Top 150+ Solved Hydraulics MCQ Questions Answer
Q. Water is flowing through a rectangular notch, having base width 500 mm and head over it is160 mm. Find discharge of notch if Cd = 0.6.
a. 0.0567 m3/sec
b. 56.70 m3/sec
c. 0.0567 lit/sec
d. 56.70 lit/sec
Q. Only one reading, i.e. head (H) is required to be taken for the measurement of discharge in atriangular notch.
a. true
b. false
c. all
d. none
Q. A rectangular notch gives more accurate results for low discharges than a triangular notch.
a. true
b. false
c. all
d. none
Q. The same triangular notch can measure a wide range of flows accurately.
a. true
b. false
c. all
d. none
Q. When the length of the weir is less than the width of the stream, there will be contraction of flow at each end. This contraction is known as
a. side contraction
b. end contraction
c. sides contraction
d. none of the above
Q. The velocity with which water approaches the weir, is known as
a. velocity coming
b. velocity ends
c. velocity of approach
d. all of the above
Q. the velocity of approach is considered for the discharge over the weir then the additionalheight of must be considered.
a. true
b. false
c. all
d. none
Q. The cippoletti weir is a trapezoidal weir, having side slope 1 horizontal to 4 vertical.
a. true
b. false
c. all
d. none
Q. Determine the head over sill of a 90° V-notch when the discharge passing over it is 100 lit/sec.consider Cd 0.6.
a. 0.346 cm
b. 3.46 cm
c. 0.346 m
d. 3.46 m
Q. A 12 m long weir is subdivided by four intermediate vertical posts each 0.6 m wide. If the weir is discharging under a head of 0.5 m, calculate discharge using Francis formula.
a. 5.895 m3/sec
b. 5.895 m3/hr
c. 5.895 lit/sec
d. 5.895 lit/ hr
Q. The velocity of liquid particles at the centre of pipe is less than the velocity of particles nearthe inner surface of pipe.
a. true
b. false
c. all
d. none
Q. The frictional resistance is proportional to the velocity in laminar flow
a. true
b. false
c. all
d. none
Q. The fR depends on the nature of the surface of contact in laminar flow.
a. true
b. false
c. all
d. none