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Engineering Interview Questions
Questions Answers Views Company eMail

suppose if oil in transformer is not used than what constructional change you will do,for insulation and cooling?

ABB,

2 6207

why dhyedration test required for transformer oil once in a year

1 4157

EHV current carrying parts need to have smooth finish,then how can a 245kv GIS with emery finish can run so long?

1897

what is meant by geosyntahtic system

Bhel,

1 5459

what you mean by vector group of a 3 ph transformer

1 3265

can transformer of different kvas be paralled

2 5112

what is the max working temperature of an oil filled transformer say of about 1500kva.

3 13330

oil sample dielectric test gives the insulation rupture voltage at 26 kv. is this transformer safe to be operated . The working voltage is 11 kv

2 4618

We have one 500KVA transformer. We have tested REF relay and commissioned. After one and half year, due to some ground fault in one of the DB circuit Transformer tripped by REF relay. What will be cause and remedy. Please advise?

1 5381

formula for incomer breaker size calculation of powerfactor correction unit

3 18939

lightning current is ac or dc..?????

7 9929

HARMONICS ARE ALWAYS IN INTEGER LIKE 2ND OR 3RD HARMONICS,NOT IN FRACTION LIKE 0.5 HARMONICS.....????????

2 4586

what is resonance in electrical circuit and its effect? where we get high resonance and low resonance?

1 3299

what is the formula for efficiency of francis turbine and generator for hydropower? what is best way to select francis turbine and generator?

HAL,

2508

what is reactive power (MVAR) and how it is control? how it is generate in powerplant?

1 15230


Un-Answered Questions { Engineering }

Give an expression for average voltage of single phase semiconverters?

1193


For a type a chopper (first quadrant), express the following variables as a function of vs, r and duty cycle  in case the load is resistive average output voltage and current?

1262


how calculate the bearing from two coordinates?

2272


Do you have idea about various methods of production of gears ?

1078


How delta connection in the primary of distribution transformer reduces harmonics?how delta connections reduces harmonics?Please answer me...Hope that question is correct.

2225


How do we find the rating of a transformer, if it got burnt badly.

1568


What is the control action?

1158


How will a tester be sure that He’s covered the entire functionality in his Test case and not missed out anything?

1931


what is machine tpm

2126


WHAT IS THE DIff Between candidate key and primary key?

1859


132/66kv sub-station procation ?

2270


plese send me the oces/dgfs sylabus and previous year question pattern of electrical engg.?

2313


WHERE CAN I GET THE PREVIOUS QUESTION PAPERS OF APGENCO FOR THE THE POST OF Tr.ASSISTANT ENGINEER(CIVIL)

3729


Please asked me How calculate DCS controller memory.

2785


Explain the types of satellite?

804