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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 41236

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 3000

what is the use of Reactive power

2 4214

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

1 7005

why we are 0.8 power factor only?

Suman Industries,

1 3458

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 8008

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,

1313

What is a soft start?

Focus,

1 3536

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 11687

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

1307

what are the insulation properties.

Cable Wireless, MAHINDRA,

2 4233

what is mean by transition resistance of transformer?

3757

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 2395

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

GATE,

1 3304

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 5205


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

I want to know Electrical Circuit?

1499


in cvt,there are two windings,1a,1n and 2a,2n.in my one project i use only one winding i.e.1a,1n. the other winding is not in use, so i connect it in open delta and want to close it by ibsertibg thermal resistor. the output of cvt is 132kv/115/sqrt3. plesae tell me exact value of resistor, so i may close it to avoid the resonance phenomenin. send me answer on this email adress please. aetcon-po@aetcon.com

1883


state basic meaning of 'INDUSTIAL AUTOMATION'?

1139


what is thermal resistance of PVC Cable.

1195


for 4 MVA , 33K.V/6.6K.V transformer. secondary side the connected load is 3000H.P. What is the rating of capacitor bank to be insttaled.

1906






What is the basic of DTH.

1696


can some one clearly explain why -48 volt DC use in telecom site????

1038


what is the minimum requirement gigaohms for the insulation test using 5kv in 300mm xlpe cable

1357


Why reactors use before incoming of ac vvfd drive?

1127


what is auto re-closer?

1782


WHY L-G FAULT IS MORE SEVERE IN TERMS OF RRRV?

2458


In motors how many types of cooling systems were used?

1423


TO CALCULATE THE RESISTANCE OF GRR OF HT MOTOR 400KW WHEREAS STATOR VOLTAGE 6.6KV AND ROTOR VOLTAGE 705V AND ROTOR CURRENT IS 346A.

4695


What is frantic effect?

507


why the starting voltage drop in a cable needs to be limited?what is percentage of the voltage drop allowed during starting?

1208