1. Categories >> Engineering
  2. Suggest New Category


Engineering Interview Questions
Questions Answers Views Company eMail

how we can make the connection among the phones?

Motorola,

2 5464

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

 2 5330

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

 2 4121

Why generating voltage is limited up to 22kV?

 4 6333

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

 1625

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,

1476

WHAT IS TEAM SIZE IN CONSTRUCTION WORK

 2 5332

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

 3 4739

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,

1671

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

Schneider,

1 4175

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

 2 4406

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

TCS,

1 3510

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

 1 2812

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 6068

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 3984

Un-Answered Questions { Engineering }

Explain the method of determining maximum differential pressure during hydro testing of shell and tube heat exchangers?

597

features of hbc fuses

1934

What is the perfect face shape? Why it is called so?

5

why is the column design?

1822

What is synchro?

646




Respected sir please send placement paper of bpcl

2142

List the advantages of star-delta starter with induction motor?

607

Define back stitching?

1

What is K-rated transformer? What is the use of it? What can be the size(pls provide calculation if possible) of K- factor transformer for 550kW,690V motor operating with drive (VFD)?

1792

What are the faults that might happen in SCADA ?

1873

What is the use of control cable?

680

sample & previous year papers of sta & je (electronics 0

3339

What is Harmonics how it is produced and what is the method to control the same

1761

write down the formula of cable size in RM if current is 50Amp.

916

what is the difference between pre-emphasis and modulation?

1600

For More Un-Answered { Engineering } Questions Click Here