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Electrical Engineering Interview Questions

how will i find Transformer rating if supply voltage is 11k.v and how will i find incomer if transformer rating is 12MVA

3472

Sir, I need a power supply at 380V. The supply I get in three phase is rated 415V. The total supply I have from the supply company is 70KW. Kindly inform if it is better to use a voltage stabiliser for this purpose or a transformer

4069

from where the self excitrd induction generator get the power?why is the voltage regulation is poor of seig?

1160

why bulbs when connected in series glow dim

8571

How we can change the direction of rotation of Induction motor? Prove it using graphical

1135

What happens with squirrel induction machines if the ends of rotor conductors are kept open? Explain

3605

How we can change the direction of rotation of Induction motor? Prove it using graphical methods.

3184

if we increase the frequency given to a transformer then wat will happen to the transformer size, whether it will increase?

6140

How calculate the Transformer Impedence With Example

4882

How can we reduce the reactive power consumption of your 12.5 MVA power transformer.

5528

what is motor

5093

How to decrease or increase the range of voltmeter? can an ammeter be used to measure voltage? can a wattmeter used as voltmeter and ammeter?

21560

When batteries are connected in series the voltage increases but the current remains unchanged, how can this be? When you consider ohm's law. i.e. If voltage increases, current increases, providing resistance remains the same.

7653

What makes the difference between 50Hz supply and 60Hz supply which one is economical and how can you support your answer...........?

5782

Witch do depand of Power factor and theory of power factor?

1215

Un-Answered Questions { Electrical Engineering }

What is the meaning of HT Trivector Meter ?

1454

What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection

2260

what are the problems that generally occur in power flows??

1891

List the characteristics of filter?

167

In Designing the rating & accessories of a MCCB how to choose the type of releases..means what is the basis for selecting, thermal magnetic, electromagnetic & microprocessr based releases

1172

How you will determine the volume of oil in a particular Distribution transformer.

974

What is a slack bus?

147

Alternator rotor earth fault relay circuit

1063

What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?

1069

how to meas-our losses for L.T & H.T

1173

Write the analogous electrical elements in force voltage analogy for the elements of mechanical translational system.

173

What would be the size of wire used for 2 Ton of window A.C?

996

What is the type of feedback used in an op- amp schmitt trigger?

190

Explain how you decide what size of electrical wire do you need?

166

what are factors to be consider in electrical installation like load factor,diversity factor .....

912