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Mr. Dubey • 51.43K Points
Coach

Q. 491) A fan is being used under certain conditions. If the fan speed is doubled the power requirement will be

(A) 8 times

(B) 16 times

(C) Unchanged

(D) Double of the original

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M

Mr. Dubey • 51.43K Points
Coach

Q. 492) A jet engine has

(A) Propeller on top

(B) No propeller

(C) Propeller in back

(D) Two propellers

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M

Mr. Dubey • 51.43K Points
Coach

Q. 493) In jet engines the compression ratio

(A) Varies with altitude

(B) Varies with square of speed

(C) Varies as cube of speed

(D) Remains constant

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M

Mr. Dubey • 51.43K Points
Coach

Q. 494) Steam trap is a device that

(A) Allows passage of water but prevents the passage of steam

(B) Allows passage of air but prevents passage of steam

(C) Allows passage of the flue gases but prevents flow of steam

(D) None of the above

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