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

Between Star-Delta & Star-Star Power transformer which one is efficent for Earth Fault?

10 17077

Why we are use 11KV / 22KV / 33KV / 66KV / 110KV / 230KV / 440KV this type of ratio. why cant we use other voltage ratio like 54KV / 99KV et.,

College School Exams Tests, Hino, ITC Infotech, Reliance, UPRVUNL,

8 32066

pls send me the 10 years technical question papers of NTPC AND BHEL

Bhel, NTPC, ONGC, UCE,

15 24095

Pls send me the 10 years technical question paper of Jindal steel power to my email id

Jindal, Jindal Steel and Power, Tata Steel Limited,

12 19471

From the point of view of accuracy in the Measurement of Electrical energy should we select a potential transformer or a capacitor voltage transformers?.Kindly support your reply with reason and justification.

1 3990

HOW DOES ONE SELECT A TRANSFORMER PHASOR GROUP IE, WHETHER A STAR-DELTA TR OR A STAR-STAR OR A DELTA-DELTA, ETC. TRANSFORMER IS MORE SUITABLE FOR A PARTICULAR KIND OF LOAD OR WORKING CONDITION???

KPTCL,

3 7844

What is the secondry voltage of 420kV Current Transformer , the rated current is 2600A

6 8276

1. what is the power factor and whatis his losses 2. what is the working procedure of 51RNB AND 87 relay

ABB,

3 6402

how to calculat suction head in centrifugal pump?

IOCL,

2 10473

What is the difference between RMS and average value

CEERI, HPCL,

5 38476

When geneartor is running in poor lagging side power factor its excitation current increases then it is running in improved lagging side.Kindly tell me when gen is running in leading side what will happen

3 6714

Can any body tell me about Hi-pot test, and why it is necessary and its procedure of testing

6 9973

Can any body tell me about partial discharge test, and why it is necessary and its procedure

1 4473

Why not implimenting power factor in Diesel generator

HP,

6 11179

What is difference between Overall heat transfer coeficient & individual heat transfer coefficient

CVSR, NFTDC,

4 24990

Un-Answered Questions { Engineering }

An active element is one which a. Supplies energy b. Absorbs energy c. Supplies energy and convert energy from one form to another

2083

In a gas over oil actuator, after the opening/closing of valve, how the gas is vented out? How does the hydraulic/gas circuit function?

1842

Explain what does the arrow head represent in the schematic symbol of a p-n junction?

1160

We have studied about many techniques for finding the stability of system, ROOT LOCUS, ROUTH, BODE PLOT, POLER PLOT etc. In these which is used where. what are the difference among them... PLZ tell me.......

2212

Draw vi characteristics of pn junction diode.

1129

why transformer tank is in rectangular shape what happen when it is in step shape

1465

1.what is meaning of curve into a mcb. 2.what is basic reason changing of curve

2014

Explain the following and how these are working with PLC Unit 1 I/O Module Card 2 Adaptor Card 3 Ribbon Adaptor 4 I/O bus 5 I/O Devices

1639

What is the output power of a BTS, in dbm &watts if trx=2+2+2... if trx=4+4+4..

2649

What is welding?

1071

what is the effect of throttle pressure on turbine efficiency?

2134

Material calculation of cm 1:6 for 1sqm

2071

Write a note on materials used as a fuse element.

2142

What is meant by current commutation?

1140

What do you understand by ductile-brittle transition temperature?

1029

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