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Test: Fluid Mechanics- 2 - Civil Engineering (CE) MCQ


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20 Questions MCQ Test GATE Civil Engineering (CE) 2025 Mock Test Series - Test: Fluid Mechanics- 2

Test: Fluid Mechanics- 2 for Civil Engineering (CE) 2024 is part of GATE Civil Engineering (CE) 2025 Mock Test Series preparation. The Test: Fluid Mechanics- 2 questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Fluid Mechanics- 2 MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Fluid Mechanics- 2 below.
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Test: Fluid Mechanics- 2 - Question 1

What is the absolute pressure at A measured by an open tube manometer as shown in the figure below? (Assume atmospheric pressure as 103 kN/m2; SA and SB are the specific gravities of the two fluids)

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Test: Fluid Mechanics- 2 - Question 2

The coefficient of contraction for an orificemeter is 0.74. Area of throat of orificement is 95.6 mm2. Find the value of diameter of vena-contracta formed in this pipe and orificemeter arrangement 

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Test: Fluid Mechanics- 2 - Question 3

For the given pipe length with area variation the total energy line and hydraulic line will be

Test: Fluid Mechanics- 2 - Question 4

The values of friction factor in mis judge by +25% in using Darcy equation for the same head loss the error in discharge calculation will be

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Test: Fluid Mechanics- 2 - Question 5

The separation of boundary layer is a phenomenon in which the boundary layer gets detached from the wall due to progressive deceleration of flow. The boundary layer separation occur when

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Test: Fluid Mechanics- 2 - Question 6

The velocity distribution in laminar flow through pipe follows a parabolic law altering a maximum velocity at the pipe axis. The Hagenpoiseuille equation which given this type of flow may be expressed as

Test: Fluid Mechanics- 2 - Question 7

A pipe line carrying water has surface protrusions of average height 0.10 mm. If the shear stress developed is 7.85 N/m2, then the pipe surface will act as

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Since roughness value lies between 4 and 100 the pipe act as in transition.

Test: Fluid Mechanics- 2 - Question 8

A water jet of 5 cm diameter moves with a constant velocity of 20 m/s and strikes a stationary and symmetrical curved plate at the centre. If the jet is deflected through an angle of 120° at the inlet and of the current plate, the force exceeded by the water jet in the direction of jet will be

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Test: Fluid Mechanics- 2 - Question 9

A centrifugal pump is required to pump water to an open water tank situated 4 km away from the location of the jump through a pipe of diameter 0.2 m having Darcy’s friction factor of 0.01. The average speed of water in the pipe is 2 m/s. If it is to maintain a constant head of 5 m in the tank, neglecting other minor losses, the absolute discharge pressure at the pump exit is

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Test: Fluid Mechanics- 2 - Question 10

A Francis turbine working at 400 rpm has a unit speed of 50 rpm and develops 500 kW of power. What is the effective head under which this turbine operates?

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Test: Fluid Mechanics- 2 - Question 11

Water flows through a horizontal conical pipe 12 m long and having a diameter of 20 cm at the inlet and 15 cm at the discharge end. A constant discharge of 40 lit/sec through the pipe. The loss of head due to pipe friction will be (f = 0.04)

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Test: Fluid Mechanics- 2 - Question 12

A single stage centrifugal pump has an impeller of 30 cm diameter which rotates at 1780 rpm and discharge 4000 lit/min to a height of 25 m at an efficiency of 70% the no. of stages required of a multistage similar pump to lift 5000 lit/min to 175 m at 1500 rpm will be

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Test: Fluid Mechanics- 2 - Question 13

A Kaplan turbine produces 38,700 HP while working under a head of 11.75 m. The turbine is set such that the inlet of the draft tube is 0.65 m below the tail race level. The draft tube inlet and outlet areas are 38m2 and 54.7 m2. Assuming a turbine efficiency of 0.90 and draft tube efficiency of 0.79, the pressure at the inlet to the draft tube, in meters of water is

Test: Fluid Mechanics- 2 - Question 14

A centrifugal pump is discharging 4500 lit/sec and operates at 1800 rpm against a head of 35 m. The power input to the pump is 3 kW. If this pump is required to operate at 1200 rpm, what will be the power input to the pump?

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Test: Fluid Mechanics- 2 - Question 15

A conical draft tube having diameter at the top as 2 m and pressure head at 7 m of water (vacuum), discharges water at the outlet with a velocity of 1.2 m/s at the rate of 25 m3/s. If atmospheric pressure head is 10.3 m of water and losses between the inlet and outlet of the draft tubes are negligible, find the length of draft tube immersed in water. Total length of tube is 5m,

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Test: Fluid Mechanics- 2 - Question 16

Find the power required to tow length wise a plate 1.2 m wide and 3 m long at a velocity of 2.4 m/s in water at 23°C (νwater = 0.9 × 10−6 m3/s) 

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Test: Fluid Mechanics- 2 - Question 17

2 pipes of equal length are connected in series. The diameter of second pipe is two times that of first pipe. Ratio of frictional head loss of first to that of second will be

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Test: Fluid Mechanics- 2 - Question 18

A pressure gauge is installed in front of a valve on a water pipe of diameter D = 50 mm. When the valve is closed the gauge reads 6 atm. When the valve is opened the reading drops to 2 atm. The rate of discharge of water in the pipe line will be

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Test: Fluid Mechanics- 2 - Question 19

A sliding gate 3 m wide and 1.5 m high lies in vertical plane and has a coefficient of friction of 0.20 between itself and guides. If the gate weights 19.6 kN and if upper edge is at a depth of 10 m then the vertical force required to raise the gate will be

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Test: Fluid Mechanics- 2 - Question 20

A solid sphere (diameter 6 mm) is rising through oil (mass density 900 kg/m3, dynamic viscosity 0.7 kg/m-s) at a constant velocity of 1 cm/s. What is the specific weight of the material from which the sphere is made? (Take g = 9.81 m/s2)

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