Electrical Engineering Interview Questions

What is inverse definite minimum time lag relay? Where is it use?

TATA,

2349

How we calculat the NGR of 3phase Generator, Our generation voltage 11KV

2925

What is the current flow in 230v ac supply ? What is the current flow in 415v Ac supply ?

5685

what is the value of the earth resistance in mositure place

HCL,

4967

if u give d.c. supply to transformer primary then what happen.&why??????????????

DCS, DRDO, HCL,

8139

how to calulate transformer secodary fault A?

3677

why phase always came one direction in 5pin socket(right hand or left hand) which direction and why..........?

14720

A 40 kva transformer has a core loss of 400W and a full load copper loss of 800W. What is The proportion of full load at maxmimum efficiency?

4860

The iron loss in a 100kva transformer is 1 kw and full load copper losses are 2 kw, then what is maximum efficiency occure at a load?

MPSC,

7505

What is the Difference between Ac Drives and Dc Drives? According to application, speed, Torque, cost, Reliability, Construction, Motor etc... Thankyou !!!

IFFCO, IIT,

1728

what is the use of terminals in transformer ?

4416

which is the best, A/C DRIVES or D/C DRIVES for cranes,...... ...and why......?

4953

What is the full form of CNC in electrical mechines.......?

7623

How one may guess the direction from which the distribution line is incoming if there is no pole plate on poles?

1730

what is power factor

7311

Un-Answered Questions { Electrical Engineering }

Mention the difference between Analogue and Digital circuit?

735

A 1F capacitor is charged to 100V initially. A 1H inductor is connected accros the capacitor througha a switch. The current in the circiut when the switch is closed is____

1917

main difference between ac and dc?

1245

How do the synchronizing lamps indicate the correctness of phase sequence between existing and incoming alternators?

1642

what is saturation kit?which use above 15 kw motors panel side.

3621

how to calculate the no load current in transformer?

2031

I want to design a heating coil of 80/20 nicrome for 3.5KW please give me the calculations choosing for physical dimensions assume coil voltage will be 110V AC assume necessary conditions

1243

can any one suggest me the tilt angle of my solar pannel ?? or tell me how can i know the fix tilt angle of my solar pannel?? my cordinates are 31.503629,72.993164.

1430

What is transient response?

730

how to design the heater in temperature control unit to heat 50KL of water?

1481

When we use 3 terminal resistor?

682

how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage. note--it is tested with 5000 kv megger and insulation resistance is 0.05 M ohm. and some time 0.03 M ohm comes.

1786

i am going to correct power factor of 1600kw induction motor,when i calculate capacitance of capacitor it is three time more in star connection than delta. if motor is star connected which connection i shall adopt for capacitors and reason for adopt this connection

1479

With a phasor diagram show the effect of increasing the field current of a generator supplying a constant real power and connected to a grid system.

1551

sent to a site and asked to explain how you would like a twenty seven flour building should be supplied with lighting and sockets plus a water boiler.

1532