Top 350+ Solved Hydraulics and Fluid Mechanics MCQ Questions Answer
Q. In an internal mouthpiece, the absolute pressure head at vena contracta is
a. less than
b. more than
Q. According to Newton's law of viscosity, the shear stress on a layer of a fluid is
a. equal to
b. directly proportional
Q. A moving fluid mass may be brought to a static equilibrium position, by aplying an imaginary inertia force of the same magnitude as that of the accelerating force but in the opposite direction. This statement is called
a. Pascal's law
b. Archimede's principle
c. D-Alembert's principle
d. none of these
Q. The discharge through a channel of circular section will be maximum when the depth of water is
a. 0.34 times
b. 0.67 times
c. 0.81 times
d. 0.95 times
Q. The Francis formula for the discharge over Cippoletti weir is
a. 1.84 LH1/2
b. 1.84 LH
c. 1.84 LH3/2
d. 1.84 LH5/2
Q. According to equation of continuity,
a. w1a1 = w2a2
b. w1v1 = w2v2
c. a1v1 = a2v2
d. a1/v1 = a2/v2
Q. An air vessel is provided at the summit in a syphon to
a. avoid interruption in the flow
b. increase discharge
c. increase velocity
d. maintain pressure difference
Q. In a venturiflume, the flow takes place at
a. atmospheric pressure
b. gauge pressure
c. absolute pressure
d. none of these
Q. The discharge over a triangular notch is
a. inversely proportional to H3/2
b. directly proportional to H3/2
c. inversely proportional to H5/2
d. directly proportional to H5/2