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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how to convert kw in to unit

5 5108

how does the harmonics enter into the induction motors?

1 2835

define briefly the function of an ac electric generator (alternator)?

1 3616

Hi friends I am a service engineer in electrical field i plan to shift design engineer in same field, so i request your suggestion for what software or course i want to learn ?

5 4715

WHAT IS THE USAGE OF Buckoltz relay IN POWER TRANSFORMER AND AND HOW ITS FUNCTIONS?

3 4130

How the PF control while running DG set with load

1226

why some time Railway Fan not Rotate,But after a small rotation by human then it rotate normally? Why?

4 4622

what is the relation between reactive power and power factor for the what is the limit of reactive power and power factor

1258

what is the difference between electrical & electronics?

JSW,

4 5919

Whot is the difference between MCB and MCCB.Whot is the selection critearea for MCCB and MCB for 63 Amp.

5 6667

How does flights get the neutral(grounding)

1 3191

Whot is the braking capacity for MCCB. How we select different braking capacity.

1 2655

For refrigerators the motor current is raised beyond its rating on both conditions when the voltage of the system is more(say 270v) than the rated voltage(220v) as well as when the voltage of system is less(say 160v) than normal voltageof 220v, why explain?

Electrical Tech, UPSE,

1163

length of 4 core cable 95mm from substation LV VFD panel to Motor at field approximately 150 meter. Motor stop and power has been isolated from LV MCC ( Substation )to disconnect Motor for services. After Motor completed service propose to reinstall and reconnect Motor Cable, found earth cable sparkling during touching at metal / motor body. Inspect by clamp meter found earth cable have current flow AC 1-2amps and all earth cable at MCC LV also have current flow as same value. why it is happen?

2 4247

what is ring system ?

Bhel, Sabic,

3 4258


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Un-Answered Questions { Electrical Engineering }

How to calculate cable size by using load.?? Any formula...

499


How to calculate pitch, gauge of winding wire, and No. of turns for 30HP, 3 phase, 4 poles 50Hz, 380V induction motors

1032


What is resolver and glass scale in CNC how they work?

1293


What is tranformer differtial?

989


Whether power factor should be high or low? Why?

249






what is v/f control in VFD?

652


1)How much current can a 3-1/2 core 100 mm wire carry? 2)What are the special cables required for explosion proof wiring? 3)In case you do not have coal and salt for earthing, how can you achieve good temporary earthing? 4)One horse power single phase motor is more likely to get hot than a one horse power 3 phase motor. Is it true or false, if true why? 5)What are the different types of soft starters for large motors?please explain?

3754


Fantio of tranformer

1269


How to calculate the time setting for star connection in star delta starter? For example 10KW 3PH Induction motor.

1682


What are the types of transformers according to the arrangement of iron cores?

239


what is the criteria for selecting fuse rating in 1phase, 2phase & 3phase welding sets?

985


When the relative speed between the magnetic fields of stator and rotor does is zero under steady state operation?

317


what shoud be strength and weakness to impress interviewer????????

1058


Explain and give me an example of a time when you had to explain some new procedures to your co-workers for quality service delivery, how did you go about it?

1028


what is the necessity of under ground cables ??

1183