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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

what are the major & minor faults that occur in an inverter and in UPS ? And how to repair and resolve them ?

2365

Wtat is vaccum currcuit breaker.define with cause of used.and where be use it Devise .

1 4001

how invertor convert the dc into ac give brif detail

2157

How we can convert H.P into KW or Vice versa

Suzlon,

11 19812

Why 4 pole generator generates more power and 6 pole generates less power campare to 4 pole

Julius Berger, Suzlon,

2 6531

Why Batteries are rated as AH i.e AmpereHour,and its formula to converting AmpHour to Amp

Suzlon,

4 9157

What are the different methods of improving power factor,especially in Wind Sector

Suzlon,

2 7120

11KW Delta motor is taking about 44Amps in star and goes upto 70Amps in delta and trips OFF. The rated current is 26Amps. Application is for the blower. The motor takes ( no load without coupling impller ) only 2.5A and 5Amps in star & delta starter test.Need to know why its taking high current.

Pfizer,

10 19916

What is relation b/w Transmission Lines & Communication Lines ?

2 8856

quantizer means?

1943

WHAT IS DIFFERENCE BETWEEN idmt and instentanous relay? is idmt is used as back up protection or else?or when instantenous relay saturates IDMT will operate???

BK, REL,

1 11590

what is threshold voltage for a relay???what does it exactly means ?whats its value in our indian transmission system say 11kv feeder RMU relay

3 13345

if the back emf eqution for dc motor EB=(QPNZ/60A) THEN what is the value of A for PMDC MOTOR OR how can dicide the value of "A"

BSL,

2 5194

IF WE SELECT THE 60H FREQUENCY IN INDIA WHAT WILL THE GOOD AND BAD EFFECT ?

3 6788

How can we calculate the capacitance of generator?

1 4680

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Un-Answered Questions { Electrical Engineering }

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.

1976

Why we used 690V in ACS 800 drives.Why dont use standard voltage like 415v or 1.1Kv

2454

What is “pu” in ee?

1091

what is the disadvantages of common earthing for AC and DC equipment? (i am talking about inverter control room and inverter duty transformer earthing is common...?)

1676

What is the distance between each insulator in 33kv transformer and how can it calculate

2184

Give the expression for the frequency of oscillations in an op-amp sine wave oscillator?

1114

Define piezo-electric effect?

1127

what is the physical connection of a analog i/p to a analog i/p module (ab plc)and through a analog o/p module(ab plc) to a analog o/p . and how all the process control by scada

1927

what is negative and zero impedance in 3 phase induction motor ??

2179

what is the significance of tan&delta and how it performed in power transformer

1935

solar inverters was not connected to the nuteral link .this nutwral possible to any other systems

1877

difine electrical ballast in HPSVL

2091

WHAT IS MEANT BY TV TERMINAL IN 500MVA TRANSFORMER?

2288

how define the torque in ac drive. from electrical side in the drive friquency ,voltage and current three factor is there.

2228

Dyn1 transformer vector group testing how to do

1803

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