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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

When calculating the speed of a rotor required for a particular frequency of synchronous generator we use the equation 60f/p Is this p is the number of pole pairs of rotor & do we consider the number of pole pairs in the stator is 1?

UOM,

2023

Importance of fault current in power transformers and how to monitor the same? How is it different from winding temperature?

Impulse,

1854

3,12,24,33,_ ,75,150 Find the missed number in this sequence

HCL,

2 19717

What is given by the definition in BIL IMP/PF = 950/395 kV. This was found in a name plate of a power transformer.

AES,

2369

can we keep open the secondary of current transformer?

Jyona Power,

1 3052

is dc transformer is possible ?

Jyona Power,

4 5458

is this the formula of building wiring to get the main breaker.Watts/volts*.8%+higher motor*(25%)=ampere. yes or no or send the correct formula for building wiring.

1725

why we generate 11kv power supply in generating station?

DBG, NTPC,

1 3909

what will be the effect if you were using different brands of outlets?

TESDA,

1938

What will be the output of an alternator ,if the field current is single phase ac supply.

DRDO,

1 3377

Question about ct secondaries connections?

1 2888

What is the function of turbo charger in generators

1 3626

Which rccb 30ma,100ma,300ma sensitivity should be used in domestic line and what is difference, advantage and disadvantage of all three

2 21623

sir, in a industry present pf is 0.54 pf 25hp power is there its want improve 0.9 pf. which suitable capacity capacitor is suitable please inform me.

2 3768

what will happen if synchronous machine rotor fed from single phase ac supply

1758

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Un-Answered Questions { Electrical Engineering }

what is meaning of bus riser

2595

Give me the calculation steps to design an electromagnet to be work in 230V 50 Hz AC Supply. Also give force that is created by that electromagnet when it gets energized.

2223

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

1897

How REF protects transformer alone? explain with diagram.

1566

what is the effect of un-synchronized power.

2087

What is ramp signal?

1118

What is force on parallel conductors ?

1101

what are the advantages disadvantages of connecting high voltage block( 1:1 transformers) transformers between the turbo generators and busbars.

2116

in the case of 6.6kv motor starter combination contain fuses on it VCB. but in 11KV motor starter combination Fuses are not using in it's VCB why?

2297

why we need to us lenz's law for synchornous motor

2586

what is the VA(Volt-amphere)? define with calculation?

1296

A generating system will have a total capacity of 300 MW. Find the probable forced outage when the capacity is supplied by two 150 MW units. The operating probability of all units is P=0.98 and forced outage probability rate Q =0.02 .

2653

how can we calculate the ratio of caustic soda and water in lrs.

5858

Explain the working of any one cutting machine

1115

what is mean by dry frequency

2480

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