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Cable
What is the difference of h.t and l.t. cables ?
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Neutral Point
Why neutral point is not required in high transmission line?
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Synchronous Machine
We know synchronous machine run at a constant speed.Consider Synchronous motors, If you load the machine, will the speed reduce? If it does so, then it prohibits the property of synchronism. So Explain What is happening?
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Power Factor
What do you mean power factor?What is the use of Power Factor?
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SC Test
Why SC test is performed on LV side?
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Cable selection
Why Cable selection depends on Load current? (UG Cables & OH lines)
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Distance Between R,Y,B wire
What is the distance between R, Y and B wires when the line is going from one sub-station to another sub-station?
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DC Voltage Control
How we can step-up or step-down the DC voltage directly?
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Transformer Voltage Regulation
Which of the following test are to be conducted for the determination of voltage regulation of a transformer.a. Load Testb. Short Circuit Testc. OC Testd. Retardation Test.
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Transformer Capacity
If the capacity of a Transformer is 20/26 then what does 20/26 shows? what is its purpose?
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Heater Effect on Bulb
If Heater of 1000W is connected in series with 60 W bulb. what is the effect on the bulb.
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Reactive Power
Why the reactive componet is generated in power system?
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Lightning Arrester
what is lightning Arrester? what the use of this in substations?
Electrical Engineering Interview Questions
Ans