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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the difference between series and shunt compensation using facts in a transmission line

College School Exams Tests, Genco,

8 37657

Suppose i Have an Ac motor of 25Hp 1500 Rpm 50 Hz Can i run a motor 2500 Rpm by AC drives by increasing a frequency either it safe or not ....

2 2581

what is the use of Reactive power

2 3734

1 KVAR = 1.3Amps but, 25KVAR capacitor/690V capacitor takes just 21Amps as leading current, what is the reason? Please explain...

1 6653

why we are 0.8 power factor only?

Suman Industries,

1 3080

You are given 220 V supply source, four wires, an ammeter and voltmeter. There is no any indication or description on meters. How will you identify which is ammeter or voltmeter?

ABB,

7 7052

If any HVDC line is going with positive & negative(the negative usually have return path of current with earthing electrode). Now the question is if this HVDC earthed electrode which is using as return path and earthed any nearby 400kv or 220kv AC substation equipments. which will be the impact of this on AC substation & its equipment, how severe may be this and what should be the minimum distance require between HVDC earthed electrode and AC substation equipments? It's really an high engineering level question...Dare to answer and increase your knowledge.

MEIL,

1101

What is a soft start?

Focus,

1 3200

IN CABLE TRENCH WHY FILL UP THE SAND. AND WHAT IS THE DIFFERENCE BETWEEN OVER HEAD AND UNDER GROUND LAYING THE CABLES

Cable Wireless,

2 10596

How to know the following data of synchronous generator 1. D-Axis Unsaturated Reactance 2. D-Axis Unsaturated Transient Reactance 3. D-Axis Unsaturated Sub - Transient Reactance

1054

what are the insulation properties.

Cable Wireless, MAHINDRA,

2 3746

what is mean by transition resistance of transformer?

3348

X is a uniformly distributed random variable that takes values betweeen 0 and 1.The value of E {X3}(x cube) will be.

GATE,

1 2051

If the rank of a (5x6)matrix Q is 4, then which one of the following statements is correct ?

GATE,

1 2804

An input device is interfaced with Intel 8085A microprocessor as memory mapped I/O.The address of the device is 2500H.In order to input data from the device to accumulator,the sequence of instruction will be

GATE,

1 4398


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Un-Answered Questions { Electrical Engineering }

for what purpose the star point is done in ct

568


What is the Resposiblity of Electrical Utility Engineer

1908


Factory acceptance test. FAT. For 132 kv transmisstion towers what is that meaning and what are the tests commonly companies perform now days.

758


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.

1054


what is the standard values(Megger test) of resistances between L&N,L&E and N&E for a system on IEE regulations?

1269






two phases with neutral supply can be taken in 3C X 10 sq.mm cable .

588


why we can use 1 to 5V dc

1065


What is meant by derating factor?

245


Define de-sensitivity?

258


Currently what is the highest capacity (MVA) of SPPg generator available in the market?

954


what is mind in cable

1159


what parameters should we check to reduce the power bill

1420


anyone please send transformer parameter design formulas & details of tap changer ? plz i have interview this week its more helpful for me ?

1045


how load of a turbo generator can be increased

1050


what are the types of electromagnetic forces developed in practical transformer?

1729