List of top Water Science and Technology Questions

Ten sprinklers are spaced equally at 10 meters on a lateral. The laterals are spaced 1000 cm on the main line. The recommended fertilizer dose is 120 kg/ha. The amount of fertilizer to be applied at each setting is

An ideal fluid has one of the following characteristics

The following statements are made with respect to capillaries and factors affecting it
A. Capillaries are directly proportional to surface tension
B. Capillaries are inversely proportional to density of liquid
C. Capillaries are directly proportional to diameter of the tube
D. Capillaries are inversely proportional to surface tension
E. Capillaries are directly proportional to density of liquid
Choose the correct answer from the options given below:

If the kinematic viscosity of a liquid is 6 stokes and specific gravity is 1.9, then what would be its dynamic viscosity?

Venturimeter works on the principle of

Continuity equation of fluid flow is

An urn contains 15 black and 10 white balls. Two balls are drawn from the urn one after another without replacement. What is the probability that both drawn balls are black?

The mean of n observations is \(\bar{x}\). If one observation \(x_{n+1}\) is added and the new mean of n+1 observations was found to be same as previous. What was the value of \(x_{n+1}\)?

The arithmetic mean of the series \(1, 2, 4, 8, 16, \dots, 2^n\) is

The order and degree of the differential equation \(\frac{d^2 y}{dx^2} + \sqrt{x + \left(\frac{dy}{dx}\right)^3 = 0\) is}

\(\int_0^{\pi/2} \cos x \cdot e^{\sin x} \, dx\) is equal to

Two persons appear for an interview for two posts. The probability of the person A's selection is 1/5 and that of B is 1/7. The probability of atleast one of them is selected

Water requirement of a crop includes

If \(f(\theta) = e^{\sin \theta\), then \(f'(\theta) = 0\) for which value of \(\theta\)}

If \(x^y = e^{x-y}\), \(\frac{dy}{dx} = ?\)

If x is real, the minimum value of \(f(x) = x^2 - 8x + 17\) would be

Reference crop evapotranspiration (\(\text{ET}_0\)) is dependent on

Lysimeter measures

Which of the following is provided to check the piping through the foundation of a soil conservation structure?
A. Toe wall
B. Cutoff wall
C. Wing wall
D. Headwall
Choose the correct answer from the options given below

Given below are the two statements.
Statement I: In case of any kind of water harvesting embankment is constructed across the flow in a river or channel; creep theory states that piping will always occur along the line of creep inside the foundation of the structure
Statement II: Weighted creep ratio is an indicator to decide or design creep length, and it remains a ratio of weighted creep distance and the associated head
In light of the above statements, choose the most appropriate answer from the options given below

Given below are the two statements.
Statement I: Major functional uses of drop spillways are to control stream bed gradient, to serve as inlet/outlet, to control tail water at outlet, and also to serve as a reservoir.
Statement II: 'Stability' and 'Non-Clogging of Weir' cannot be considered as advantages of drip (drop) spillways.
In light of the above statements, choose the most appropriate answer from the options given below

During agricultural water balances, the quantitative relativity of values for 'Consumptive Use (CU)' and 'Evapo-Transpiration (ET)' could be accurately expressed by which one of the following statements?

Irrigation scheduling for a 1 ha rice field is planned in such a way that the amount of irrigation to be provided per day is equal to the amount of ET/day. On a day if 1 cm of ET was observed, how much of water is to be used for irrigation on that day?

A terrace is being proposed to be constructed for a land slope of 20% medium-textured soil with 0.5 m depth of cut. What would be the width of the terrace if the terrace cut is vertical?

Given below are the two statements.
Statement I: Porous shelter-belt is more effective than dense shelter-belt in controlling wind erosion
Statement II: Tillage operation should be carried out across the prevailing wind direction.
In light of the above statements, choose the most appropriate answer from the options given below