Electrical Engineering Interview Questions
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when a pure dc signal is sent through a moving iron meter, what will it read?? dc or rms?? when a variable dc signal is sent through a moving iron meter, what will it read?? dc or rms??

GATE,

1 2146

what is an isolation transformer??? what is its purpose??? what happens if it is not used where it should be used?????

2 4024

how does the terminal voltage of transmission lines increase when a capacitor is connected???? This happens not only in transmission lines but also in all circuits. How??? When a capacitor is connected in a transmission line, capacitor also takes energy from the same supply. But how is it able to increase the terminal voltage??? Practically What sequence of events happen during increase in voltage???

1591

design of IGBT firing circuit for 11KV

2077

what is the difference between oil surge relay and buchholz relay.

MPPEB, Suparco,

6399

why we use the 100% and 95% stator earth fault protection for the synchronus generator ?

Operational Energy Group,

1782

Why 36 KV LA is used in 33 KV Line and 9 KV LA is Used in 11 KV Line

APTransco, Bhel, Wipro,

1 5792

How seriving & testing of the HT & LT breakers are done. What are the standard Ir values on which we can come to know the test is passed or failed?

1480

what are the standard IR values should be of R-E, Y-E, B-E, R-Y, Y-B, B-R of VCB in closed condition and in open condition for 500KVA & 1000KVA transformers. and what is the acceptable range when tested by 5000V megger.

ME,

1824

Why VCB is required and ACB is also require? what is the BDV of Trafo of 11/33 KV

1 2502

While testing a ZCT what parameters have to check or measure?

Indian Railways,

1865

as a electrical student why should i hire you?

TCS,

1958

grr resistance & contrator malt continuous

Pioneer Labs,

1644

super position theorem is applicable to

1 2912

a 120 60 watt incandescent lamp has to be operated from 50 c/sec 1 phase ac supply. in order to do this a circuit element has to be connect in series with the lamp. which one of the following sries element is preferable.

SSC,

1 3260


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Un-Answered Questions { Electrical Engineering }

How much kv gas generator is needed to run 2 hp and 1 hp airconditioners, plus a refrigerator and 4 Tvs

4329


what is the difference between single ratio, multiple core and multiple ratio, multiple core ? please explain.

1699


What is the formula for calculating the Instantaneous Short Circuit & overcurrent for any breaker

1438


How to calculate no of EARTH PIT? Describe the formula as per IS standard?

1552


please send me the L&T Emb. sys. placement papers and entire details of pattren

1818






electromechanical relay type identification example : type=tjmh t-stants for j- m- h-

1917


What is the maximum operating temperature for a thermoplastic insulated cable?

616


1.WHAT IS A SMART CAPABLE DB ( DISTRIBUTION BOX) ? 2. HOW TO DECIDE THE TYPE OF DB TO BE USED ( RECESSED/ PLUG TYPE/ SMART ETC ETC? 3. WHAT IS MILLENEUM BUS BAR USED IN DB? 4.DIFFERENTIATE MCCB AND MCB.

1377


what is the acceptable limit value for Desolve Gas Analysis/

1416


What is the formula to calculate the rating of a three phase miniature circuit breaker

1639


what is photo voltic cell,& what are the materials associated with that?and any spcifications like volts/cm etc?

1566


Why different Pressure switch used in marine boiler water circulation system

1275


Differnce between negative Pahse SequenceFunction and unbalance Function?

1269


what is inter connected dc generator?

2197


What is the minimum distance to be maintained in between HT panel and LT panel and Instrument panel as per IEC and NEC standards?

1202