Q1.If v is the initial speed of a vehicle, g is the gravitational acceleration, G is the
upward longitudinal slope of the road and fr is the coefficient of rolling friction
during braking, the braking distance (measured horizontally) for the vehicle to
stop is
Answer : Option BExplaination / Solution: No Explaination.
Q2.The ordinates of a 2-h unit hydrograph at 1 hour intervals starting from time t = 0, are
0, 3, 8, 6, 3, 2 and 0 m3/s. Use trapezoidal rule for numerical integration, if required.
What is the catchment area represented by the unit hydrograph?
Answer : Option CExplaination / Solution: No Explaination.
Q3.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 BExplaination / Solution: No Explaination.
Q7.Identical surcharges are placed at ground surface at sites X and Y , with soil
conditions shown alongside and water table at ground surface. The silty clay
layers at X and Y are identical. The thin sand layer at Y is continuous and freedraining
with a very large discharge capacity. If primary consolidation at X is
estimated to complete in 36 months, what would be the corresponding time for
completion of primary consolidation at Y ?
Answer : Option CExplaination / Solution: No Explaination.
Q8.Total suspended particulate matter (TSP) concentration in ambient air is to be
measured using a high volume sampler. The filter used for this purpose had an
initial dry weight of 9.787g. The filter was mounted in the sampler and the initial
air flow rate through the filter was set at 1.5min/m3. Sampling continued for
24 hours. The airflow after 24 hours was measured to be 1.4 min/m3. The dry
weight of the filter paper after 24 hour sampling was 10.283g. Assuming a linear
decline in the air flow rate during sampling, what is the 24 hour average TSP
concentration in the ambient air?
Answer : Option CExplaination / Solution: No Explaination.
Q9.Chlorine gas (8 mg/L as Cl2) was added to a drinking water sample. If the free
chlorine residual and pH was measured to be 2 mg/L (as Cl2) and 7.5, respectively,
what is the concentration of residual OCl- ions in the water? Assume that the
chlorine gas added to the water is completely converted to HOCl and OCl-.
Atomic Weight of Cl: 35.5
Answer : Option BExplaination / Solution: No Explaination.
Q10.The ordinates of a 2-h unit hydrograph at 1 hour intervals starting from time t = 0, are 0, 3, 8, 6, 3, 2 and 0 m3/s. Use trapezoidal rule for numerical integration, if required.
A storm of 6.6 cm occurs uniformly over the catchment in 3 hours. If Φ - index is
equal to 2 mm/h and base flow is 5 m3/s, what is the peak flow due to the storm?
Answer : Option CExplaination / Solution: No Explaination.
Total Question/Mark :
Scored Mark :
Mark for Correct Answer : 1
Mark for Wrong Answer : -0.5
Mark for Left Answer : 0