Noise pollution level in a chemical plant is expressed in (A) Roentgen (B) Decibel (C) Hertz (D) None of these

Noise pollution level in a chemical plant is expressed in
(A) Roentgen
(B) Decibel
(C) Hertz
(D) None of these
by

1 Answer

Answer :

(B) Decibel
by

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Indicate the false statement. Noise figure is defined as A. the ratio of the S/N power supplied at the input terminal of a receiver or amplifier to the S/N power supplied to the output or load resistor B. noise factor expressed in decibels C. an unwanted form of energy tending to interfere with the proper and easy reception and reproduction of wanted signal D. S/N of an ideal system divided by S/N at the output of the receiver or amplifier under test, both working at the same temperature over the same bandwidth and fed from the same source

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