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Electrical Engineering Interview Questions

why do you add the load short circuit impedance when considering short circuit amperage. It seems that you should only consider supply. If you need to consider loads and you don't know what loads are to be added , what would be a good sub-transient reactance rating for the loads?

1235

What the capacitor Current formula?, For 1 KVAr how amps its required? for using the KVAr for boosting the PF Design Calculation.( Eg: for 30 KVAr required how many KW?)

217515

why the crow do not feel the current in overhead line when it sits on the wire??????

7418

Is HT capacitor rating connected directly to motor terminals , related to motor no load current?

1341

What exactly is meant by harmonics and harmonic current?? and what is skewing with regard to this??

4337

What do you mean by distributed winding in alternators? how exactly is 3 phase power generated?

9056

circuit diagram of ht panel

12060

how does a submersible pump work..?

1286

what is the difference between starter and control panel..?

15521

how does a submersible pump work..?

1234

what will happen at secondary side of transformer if i increase voltage at primary side?while V1*I1=V2*I2 will secondary voltage or current increase?

5368

For a three phase induction motor, what will be the effect on motor if the neutral of the system is shifted to say 20 deg.?

1234

how to control the speed to switched reluctance motor

1323

Why the size of transformer decreases if we increases the frequency?

33683

What is ferro-resonance in electrical system? Why it occurs and what are measures to prevent it?

1606

Un-Answered Questions { Electrical Engineering }

1093

what is the effect of vector group while phase sequence of a generator changes,whether the vector group changes or not

1464

What is a Phase shift meter? Where can I get one?

1472

What are n circles?

495

What the difference between ac and dc inductor an capacitor

1549

What is the function of under voltage release ?

829

difference between crane drive and line drive.

1236

837

can anyone explain the star-delta motor control wiring ,which wire go where and how they operate?

783

1.how many earth pits are required for 1000 k.w plant include substion , transformer ? 2. how many earth pits are required for 500kva generator.what is formula to calcute?

2081

I WANT TO know WHICH WAY IS BETTER FOR CONNECTION BETWEEN POWER TRANSFORMER AND MAIN DISTRIBUTION PANEL. 1-IS BETTER WE USE CABLE? 2-IS BETTER WE USE BUS DUCT? my transformer rate power is 2500KVA

2263

What is core CT & it's function?

1408

Can i replace Earth leakage relay to the faulty Earth Faulty Relay

886

What is big transformer parts and their function ? Ty

1430

Either the Armoured Earthing strip of HT 3 core cable have to pass through CB CT or not , why ???

1378