GATE Exam Questions - Section 1 (5)

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GATE Exam Questions - Section 1

There are questions available about GATE exam and in this section
you will find all the questions and problems to solve these MCQs.

33.

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

A.	Capillary potential and permeability
B.	Evapotranspiration and capillary potential
C.	Velocity in channels and vapour pressure
D.	Velocity in pipes and pressure head

Answer: Option B

Explanation:

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34.

A 40° slope is excavated to a depth of 10 m in a deep layer of saturated clay of unit weight 20 kN.m³; the relevant shear strength parameters are c_u = 70 kN/m² and φ_u = 0. The rock ledge is at a great depth. The Taylor's stability coefficient for φ_u = 0 and 40° slope angle is 0.18. The factor of safety of the slope is :

A.	2.0
B.	2.1
C.	2.2
D.	2.3

Answer: Option A

Explanation:

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35.

The Prandtl mixing length for turbulent flow through pipes is

A.	independent of shear stress
B.	a universal constant
C.	zero at the pipe wall
D.	independent of radial distance from pipe axis

Answer: Option A

Explanation:

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36.

A hydraulic turbine develops a power of 10⁴ metric horse power while running at a speed of 100 revolutions per minute, under a head of 40 m. Its specific speed is nearest to one of the following :

A.	100
B.	628
C.	523
D.	314

Answer: Option A

Explanation:

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37.

A nozzle discharging water under head H has an outlet area "a" and discharge coefficient cd = 1.0. A vertical plate is acted upon by the fluid force Fj when held across the free jet and by the fluid force Fn when held against the nozzle to stop the flow, the ratio Fj/Fn is

A.	1/2
B.	1
C.	√2
D.	2

Answer: Option B

Explanation:

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38.

A hydraulic turbine has a discharge of 5 m3/s, when operating under a head of 20 m with a speed of 500 rpm. If it is to operate under a head of 15 m, for the same discharge, the rotational speed in rpm will approximately be

A.	433
B.	403
C.	627
D.	388

Answer: Option A

Explanation:

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39.

Shear stress develops on a fluid element, if :

A.	the fluid is at least
B.	the fluid-container is subject to uniform linear acceleration
C.	the fluid is inviscid
D.	the fluid is viscous and the flow is nonuniform

Answer: Option D

Explanation:

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40.

Is 459-1978 recommends to provide certain minimum steel in a RCC beam

A.	to ensure compression failure
B.	to avoid rupture of steel in case a flexural failure occurs
C.	to hold the stirrup steel in position
D.	to provide enough ductility to the beam

Answer: Option B

Explanation:

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