**To replace a pipe of diameter D by n parallel pipes of diameter d, the formula is:**

**A.**

**B.**

**C.**

**D.**

**E.**

Options are :

- B
- C
- D
- E
- A

**Answer :**D

Hydraulics MCQ Practice Questions (Civil Engineering) Set 8

**The ratio of the percentage error in the discharge and percentage error in the measurement of head, over rectangular notch, is:**

Options are :

- 3/4
- 1/2
- 3/2
- 2/3

**Answer :**3/2

**For the two dimensional flow, the stream function is given by ? = 2xy. The velocity at a point (3, 4) is:**

Options are :

- 15 m/sec
- 10 m/sec
- 6 m/sec
- 8 m/sec
- 12 m/sec

**Answer :**10 m/sec

**In a short cylindercial external mouthpiece, the venacontracta occurs at a distance from the outlet of orifice equal to:**

Options are :

- One-fourth the diameter of the orifice
- Two-third the diameter of the orifice
- One-third the diameter of the orifice
- Diameter of the orifice

**Answer :**One-fourth the diameter of the orifice

RCC Structures Design MCQ Practice Questions (Civil Eng) Set 7

**In steady flow, which one of the following changes with time:**

Options are :

- None of these
- Pressure
- Velocity
- Density

**Answer :**None of these

**The width of a weir with end contraction, is:**

Options are :

- Equal to the width of the channel
- Less than the width of the channel
- None of these
- Half the width of the channel

**Answer :**Less than the width of the channel

**If
the pressure at the inlet of a pipe is 90 kg/cm2 and pressure drop over
the pipe line is 10 kg/cm2, the efficiency of transmission, is:**

Options are :

- 66.6%
- 77.7%
- 88.8%
- 55.5%

**Answer :**88.8%

RCC Structures Design MCQ Practice Questions (Civil Eng) Set 4

**The unit of the viscosity is:**

Options are :

- Newton-sec^(2)/m^(3)
- m^(2) per sec
- Newton sec per m^(2)
- kg sec/m^(2)

**Answer :**Newton sec per m^(2)

**The centre of pressure of a vertical plane immersed in a liquid is at:**

Options are :

- None of these
- Centre of lower edge
- Centre of higher edge
- Centroid of the area

**Answer :**None of these

**Weber number is the ratio of inertia force to:**

Options are :

- Surface tension
- Gravitational force
- Elasticity
- Viscosity

**Answer :**Surface tension

Concrete Technology MCQ Practice Questions (Civil Eng) Set 1

**The gases are considered incompressible if Match number is:**

Options are :

- Equal to 1.5
- Equal to 1.0
- Less than 0.2
- Is more than 0.5

**Answer :**Less than 0.2

**The dimensionless parameter not applicable to flowing liquids, is:**

Options are :

- Kinematic viscosity
- Friction factor
- Reynold number
- Pressure coefficient
- Weber number

**Answer :**Kinematic viscosity

**Most economical section of a circular channel for maximum velocity, is if:**

Options are :

- Wetted perimeter = 2.245 diameters
- Hydraulic mean depth = 0.304 diameter
- Depth of water = 0.810 diameter
- All the above

**Answer :**All the above

Concrete Technology MCQ Practice Questions (Civil Eng) Set 2

**The hydrostatic force acts through:**

Options are :

- Centre of pressure
- Centre of bottom edge
- Centre of top edge
- Metacentre

**Answer :**Centre of pressure

**The flow in a channel is said to be non-uniform, if:**

Options are :

- Head needed to overcome frictional reistance is less than the drop in elevation of channel bed
- All the above
- Head needed to overcome frictional resistance is more than the drop in elevation of channel bed
- Free water surface of an open channel is not parallel to the bed of channel

**Answer :**All the above

**The intensity of pressure due to sudden closure of a valve of a pipe in which water flows with velocity v, is directly proportional to:**

Options are :

- None of these
- Specific weight of water
- Bulk modulus of elasticity of water
- Square root of the bulk modulus of elasticity of water

**Answer :**Square root of the bulk modulus of elasticity of water

Theory of Structures MCQ Practice Questions (Civil Eng) Set 1

**A body of dimensions 1.5 m x 1.0 m x 2 m weighs 3000 kg in water. Its specific gravity is:**

Options are :

- 1.1
- 0.8
- 1.0
- 0.9

**Answer :**1.1

**The
flow in which each liquid particle has a definite path and the paths of
adjacent particles do not cross each other, is called:**

Options are :

- Steady flow
- Uniform flow
- Turbulent flow
- Stream line flow

**Answer :**Stream line flow

**The pressure rise due to water hammer depends upon:**

Options are :

- The elasticity of the pipe material
- The velocity of flow of water in the pipe
- Time taken to close the valve
- The length of pipe
- All of above

**Answer :**All of above

- Hydraulics MCQ Practice Questions (Civil Engineering) Set 9
- RCC Structures Design MCQ Practice Questions (Civil Eng) Set 9
- Concrete Technology MCQ Practice Questions (Civil Eng) Set 4
- Theory of Structures MCQ Practice Questions (Civil Eng) Set 3
- Irrigation MCQ Practice Questions (Civil Engineering) Set 1
- Irrigation MCQ Practice Questions (Civil Engineering) Set 5
- Theory of Structures MCQ Practice Questions (Civil Eng) Set 1
- RCC Structures Design MCQ Practice Questions (Civil Eng) Set 7
- Hydraulics MCQ Practice Questions (Civil Engineering) Set 10
- RCC Structures Design MCQ Practice Questions (Civil Eng) Set 6
- Irrigation MCQ Practice Questions (Civil Engineering) Set 3
- Theory of Structures MCQ Practice Questions (Civil Eng) Set 6