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Engineering Interview Questions
Questions Answers Views Company eMail

Overall Heat transfer coefficient.

3 3979

what is the difference between tsp & tower

 1707

Where is 2 phase supply used commercially?

NTPC,

3 7733

what is the type of earthing

 1772

why the rating of dc generator is in kw where as rating of alternator is in kva?

 3 23795

HOW DISTANCE PROTECTION IS DONE IN EHV TRANSMISSION LINES? WHAT IS THE BASIC TECHNIQ OR FUNDA USED BEHIND THIS ? SPECIALLY EXPLAIN?IMPEDANCE METHOD.

ABB,

2 6236

dear all, in motor operation , motor is of 100 hp and bimetal relay setting is 130 amp, if relay is getting tripped on 120 amp balance current what can be the reason? Relay is newly replaced. I dont know but is there any frequency effect in thit case? Can frequency variation affect bimetal relay operation?

 1 3050

how the percentage impedance affect the transformer loading when connected in parallel.?

 1 4016

WHEN THESE TRANSFORMERS WINDINS CONFIGURATION ARE USED? SPECIALLY EXPLAIN REGARDING STEP UP AND STEP DOWN KEEPING IN MIND.AND REGARDING LOAD ALSO. a.star to delta b.delta to star c.delta to delta d.star to star ALSO EXPLAIN WHY V USE 415/415 TRANSFORMERS IN TUBEWELLS?

ABB,

1 3204

.if the vector group of two transformers is not same n tey r connected in parallel operation then what will happen?

ABB,

2 5045

PLZ EXPLIN ABOUT CLASS PS CLASS CT .WHY THEY R DESINED AND FOR WHAT PURPOSE?WHY OTHER CT CANT BE USED AS PS CLASS CT? EXPLAIN IN SIMPLE LAUNGAGE IF POSSIBLE PLZ GIVE CIRCIT DIAGRAM?EMAIL-RAJ_SINGH_0376@SIFY.COM

ABB,

1718

what is meant by motor startup supervision & motor load jam protection ?

ABB,

5357

what is meant by trip circuit supervision & directional or non directional over current ?

ABB,

1 5094

what is isdn.

 5 5182

how can i replace annular plats in tanks

 1492

Un-Answered Questions { Engineering }

sir iam vinod kumar i have done B.TECH. in mechanical engg in 2007 i want to choose career as section engg.please give the information about coaching institute.

1432

Without air traffic control, what is the minimum descent rate you can descend the plane?

619

Which are the main wings of the space application centre ( sac ), ahmedabad?

422

If anybody have technical test papers for HPCL. Pls, mail me on akanksha417@yahoo.com.

1493

Explain how you can turn off the display for dimension in CAD?

719




what is formula to cal cute earth pit numbers and size of earth strip used in earthing?

1802

are BS, BSP, BSW threads same?

1910

Define stanton number [st].

610

Discuss about the costumes of Gupta period.

5

what is Insulation monitoring device. where it is used? (in switchgear room or control panel or in field equipment)

1680

how to find out the name of the users who are currently working starting with the same characters in unix os

1475

Consider three heater bank connected in 3 phase star with neutral.Each heater bank connected in each phase.So each phase get 230 volts supply.my question is,during balance condition, current flow in neutral or Not

1201

what is the voltage rating of chiller unit sensors

2300

what happen when power factor of 2 parallely operated transformer become equle?

1715

WHAT IS THE DIFFERENCE B/W LUBE OIL 20 W 40 AND 20 W 40 OIL.

1583

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