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GATE 2019 Revision Test 2 (HYDRO+IRR+FM+SOM+BM+CM)

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Question 1

The critical exit gradient suggested in Khosla’s theory of design of wiers and barrages is

Question 2

What is the regime scour depth for a channel in soil with silt factor 1.3 and carrying 8.2 m3/s/m of discharge intensity in accordance with Lacey’s regime theory?

Question 3

A hydraulically efficient trapezoidal channel section has a uniform flow depth of 2m. The bed width (expressed in m) of the channel is __________ .

Question 4

Consider the following conditions and select the correct option:
1) Fluid is real
2) Steady flow
3) Fluid should follow Newton’s law
4) Pressure is constant on fluid
5) Flow is incompressible
Which of the conditions does Bernoulli equation follows?

Question 5

Which component should not be in greater content for a durable structure?

Question 6

An infiltration gallery is placed at a depth of 5 m from the ground water table, The coefficient of permeability of soil of the aquifer is 100m/day. The drawdown of the gallery should not exceed 3 m. Find the length of the gallery if 200 m3 of water is required to be obtained per day. Assume the radius of influence to be 80 m.

Question 7

A catchment having an area of 150 km2 has the ø index 0.3 cm/hr. The base flow at the outlet is 10m3/s. One hour unit hydrograph of the catchment area is triangular in shape with a time base of 20 hours. The peak ordinate occurs at 8 hours.
If a rainfall of 4.5 cm occurs in 1 hour, then the peak ordinate of the flood hydrograph will be:

Question 8

What is the moisture depth available for evapotranspiration in root zone of 1.5m depth soil, if the dry weight of soil is 1.5 g/cc, field capacity is 30% and permanent wilting point is 10%?

Question 9

A horizontal nozzle of 30 mm diameter discharges a steady jet of water into the atmosphere at a rate of 15 liters per second. The diameter of inlet to the nozzle is 100 mm. The jet Impinges normal to a flat stationary plate held close to the nozzle end. Neglecting air friction and considering the density of water as 1000 kg/m3, force exerted by the jet (in N) on the plate is _______

Question 10

A fluid is stored in a container. The fluid can be approximated as an ideal fluid having no viscous effect. The pressure inside the fluid is 2 Mpa. The container is suddenly compressed by uniform force from outside and as a result of this the volume decreases by 2m3 . Initial volume of the of the container is 20m3. Find the isothermal bulk modulus of the fluid.

Question 11

For a simply supported beam a load of W is acted upon at point B that is between the end point A and C. The distance between A and B is 'a' unit and that between B and C is 'b' unit.The point of maximum deflection and its expression is

Question 12

Best method to measure very stiff concrete (very low workability concrete) is?

Question 13

For the above truss, the member AC is large by 2mm. The magnitude of vertical displacement of joint C is____________ mm.

All member of the truss is made of same material having axial rigidity AE.

Question 14

Two bars AO and BO are of uniform area `A' each and are hinged at 0 as shown in Fig.. A load W is applied at O.

The vertical deflection of O will be

Question 15

What is the vertical displacement at C?
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Jan 6ESE & GATE CE