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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

I have 1 KW, 3ph. 440v, 50 hz, cos(phi) .75, efficiency 75%(star delta connection)Motor. How to calculate line current & Phase current (1) Star connection (2) delta Connection

2 5744

How much CTs are required to measure th curent in DOL starting of motor?PLs explain.

1 4493

calculate external resistance values to add to the rotor of a slip ring induction motor. STATOR- 415 V, 3 phase delta, 1100 A, 50 Hz, 1490 rpm, pf 0,86 ROTOR - 660 V, 590 A, 50 Hz. STATOR current at each steps STEP1-600A,STEP2- 800A,STEP3-1000A,STEP4-1100A.

3518

A car's starter motor draws a current of 100 A at 12,0 V when starting the engine. The mechanical power required to turn the engine is 960 W. At what rate is energy from the battery converted to non-mechanical forms of energy?

Siemens,

2116

what is 6 pulse and 12 pulse inverter? Explain brifly

2 18715

how does a liquid starter reduce the starting currents?

2097

What is distance protection relay? where & why we use this relay?

Siemens, UltraTech, Voltech,

2 12799

how much load should be given on 5 mva transformer

NTPC, OHPC, Power Grid,

7 28438

what is a vector protection in transformer

1978

solar energy light efficiency & disadvantages?

2071

what is alternator?

4 6990

what is the difference between LT & HT Motors

L&T,

11 91489

what are different types of electrical windings? i know the distributed winding ,concentrated winding etc but i want some detailed information, in what condition we will use distributed,concentrated windings what are the difference between them which is best, how induced emf changes by using different types of windings 20 hours ago - 1 week left to answer

1971

what is the basic difference between capacitor and condenser ?

ABB, Essar,

17 54585

when the supply of MSEB is cut off & all the load of the industry is driven on generator at that time the capacitor which is connected in industry for power factor control is switched off why?

1 4599

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Un-Answered Questions { Electrical Engineering }

IN 1000kva transformer where the oil and winding temperature sensors is connected

2479

Which type of DG need Netral Earthing?

5230

whit is 33kv power 300*300 cable full current with formula

1747

how to decide the capacity of accl

2391

How to improve fuel cell in a distribution system?

1946

what is a vector protection in transformer

1978

What is the meaning of C1, C61, C91 cable

3421

What is the general system requirement of alternator?

1812

WHY TERTIARY OF POWER TRANSFORMERS IS LOADED WITH EQUIPMENTS LIKE CT,PT,ISOLATOR AND CB

1870

what is earth resistance? how to measured? and give values at power station and mcc area?

1930

What is difference and reason b/w -48V BTS system and 24 V BTS system. Plzzzzzzzzz tel me.

2176

What is servo motor and what are different types of servo motor

2343

How to convert 2 phase to 3 phase electricpower in induction moter?

2070

what are the available sizes of pin type terminal lugs in the market today?

1802

What kind of preventive maintenance are there for transformer?

2223

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