Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is power system.........?

1 1846

why the starting current of a motor is high?

ITC Infotech,

3 5291

how many types of ACB breakers, describe briefly..?

1744

If a ACB breaker is tripping and closing problem, then what will we check internal..?

3 5609

WHY MOSTLY Rph IS USED FOR CONTROL CIRCUITS AUX. SUPPLY ?

UltraTech,

2016

In DC current-excitation to transformer, why it sucks more current? Eventhough there is no power transfer between primary and secondary? R is very low so it should suck less current only na thn y its current increases?

Cairn,

2 4180

why a fan starts rotating in the reverse direction when condenser gets damaged?

1 3713

what are earthing material

1 2648

how to carried out tan delta test in 11 KV alternator ?

2505

how to carried out DAR test in 11 KV Alternator ?

1816

how to can we synchronize different capacity of DG sets.60kva& 250kva?

Power Plant,

2 3929

what is the minimum insulation resistance for HT AND LT motor ?

3 7091

why leading pf indicates a negative sign???

1 3753

inductance and capacitance may result in periodic reversals of the direction of energy flow,how???

1 2534

For two systems transmitting the same amount of real power, the system with the lower power factor will have higher circulating currents due to energy that returns to the source from energy storage in the load.???

Bhel,

1412


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Un-Answered Questions { Electrical Engineering }

What are the three constants associated with a steady state error?

692


how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.

1712


When we need up only in o/p 440v, so why we use directly in 11kva in input?

1253


How does HT work & Voltage required?

1715


how to apply b license to c license in tneb

1309






How much inductance or resistance require as a starter in series with induction motor of specific capacity(e.g. 5 hp) ? What is formula for it ?

1467


why electronic instruments is more favorable than electrical?

1510


WE HAVE THE DC RECTIFIER 1500A, INPUT VOLTAGE IS 3 PHASE. HOW TO CALICULATE THE LOAD? 3 PHASE SIDE EITHER dC SIDE. PLEASE SUGGEST ME

1380


application s to shunt coil

1473


As per the Anchor capstan motor specification, full load current is 200A. starting current is 1750 A and acceleration time is less than 8 seconds. Please guide for selection of cable size.

1410


In constant power region of 3-phase IM torque-speed characteristics, if frequency increases slip A does not alter B decreases C increases D none of above

1550


Why is negative feedback invariably preferred in closed loop system?

1713


what is a synchronizing lamp ?

965


How many turns are there in primary winding? (In Transformer)

1188


Write the analogous electrical elements in force voltage analogy for the elements of mechanical translational system.

693