500 Best Hydraulics MCQ
Q121). An open container filled with water is moved vertically upward 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:
greater than static pressure
Explanation:
Q122). The gases are considered incompressible if Match number is
a).equal to 1.0
b).equal to 1.5
c).is more than 0.5
d).less than 0.2
Correct Answer:
less than 0.2
Explanation:
Q123). The flow in which each liquid particle has a definite path and the paths of adjacent particles do not cross each other, is called
a).stream line flow
b).uniform flow
c).steady flow
d).turbulent flow.
Correct Answer:
stream line flow
Explanation:
Q124). The dimensionless parameter not applicable to flowing liquids, is
a).Reynold number
b).Weber number
c).Pressure coefficient
d).Kinematic viscosity
Correct Answer:
Kinematic viscosity
Explanation:
Q125). The pressure rise due to water hammer depends upon
a).the velocity of flow of water in the pipe
b).the length of pipe
c).time taken to close the valve
d).all of the above
Correct Answer:
all of the above
Explanation:
Q126). In a two dimensional flow if the components of the velocity are = ; = , the point where no motion occurs, is known as
a).critical point
b).neutral point
c).stagnation point
d).stationary point
Correct Answer:
stagnation point
Explanation:
Q127). Most economical section of a circular channel for maximum velocity, is if,
a).depth of water = 0.810 diameter
b).hydraulic mean depth = 0.304 diameter
c).wetted perimeter = 2.245 diameters
d).all the above.
Correct Answer:
all the above.
Explanation:
Q128). For a most economical rectangular channel, the width of the channel must be
a).equal to depth of flow
b).twice the depth of flow
c).half the depth of flow
d).None of these.
Correct Answer:
twice the depth of flow
Explanation: