500 Best Hydraulics MCQ
Q185). Practical fluids possess
a).viscosity
b).surface tension
c).compressibility
d).all the above.
Correct Answer:
all the above.
Explanation:
Q186). The depth of the centre of pressure on a vertical rectangular gate (4 m wide, 3 m high) with water upto top surface, is
a).1.0 m
b).1.5 m
c).2.0 m
d).2.5 m.
Correct Answer:
2.0 m
Explanation:
Q187). An open container filled with water is moved vertically downward with a uniform linear acceleration. The pressure at its bottom will be
a).greater than static pressure
b).equal to static pressure
c).lesser than static pressure
d).none of these.
Correct Answer:
lesser than static pressure
Explanation:
Q188). For uniform flow in canals
a).there is a balance between the frictional loss and drop in elevation of the channel
b).bed and free water surfaces of a channel are parallel to each other
c).bed of channel represents the hydraulic gradient
d).all the above.
Correct Answer:
all the above.
Explanation:
Q189). If is height of the liquid above the sill, the effect of end contractions, according to Francis formula, is
a).0.1 H
b).0.2 H
c).0.3 H
d).0.4 H
Correct Answer:
0.1 H
Explanation:
Q190). Pick up the correct statement from the following :
a).For maximum velocity of flow, the depth of water in the circular channel must be 0.81 times the diameter of the channel
b).For maximum velocity, the hydraulic mean depth must be 0.3 times the diameter of circular channel
c).For maximum discharge the depth of flow must be 0.95 times the diameter of circular channel
d).All the above.
Correct Answer:
All the above.
Explanation:
Q191). In flowing liquids pitot tubes are used measure
a).discharge
b).pressure
c).velocity
d).depth.
Correct Answer:
velocity
Explanation:
Q192). Capillary rise of water is
a).directly proportional to surface tension
b).inversely proportional to water density
c).inversely proportional to diameter of the tube
d).All of these.
Correct Answer:
All of these.
Explanation: