500 Best Hydraulics MCQ
Q113). In C.G.S. system the unit of visocity is
a).dyne
b).joule
c).poise
d).Newton
Correct Answer:
poise
Explanation:
Q114). The ratio of the percentage error in the discharge and percentage error in the measurement of head, over rectangular notch, is
a). 1/2
b). 2/
c). 3/2
d). 3/4
Correct Answer:
3/2
Explanation:
Q115). In steady flow, which one of the following changes with time
a).velocity
b).pressure
c).density
d).none of these.
Correct Answer:
none of these.
Explanation:
Q116). The notch angle for maximum discharge over a triangular notch, is
a).30°
b).60°
c).90°
d).120°
Correct Answer:
90°
Explanation:
Q117). In an inclined pipe, the pressure difference at its two ends is due to
a).sudden head drop at inlet
b).exit head drop
c).frictional loss head
d).all of the above
Correct Answer:
all of the above
Explanation:
Q118). Weber number is the ratio of inertia force to
a).surface tension
b).gravitational force
c).elasticity
d).viscosity.
Correct Answer:
surface tension
Explanation:
Q119). Though angle of deviation of liquid is more in internal mouth piece, the contraction of the jet, is
a).more in the internal mouth piece
b).less in the internal mouth piece
c).equal to external mouth piece
d).none of these.
Correct Answer:
more in the internal mouth piece
Explanation:
Q120). The width of a weir with end contraction, is
a).equal to the width of the channel
b).less than the width of the channel
c).half the width of the channel
d).none of these.
Correct Answer:
less than the width of the channel
Explanation: