB with example? What will be the size of cable required for 5.5 KW motor (Full load current 10 Amps approx.), Starting current with DOL is 120 Amps. Aprrox. Short circuit current with LLLG fault is 2000 Amps Approx.

1591

What is the difference between LT CT & HT CT?Can we use indoor type transformer as an outdoor type or vice versa?

Bhel,

2 10185

Where can I get CPWD electrical specifications & Shedule of rates? Please help me

1816


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Un-Answered Questions { Electrical Engineering }

What is error of a measurement?

629


What is the effect on 3phase induction motor if current setting knob of DOL kept at minimum current?

3160


I WANT BHEL PREVIOUS QUESTION

1837


What are the three constants associated with a steady state error?

727


What the main causes of transient interruptions on Over-Head Distribution Lines?

1596






how to measure the transformer resistance values(dyn11)?and howmuch the minimum value?

1671


What is the difference between AC and DC injection methods for rotor earth fault protection

1694


On what basis do you decide the ONAN (Oil Natural air natural) or Dry type transformer for a project?

1172


solar inverters was not connected to the nuteral link .this nutwral possible to any other systems

1357


what is the difference between Central Battery System and UPS in applications and uses? and why UPS suitable for Computers and central battery for emergency lighting?

9706


WHY THE DIMENSION OF TWO SAME RATED MACHINE IS DIFFERENT ?

1511


WHAT IS THE MEANING OF BALANCED / UNBALANCED IN STABILIZER TYPES.

1976


In India the supply voltage is 230 volt A.C. During the negative half cycle phase becomes neutral and neutral become phase? or what will happen during negative half cycle? how the electrons flow during positive and negative half cycle?

1503


calculate external resistance values to add to the rotor of a slip ring induction motor. STATOR- 415 V, 3 phase delta, 1100 A, 50 Hz, 1490 rpm, pf 0,86 ROTOR - 660 V, 590 A, 50 Hz. STATOR current at each steps STEP1-600A,STEP2- 800A,STEP3-1000A,STEP4-1100A.

3077


How to determine stage of Automatic Power factor controlling Relay(Apfcr)?

1713