Electrical Engineering Interview Questions

why do motors burn out? I understand why adding parallel loads to a power source means more current moves through the circuit, and can destroy circuit elements by overheating. What about when you have a vaccuum cleaner intake flush against a floor, a room fan sitting directly against a wall, or a power drill trying to drill through something too hard?

643

WHAT IS THE DIFFERENCE BETWEEN NUTREL AND EARTHING

6719

For 300 MW plant what is the distribution voltage

4985

in alternator what is use of AVR ? how AVR is operating either AC or DC?

3101

in alternator how we can give power to rotor ? its power is AC or DC ?

2506

how can u determine size of the conductor by knowing the voltage level

2955

why HV test for cables?.why 0.7times?

1058

What will be the output of t/f supplied with DC sourse?

1886

what is IP55,IP65

6297

what do u mean by starting torque? how it should be for a good motor? what is the relation between starting torque and power factor? What is the relation between efficiency and starting torque?

1879

3089

define differential current and restraining current in relays. how to calculate it by mathematically? post the formulaes.

24571

why the rating of a transformer in kva not in kw.

4374

why cu losses called cu losses.

3757

What is the value of nuetral current in star connected load when DC is supplied to it???

1679

Un-Answered Questions { Electrical Engineering }

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

703

why does the magnetic balance tests at transformer?

532

How can we convert 11 kv to 440 volt without using transformer ?

130

Is phenomenon of resonance is harmfull fr the machine? if not or if yes please explain it?

586

WHAT IS THE SIGNIFICANCE OF VECTOR GROUPS IN TRANSFORMER? WHAT WILL BE EFFECT WHEN PHASE DISPLACEMENT CHANGES IN TRANSFORMER?WHAT IS THE NEED TO BE PHASE SHIFT CHANGE BETWEEN THE PRIMARY AND SECONDARY WINDING

478

comparision between ACB and VCB

925

Control wiring of a dol starter for forward and backward

100

whati s the sludge current in ups

798

how to do the ductor test?

5193

explain all the classes with example

578

Will an earth leakage trip be activated if the component or wiring is faulty on low voltage equipment.Example An electrical Cat Scarer placed in the garden and water gets into the wiring.

585

what is the use of static frequency converter and static excitation equipment? and where it is employed? for what?

2082

Motor,transformers,capacitor tubelight etc....

296

some basic standard questions on transformer.

363

How isolater function when installed inelectrical 440V wiring

718