Answer / manzoor baloch

It must be at least twice the highest frequency present within the wanted spectrum of the sampled signal.

7. A resistance of 30 ohm is connected across 240v supply. If a resistance R ohm is connected in parallel with 30ohm resistor across the same supply, the current drawn becomes triple of original one The unknown resistor R is

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working principle of UPS

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why power not passes in plastic and rubber material

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what is power factor? whether it should be high or low? why?

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