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Q. The frequency of direct current is _______
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Q. Infrasonic sound has a frequency lower than
Q. One Kilowatt hour is equal to -
Q. One watt-hour is equivalent to
Q. Consider the following statements with reference to X-rays; 1.They produce heat when absorbed by ma...
Q. The energy requirement for an industrial application is 1000 kW. hr. If heat losses account for 20%,...
Q. Which of the following is NOT a mechanical wave?
Q. Refrigerators keep food unspoiled as
Q. Rain is falling vertically downwards. To a man running east-wards, the rain will appear to be coming...
Q. A narrow white light beam fails to converge at a point after going through a converging lens. This d...
Q. What is the use of a radar?
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