Fluid Mechanics - Study Mode

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[#266] Which of the following flow measuring devices is an area meter?

(A) Venturimeter

(B) Orifice meter

(C) Anemometer

(D) Rotameter

Correct Answer

(D) Rotameter

[#267] For a given fluid flow rate, which of the following incurs maximum head loss?

(A) Orifice meter

(B) Venturimeter

(C) Flow nozzle

(D) All of the above

Correct Answer

(A) Orifice meter

[#268] A rotameter through which air at room temperature and atmospheric pressure is flowing gives a certain reading for a flow rate of 100 cc/sec. If helium (molecular weight 4) is used and rotameter shows the same reading, the flow rate (cc/sec) is

(A) 26

(B) 42

(C) 269

(D) 325

Correct Answer

(C) 269

[#269] A weir is used to measure the large water discharge rate from a river or from an open channel. A weir is not of __________ shape.

(A) Circular

(B) Rectangular

(C) Triangular

(D) Trapezoidal

Correct Answer

(A) Circular

[#270] A stream tube is that, which has __________ cross-section entirely bounded by stream lines.

(A) A circular

(B) Any convenient

(C) A small

(D) A large

Correct Answer

(B) Any convenient