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⚡Electrical Engineering Q&A⚡

Why the capacitors works on ac only?

by EE Q&A asked Jun 12 1 view

Why the capacitors works on ac only?

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1 Answer

by EE Q&A answered Jun 12

Generally capacitor gives infinite resistance to dc components (i.e., block the DC components). It allows the ac components to pass through.

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by EE Q&A asked May 30 2 views

Which of the following statement is not valid for Megger ? A. The scale of a Megger is generally ranges from 0 — infinity Ω. B. The operating voltage of a megger is about 50 to 100 V. C. The speed of megger is kept around at 160 rpm D. It is used to measure low resistant as well as insulation resistance. E. It basically works on the principle of electromagnetic induction.

Which of the following statement is not valid for Megger ? A. The scale of a Megger is generally ranges from 0 - infinity Ω. B. The operating voltage of a megger is about 50 ... low resistant as well as insulation resistance. E. It basically works on the principle of electromagnetic induction.
Last Answer : Option d is correct answer . Because megger is not use for measurement of low resistant....

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by EE Q&A asked Jun 12 1 view

Why an ac solenoid valve attract the plunger even though we interchanges the terminal? Will the poles changes?

Why an ac solenoid valve attract the plunger even though we interchanges the terminal? Will the poles changes?
Last Answer : Yes because the poles changes for every half-cycle of ac voltage so the polarity of AC voltage is continuously changing for every half cycle. So, interchanging of terminals in ac system does ... difference. That's why the ac solenoid attract the plunger even though its terminals are interchanged....

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by EE Q&A asked Jun 12 1 view

Why an ac solenoid valve attract the plunger even though we interchanges the terminal? Will the poles changes?

Why an ac solenoid valve attract the plunger even though we interchanges the terminal? Will the poles changes?
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by EE Q&A asked Jun 12 2 views

Why we do 2 types of earthing on transformer (i.e. :) body earthing & neutral earthing, what is function. i am going to install a 5oo kva transformer & 380 kva DG set what should the earthing value?

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by EE Q&A asked Jun 12 1 view

Why link is provided in neutral of an ac circuit and fuse in phase of ac circuit?

Why link is provided in neutral of an ac circuit and fuse in phase of ac circuit?
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