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

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Engineering Interview Questions

Questions Answers Views Company eMail

how we can make the connection among the phones?

Motorola,

2 6705

Why OLTC(On Load Tap Changing)transformer is not recomended for improving voltage instability?

2 6396

which site/city in India has all three(thremal,Hydal and Nuclear)power generaton facilities?

2 5355

Why generating voltage is limited up to 22kV?

4 7909

How many 1.5 ton A/Cs can run on 7.5 kw generator (diesel)?

2083

1. A bomber drops a bomb from an aircraft flying at 2000 km/hr. at an altitude of 7km. The speed at which the bomb will strike the earth would be

KNJ,

1963

WHAT IS TEAM SIZE IN CONSTRUCTION WORK

2 6418

While connecting bulb in Series/Parallel,there is any difference in glowing

3 6264

When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<

Lupin,

2215

Why the meters sonnected to metering core of CT are not damagedon event of a fault??? Explain the phenomena??

Schneider,

1 5472

Does the isolator has a making capacity????????

2 5496

How to determine earth fault level to set relay for a normal distribution system of 11 kV , 100 A load????????

TCS,

1 4305

why is the number of turns different in current and potential coils of wattmeter..?

1 3690

Why the Transformer connection is changing in different transformer?(Like Star & Delta,Delta & Delta,Star & Star,Delta Star) From that connection where it is used?

2 7142

1)What will happen when 240 VDC supply is connected to 240VAC supply(DC supply +ve is connected to phase of AC supply & DC supply is to neutral of AC supply). 2)Also what will happen when 240 VDC supply is connected to 240 VAC supply in reverse polarity as of Sr. No 1.

2 5000

Un-Answered Questions { Engineering }

HOW TO CALLICULATE RESITENCE,REACTANCE AND IMPEDENCE VOLTGE OF TRANSFORMER 13.33 KVA 144/240 VOLTS 93/56 A WITH FORMULA

2038

What will cause if you run your engine in critical RPM continuously?

2340

WHAT IS THE DIFFERENE IN ACTION OF MCB,MCCB,RCCB

2477

Can condensate control in a reboiler cause water hammer problems?

1211

the water is flowing through a velocity of 1.5m/s in a pipe of length 2500m and dia 500mm. at the end of pipe a valve is provided. find rise in pressure 1. if the valve is closed in 5 seconds. 2. if the valve is closed instantaneously. take value of c = 1460m/s, pipe to be rigid and bulk modulus of water - 19.692x10' n/sqcm

2429

What is packing Factor ?

1503

What are the limitations of Kirchoff's laws?

1648

What does the catalytic converter on an automobile really do?

1095

what are the tests comes under the type test, what tests comes under routine tests.

1520

Why need 3phase machine double earthing?

1833

how many tonnes equals to one cubic feet?

1712

What is the purpose of cost accounting?

1172

how to nfind out the specific gravity of sand.aggregate,water please help...

2281

What are three basics stitches in weft knitting?

Define pinch-off voltage

1183

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