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Engineering Interview Questions
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what is the use of providing earthing for tanks? i know for lightning we use earthing ? Here one of my ONGC project there is no need of lightning protection and there is no power connection near by tank in that situation also ONGC asking earthing for tanks but we didn't understanding why they asking earthing? is anybody tell exact answer?

 4 4376

what is the importance of signals and systems ?

ABC,

3 16336

WHAT IS ARROW DISPLAY IN TRANSISTOR SYMBOL DIAGRAM? IN NPN AND PNP BOTH?//

Bhel,

3 7439

If two Transformers are connected in parallel having impedance of 50KA in both transformers will the impedance increase or decrease after connecting transformers in parallel?

Posco,

1533

What is the formula for calculating impedance of transformers connected parallel at fault level 50KA?

 1593

How Can we calculate the rating of a cable?Show the formula?

Jindal,

2 5699

we have 2 O2/Comb Analyzers Servomex Model 2700 in service for one of the furnaces in our chemical plant. It is giving High Temperature Alarm. Checked Temperature and found it to be 800 Deg C whereas Set Point is 700 Deg c. It is strange why is temperature not at SP. Also response is 23 % with 21 % Inst Air and with N2 reading is not coming down. please clarrify this issuses very urgent

 1 3411

What is CVT and what is relation with wave trap?

 1654

why do we prefer VCB over OCB? what are the advantages of Vaccum Ckt. Breaker over Oil Ckt. Breaker?

 2 8387

Which test will be more severe for VCB?

CPRI, Reliance,

2213

what is the Transformer Impedence?How can calculate?

 1451

what is the different beetween kva and kwh?

 4 4917

What will be happend if we not ground CT secondary?

Enercon, Engro, THDC,

3 7100

Why is a dead weight tester so called by that name?

SGS,

1 2432

What does PCU means with respect to Dead Weight Tester?

SGS,

1 2580

Un-Answered Questions { Engineering }

How to calibrate Toxic gas detector?

1236

Explain the concept of segmentaion.

1695

what are the advantages and disadvantages of oil filled cables over XLPE cables

17998

What is a steam turbine diaphragm?

606

Define grashof number [gr].

700




What is a half-adder?

608

What is a base station?

681

Define what do you understand by reverse saturation current of a diode?

606

What is a good method of steam tracing large vessels?

686

Why is the study of gyroscopes motion required to learn aircraft applications?

639

we are having 15kw and 3kw motor both can run in same time , instead of using copper we are using ug aluminium cable , 35 sq.mm is suitable for its current carrying capacity..?

1310

idea uses the 1800mhz band with alloted 4.4mhz bandwidth. this band is divided into 22 channel(up link).how will operator divides these channel in to traffic channel and control channel. explain

1814

If VFD is On but no starting commond on it. so how many outpout voltages of VFD

678

What is the formula for converting litre in to pale?

598

ANY ONE USED/INTERFACED CITECT VERSION 6.0/1 OR 7.0/1 TO SIEMENS S7-300 OR S7-400 CONTROLLER IF PLEASE TELL ME THE COMMUNICATION STRUCTURE AND ADDRESS CONSIDERATION FOR DI,DO,AI,AO please mail the details lok_pallapolu@yahoo.com Ph:09247513753 hyderabad

1646

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