Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Satellite Systems Engineering (106)
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Engineering Interview Questions

Questions Answers Views Company eMail

11 kv metering is done in my factory.Meter show PF 1.000 but kvarh lag&lead show 24&94 respectively & Avg.PF is .956 .? is what i do for inproove my PF to 1.000

3 5748

how to check capacitor in general

1 4175

what is the difference between Ith & Iu rating in MCCB. Particularly on SACE ABB Circuit Breaker?

Siemens,

2 18312

I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?

Siemens,

2314

if a member of mass 100 gram travelling with 10 m/s hit another body,and the final velocity is 59 m/s.what is the mass of second member

NTPC,

4 6254

How to calculate transformer capacity requirement for a project site?

ABB,

5 24317

Difference Between B Curve & C Curve in MCB.

3 64841

which fit is this 177-S6?

2072

If any changes done in the process of production what that is called.

1893

What is the difference between sensitive earth fault and restricted earth fault in power transformers?

4 52802

which INDIAN STANDERD in Mention the earth test value?

1 4220

what is the use of piston rings in the engine used for a generator...........

2195

what happen if drive input fail momentry at 48.5 HZ frequency?

1926

what is the reason for drop in freq. from 50 hz at generating side to 49.8 ,49.6 etc.at receiving side???

2 4544

Write the fetch cycle and execute cycle for following instructions:JMPNZ (jump to the given address if the accumulator not equal to zero) RET(return from a subroutine) ADB (add the contents of register B to the accumulator and save result in the accumulator).

IBM,

2213

Un-Answered Questions { Engineering }

A very strange fault i cam across today,that i never experienced not studied before, i need an answer for this. Phase to phase or line to line , L1,L2 & L3, voltages are 490VAC, but if i use line to ground , its again 490 VAC. . . whats the fault and theory behind of it?

1931

How to identify the start and end of 3phase 12 lead motor if U1, U2, etc numberings are lost or erased.

2150

How to select lightning arrester for line trap? What are the criteria?

2089

how to calculate spacing rod in column

1958

How to test lightning Arrester?

906

What is the difference between E1T1 Card & RRI & FIU.

3077

Is Diesel staorage tank ( 800 litres) cleaning procedure is available with any body

2009

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

2665

Explain how to manufacture the cmos inverter?

1031

what is instrument philosophy

2263

How to work definite,over pluxing,revers power,OSR relay

1797

Question asked in prototech first round

1435

difference between sand casting and shell casting

1737

How would you handle if your co-worker is not co-operating with you?

1182

why need of new operator in java why not in c++

1877

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