Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

how squirrel cage & slip ring motor works? how they differ from each other

1 5541

why the earth pin in a 3-pin socket is longer and thickest?

5 9419

which is better 50 HZ supply or 60 HZ supply?

6 12468

Difference between KW & kVA

7 11538

why -48 volts dc used in telecommucation

2742

What will happen if primary of transformer is fed with Square wave instead of sinsoidal wave ?Will it operate or Not?

Areva,

3 17415

i want to know how to determine that a surge arrester work properly in 11kv system. and how to test a 12kv surge arrester

2195

Sir,In our company there are 3 caterpillar make(capacity:(1) 3.3KV,2.5MW(2)3.3KV,2.5MW & (3)3.3KV,1.9MW) & 1 deutz make (capacity:11KV,3.8MW)gas engines utilised,all are running in paralell. There are three transformer utilised,(1) 6.25MVA,3.3KV/22KV,Impedence voltage:6.7% used for two generator,both are 2.5MW(2)5.5MVA,3.3KV/22KV,Impedence voltage:7.2% used for one generator of 2.5MW & (3) 5.5MVA,11KV/22KV,Impedence voltage:7.8% used for one generator of 2.5MW.all generator breakers capacity of 1250Amps. Sir,I want the details of fault level calculation of generator,transformer individually & for whole system. If you require any information from me.feel free for contact me sir.pl.send the answer of my question as the earliest as possible.

Piramal Healthcare,

2176

Why indicate only 440V to 3-phase supply.

4 9405

whatis mean by voltage?

7 11033

Main Differance between Primary Distribution & Secondary Distribution Of Electricity....?

1 24844

Why is a synchronous motor always star connected??

Bhushan Power Steel,

2650

what is the benift of HT metering & LT metering

1 4868

what is the wattage of 'zero watt' bulb?

PSEB,

16 34796

Megger type of instrument is used to check??

8 10608

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Un-Answered Questions { Electrical Engineering }

my b-tech percentage is 50%. what answer will satisfy the hr ?

2184

why sometime we get electrical shock while touching the ballon of dish tv connection ? which we should not get.

2038

i need the details about bhel exam.how to apply for that.please send to my email-id.thenmozhi2k7@gmail.com

2066

1. What is maximum permissible distance between smoke detectors ? 2. How do we decide number of smoke detectors required in a large office, warehouse, hall etc ? 3. What should be maximum height of smoke detectors ? 4. Where do we use heat detector, optical smoke detector, temperature sensitive detector ?

2956

If the line voltage is reduced to 75% of its rated value then by what percentage current will reduce ?? 75% 25% 50% no change and why ?

2258

What do you mean by Frame 5 Gas Turbine as well as Mark II.

2549

I want to know how to calculate the size of electricity cable in building?

2057

The magnitude of sum of two sinusoidal av voltage is equal to 230 volt.the magnitude of each individual voltage is also equal to 230 volt.what must be the phase difference between voltages?

1670

How to design the NGR Resistance

2132

What is inductance?

1273

anyone knows service engineer in chennai for EDM SPARKING MACHINE.CHMER PULSE CD 60 M.pL GIVE ANY CONTACT NOS

2462

Please brief what is sinewave

2196

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.

2272

What are the difference between CT/PT operated Meter and RRAMR Meter for HT/LT application?

2670

What is the rating of circuit breaker needed for 300 KVA load in 33 KV supply line in a transformer of 33 KV / 415 Volt ?

1820

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