500 Best Hydraulics MCQ
Q169). One metric slug is equal to
a).1 kg wt
b).9.81 kg wt
c).9.81 kg mass
d).0.98 kg wt.
Correct Answer:
9.81 kg mass
Explanation:
Q170). Falling drops of water become spheres due to
a).adhesion
b).cohesion
c).surface tension
d).viscosity.
Correct Answer:
surface tension
Explanation:
Q171). The most efficient channel section, is
a).semi-circular
b).rectangular
c).triangular
d).half hexagon in the form of trapezoid.
Correct Answer:
half hexagon in the form of trapezoid.
Explanation:
Q172). With a clinging nappe of a weir, the excess discharge, is
a).6% to 7%
b).8% to 10%
c).18% to 20%
d).25% to 30%
Correct Answer:
25% to 30%
Explanation:
Q173). For steady flow in open channels, which one of the following does not change :
a).depth of flow
b).velocity of flow
c).rate of flow
d).All of these.
Correct Answer:
All of these.
Explanation:
Q174). Equation of continuity of fluids is applicable only if
a).flow is steady
b).flow is compressive
c).flow is one dimensional
d).All of these.
Correct Answer:
All of these.
Explanation:
Q175). The flow in open channel is said to be critical if the Froude number is :
a).less than 1.0
b).equal to 1.0
c).greater than 1.0
d).None of these.
Correct Answer:
equal to 1.0
Explanation:
Q176). An orifice is an opening in a vessel with
a).closed perimeter of regular shape through which water flows
b).the water level of the liquid on the up stream side is below the top of the orifice
c).partially full flow
d).prolonged sides having length of 2 to 3 diameters of the opening in thick wall.
Correct Answer:
closed perimeter of regular shape through which water flows
Explanation: