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?

435

WHAT IS THE DIFFERENCE BETWEEN NUTREL AND EARTHING

6006

For 300 MW plant what is the distribution voltage

4559

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

2797

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

2227

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

2669

why HV test for cables?.why 0.7times?

627

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

1707

what is IP55,IP65

6065

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?

1613

2901

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

21906

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

3886

why cu losses called cu losses.

3265

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

1517

Un-Answered Questions { Electrical Engineering }

what are the stresses in circuit breakers ?

444

My question is abt backlog.I had dropped one subject in my second year, and completed this subject in the 3rd attempt, so how many backlogs i have got?1 or 3?plz sujjest the answer as soon as possible

574

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.

623

What are the Return ( Monthly / quarterly/ Annual submitted to Electical Inspector for an establishment (Factory in Maharashtra-- Small scale category having seperate HT line of 22KV ) as per Maharashtra Electricity Act

506

Write a note on Treatment for electric shock.

423

how to calculate vfd o/p voltage by frequency

676

Electrical Engineering

412

Ac generato how produce power I need for camplet defination

206

528

LT cable fault chaecking equipment and to find out the distance at what distence it failure . Name and where it is available?

654

how wecalculate breaking capcity of acb mcb mccb .explain with example

281

Damping resistor provided in open delta (tartiary) winding of a measuring PT at the incoming of a MV inverter drive panel is getting heated up. Can any body explain the reasons and suggest the remedy?

322

Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example?

614

WHAT ARE THE DISADTAGES OF SINGLE-WIRE-EARTH-RETURN SYSTEM USED FOR RURAL ELECTRIFICATION?

460

what is inter connected dc generator?

1186