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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is transformer?

2 4719

why DC is not generated instead of AC?

4 7720

Name the instruments which run on DC?

2 4029

How may I get the maximum current capacity for a particullar size Alluminum or Copper cable if there is compulsion to use?

1921

How to decide whether A / B / C / D curve type MCB should be used?

2298

WHY IS wet surface used for grounding???

2 4949

how to find insulation resistance of a motor(415v) by theoretical formula??

2 7740

what is the diff.between neutral and earth?

4 6905

why the iron chains were hanged at the back or front of the trucks earlier which were touching the earth?

2 4465

Is there such a frequency as 440v 50Hz?

1 3782

My switchgear busbar is rated at 2000A and just imagine the actual load on busbar is 1000A. From that busbar there are 10 outgoing feeders. Now the question is will the load be 1000A on each outgoing feeder or 100A per outgoing feeder. 2nd thing how do i calculate the load on individual feeder. Thanks for your time. Please provide some clarification on this issue.

Alstom,

1 5347

hello friends.. I have a doubt regarding the operation of dc machines.. I studied in a text book that a dc machine can be used as a generator and as a motor.. is this possible? If so,please send me the info about this topic.. you can also send your info to my mail.

Bhel, CVL,

2057

what is mean by dual digital protection in the relay field?

ABB,

1938

HOW TO CALCULATE GROUND FAULT CURRENT IN 430V 4000AMP AIR CIRCUIT BREAKER?

2 6052

draw a circuit diagram connecting transformer OLTC- RTCC- VCB-Marshalling Box otherwise Explain in words

1 23129


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

What happened when voltage will half value of current ...

1615


Is phenomenon of resonance is harmfull fr the machine? if not or if yes please explain it?

1929


In which of the following case, the rotating magnetic field is reversed? A regenerative breaking B plugging C dynamic breaking D forward motoring

1970


From past few months I am getting lagging pf even though sufficient capacitors used in circuit. Where is the problem pls answer

1441


When calculating the speed of a rotor required for a particular frequency of synchronous generator we use the equation 60f/p Is this p is the number of pole pairs of rotor & do we consider the number of pole pairs in the stator is 1?

2009


What is the maximum breakdown voltage of 11KVA and 66 KVA power line and how it is calculated?

2290


transformer spections :: input voltage 0-110-230v; output volage 0-10-12-14v; amp=3A using CRNO CORE, capcaity=50VA primary turns = ? ; secondry turns =?

2097


whatare the disadvantages occur,if the form factor of transmission will not be equal to 1.11

1866


What are the properties of a resistor?

1113


In our plant we have installed new MCC with ELR and CBCT which is detecting some leakage current in the system but it leading to some confusion when to check that in which feeder which is drawing current we put off the whole panel itself but still CBCT detecting some leakage current so can anybody ans me , where i am going wrong or how to detect whether its actual leakage or CBCT malfunctioning.

2259


what is different between relay and plc?

5696


What is the tension required for the 25000 CFM AHU belt

2487


how to select automotive wire by mathematical equation with given current, vlotage and resistance

2358


What is the drawback of static coefficients?

1619


What is meant by harmonic distortion?

1119