The noise produced by a ________ cooled machine is less as the rotor moves in a medium of smaller density?
Aeither A. or B.
Bhydrogen
Cair
Dnone of the above
Correct answer
B. hydrogen
Explanation
The correct answer is hydrogen.
The noise produced by a ________ cooled machine is less as the rotor moves in a medium of smaller density? - Answer and Explanation | Academy of Pakistan