Water Resources Engineering - Online Test
Q1. For subcritical flow in an open channel, the control section for gradually varied
flow profile is
Answer : Option A
Explaination / Solution:
No Explaination.
Q2. Group-I contains dimensionless parameter and Group-II contains ratio
Correct match of the dimensionless parameter in Group-I with Group-II is
Answer : Option C
Explaination / Solution:
No Explaination.
Q3. For a 2-D flow field, the stream function ψ is given as ψ = 3/2(y2 - x2). The magnitude of discharge occurring between the stream line passing through
points (0, 3) and (3, 4) is
Answer : Option B
Explaination / Solution:
Q = ψ1 − ψ2 = 3/2(9-0) - 3/2(16-9) = 3 units
Q4. The ratio Nf / Nd is known as shape-factor where Nf is the number of flow
channels and Nd is the equipotential drop. The flownet always drawn with a
constant b/ a ratio where b and a are distance between two consecutive flow lines
and equipotential lines respectively. Assuming that b/a ratio remains same, the
shape factor of a flow net will change if the
Answer : Option B
Explaination / Solution:
No Explaination.
Q5. In a setting chamber, what is the minimum dimension of particle which can be
completely removed, if rate of overflow is 30m3 / d / m2 . Take G = 2.65; µ = 1×10-5 Ns /m2
Answer : Option B
Explaination / Solution:
Q6. A watershed got transformed from rural to urban over a period of time. The effect of urbanization on storm runoff hydrograph from the watershed is to
Answer : Option C
Explaination / Solution:
No Explaination.
Q7. For a given discharge, the critical flow depth in an open channel depends on
Answer : Option A
Explaination / Solution:
No Explaination.
Q8. For a body completely submerged in a fluid, the centre of gravity (G) and centre of Buoyancy (O) are known. The body is considered to be in stable equilibrium if
Answer : Option D
Explaination / Solution:
No Explaination.
Q9. The flow in a horizontal, frictionless rectangular open channel is supercritical. A smooth hump is built on the channel floor. As the height of hump is increased, choked condition is attained. With further increase in the height of the hump, the water surface will
Answer : Option B
Explaination / Solution:
No Explaination.
Q10. The normal depth in a wide rectangular channel is increased by 10%. The
percentage increase in discharge in the channel is
Answer : Option D
Explaination / Solution:
The discharge in the channel is given by
