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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why fan consume constant power even when we increase or decrease its circuit resistance through speed regulator???

2 2876

why we use condenser in the thermal power plant, althrough the same vapour will be again heated

2 3170

What is the Maximum Power generation capacity of a Synchronus Machine ??

1 2128

WHY THE RATINGS OF THE TRANSFORMER IS 33KV WHY NOT OTHER???

Lanco,

1527

what is the voltages using in movie theaters??? why ??why not other??

Lanco,

1363

what is the problem in manufacturing transformer with 0 degree phase displacement.???why alwasys go for DYn11 or DY5?Whys not DY0 i.e zero degree displacement between primary and secondary side vectors?

Bhel, dpdc, Prime Electrical,

3 5274

Why carbon brush used in dc motor also why its not used in ac motor?

RRB,

2 3546

Why sip ring used in ac motor also why its not used in dc motor?

RRB,

2 5257

up to what extwnt of voltage the celing fan works?

ICSA,

3 3702

What it the purpose of parallel phasing transfomers??

ABB, Reliance,

4 5292

what does the transformer connection symbol YNaod1 mean ?

3 23698

what is HI POT test

Suzlon,

4 5170

what is the size of trasmission conducatar

TCS,

2 3831

What is bridge rectifier and explain with details

1098

What is chopper

Enercon,

1 3163


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Un-Answered Questions { Electrical Engineering }

WE know that for Inductor X=2pifL,In DC f=0,then X=0 so,V=IX=0;But In the DC excitation of rotor of AC generator,DC motor field coil which coils are inductor so why does not applying DC voltage short the rotor coil of AC generator and field coil of motor?If it would then DC source might be damaged but it is not happened. Why does the strand conductor of Electrical power transmission line make twist?

3280


how can we make cable shedule for controll wiring ? which details must be required for it.?

1209


What the formula for calculating no.of earthings & size of earth strip for 100mX90m shop.

1325


how can we find thae value of capacitor for single phase motor. what is difference between starting capacitor and running capacitor.

1487


1. Design a counter which counts 0, 4, 8, 2, 6, and repeats using: 1.a using JK flip flops 1.b using T flip flops 1.c using D flip flops

1056






WHAT IS SPEC OF CLEANROOM MOTOR AND LIGHT FITTINGS?

1421


I am having a 42KW 3 phase electrical heating furnace, heating element is 80/20 nichrome material, my connections is made in such a way that 2 star connection compromising 2 coils per phase so totally 12 coils, shall if i use it unbalanced star condition (instead of 2 group of 3 phase or 1 group of 3 phase, connecting 4 phases of 5 phases) what will be the consequences and is it acceptable?

873


Should power factor be low or high?

260


What is inrush current? how can calculateit? what is the affect of it?

1099


what would u consider to be the basic purchase order information you would need to proceed with a cable inspection assignment?

1041


what is the differance between HT motors And LT MOTORS.

1118


what is the importance of Partial Dischage test for Electrical Equipments

1068


Difference of induction motor & servo motor ??

887


why we get 2 differnet values for power factor in 2 watt meter method in 3 phase

987


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

1082