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 6701

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 5349

Why generating voltage is limited up to 22kV?

4 7906

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 6415

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

3 6260

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 5470

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

2 5495

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

TCS,

1 4304

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

1 3686

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 7139

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 }

Please mail me the Satyam Computers (Mechanical Division, Satyam Technologies, Hyderabad & Bangalore) question papers on Design & strength of materials. Will be very thanksful.....srinivas_1704@yahoo.co.in

2073

For a washout valve why are two gate valves required in normal practice?

1194

What is servo motor and what are the applications of servo motor?

2748

High speed gear is obtained in the case of sliding mesh gear box when a) Motion is transferred through the clutch gear to lay shaft gear b) Main shaft is coupled to the clutch shaft c) Smallest gear on the lay shaft is engaged d) Largest gear on the lay shaft is engaged

1346

What will be the impact on motor performance if a LT motor is rewound with changed motor winding data as given below:- Original winding data: total 04 wires = 02 wires of 17 SWG + 02 wires of 16.5 SWG. Changed Winding data: total 03 wires of 15.5 SWG wire size Motor rating: 160KW, 740RPM, 415V, ID FAN application. Normal Running Current = 95% of FL Current.

2133

please send the last 5 years {{{JUNIOR ENGINEER - ELECTICAL, ELECTRONICS RRB CHENNAI}}} TECHNICAL question papers TO MY EMAIL ID pushpapappu@yahoo.co.in

1961

What are the error values can accepted in flow transmitter calibration?could u give any formula for this?

1958

Define pivot?

Following test should be conducted to find out relative polarity of transformenr terminals A no load test B back to back test C phasing out test D none of above

2280

What is Kalamkari.

If one tertiary phase i.e. R,Y or B is earthed of a loaded type tertiary delta connected (Without load)of a power auto transformer, what is its advantage/disadvantage?

2127

Differentiate between hot and cold working of the metals.

1230

What is frequency factor in massflow meter? When using frequency output?

1923

What are the fibres used in Textile Industry?

What is current & voltage ? Voltage perform at any load without current or not?

1932

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