GATE Civil Engineering

A water resources project with an expected life of 25 years has to be designed for an acceptable risk of $5 \%$ against a design flood. The return period for the design flood (in y...

The mean rainfall over a catchment has to be estimated. The data for four rain gauges located in and around the catchment is listed in the table. Which one of the following stateme...

A 60 cm diameter well completely penetrates a confined aquifer of permeability $5 \times 10^{-4} \mathrm{~m} / \mathrm{s}$. The length of the strainer (spanning the entire thicknes...

To derive the total flood hydrograph at a catchment outlet from an isolated storm, the order in which the following methods are applied, from the first method to the last method, i...

The peak of flood hydrograph due to a 3 -hour duration storm in a catchment is $180 \mathrm{~m}^3 / \mathrm{s}$. The total rainfall depth is 6.6 cm . It can be assumed that the ave...

A symmetrical trapezoidal canal is 100 km long. The bottom width is 10 m and the side slope is 1 Horizontal : 1 Vertical. The average flow depth in the canal is 2.5 m throughout th...

In the context of the effect of drainage density on the run-off generation and the hydrograph at the catchment outlet, all other factors remaining the same, pick one or more CORREC...

The ordinates of a 1-hour unit hydrograph (UH) are given below. Time (hours) 0 1 2 3 4 5 Ordinates of 1-hour UH (m 3 /s) 0 13 50 80 95 85 Time (hours) 6 7 8 9 10 11 Ordinates of 1-...

A storm with a recorded precipitation of 11.0 cm, as shown in the table, produced a direct run-off of 6.0 cm. Time from start (hours) 1 2 3 4 5 6 7 8 Recorded cumulative precipitat...

The ordinates of a one-hour unit hydrograph for a catchment are given below: $$ \begin{array}{|l|l|l|l|l|l|l|l|l|} \hline t(\text { hour }) & 0 & 1 & 2 & 3 & 4 & 5 & 6 & 7 \\ \hlin...

In Horton’s equation fitted to the infiltration data for a soil, the initial infiltration capacity is 10 mm/h; final infiltration capacity is 5 mm/h; and the exponential decay cons...

Which one of the following options provides the correct match of the terms listed in Column-1 and Column-2? Column-1 Column-2 P: Horton equation IV: Infiltration Q: Muskingum metho...

A two-hour duration storm event with uniform excess rainfall of 3 cm occurred on a watershed. The ordinates of streamflow hydrograph resulting from this event are given in the tabl...

A flood control structure having an expected life of n years is designed by considering a flood of return period T years. When T = n, and n $$\to$$ $$\infty$$, the structures hydro...

Match Column X with Column Y : Column X Column Y (P) Horton equation (I) Design of alluvial channel (Q) Penman method (II) Maximum flood discharge (R) Chezy's formula (III) Evapotr...

The probability that a 50 year flood may NOT occur at all during 25 years life of a project (round off to two decimal places), is _________.

In a catchment, there are four rain-gauge stations, P, Q, R, and S. Normal annual precipitation values at these stations are 780 mm, 850 mm, 920 mm, and 980 mm, respectively. In th...

The average surface area of a reservoir in the month of June is 20 km 2 . In the same month, the average rate of inflow is 10 m 3 /s, outflow rate is 15 m 3 /s, monthly rainfall is...

A 1-hour rainfall of 10 cm has a return period of 50 years. The probability that 1 hour of rainfall 10 cm or more will occur in each of two successive years is

An isohyet is a line joining points of

The ratio of actual evapo-transpiration to potential evapo-transpiration is in the range

During a 6-hour storm the rainfall intensity was 0.8 cm/hr on a catchment of area 8.6 km 2 . The measured runoff volume during this period was 2,56,000 m 3 . The total rainfall was...

The return period for the annual maximum flood of a given magnitude is 8 years. The probability that this flood magnitude will be executed once during the next 5 years is

Hyetograph is a graph representing

Lysimeter and Tensiometer are used to measure respectively, one of the following groups of quantities:

A tropical cyclone in a northern hemisphere is a wind stream with