**The best side slope for most economical trapezoidal section, is:**

Options are :

- None of these
- 60°
- 30°
- 45°

**Answer :**60°

RCC Structures Design MCQ Practice Questions (Civil Eng) Set 3

**A
jet projected at an angle of 45?, 40 m from the foot of a vertical
column, just reaches the top of the column. The height of the column is:**

Options are :

- 60 m
- 40 m
- 15 m
- 20 m
- 30 m

**Answer :**40 m

In Chezy's formula *V* = *C *?*mi*

Options are :

- All the above
- m is the hydraulic mean depth
- V is the mean velocity of flow
- i is the loss of head per unit length of pipe

**Answer :**All the above

**Most economical section of a triangular channel, is:**

Options are :

- Isosceles triangle with 45° vertex angle
- Equilateral triangle
- Right angled triangle
- Right angled triangle with equal sides

**Answer :**Right angled triangle with equal sides

RCC Structures Design MCQ Practice Questions (Civil Eng) Set 8

**For pipes not running full, the hydraulic mean depth is given by:**

**A.**

*m* = *r*(? - sin ?)

**B.**

**C.**

**D.**

Options are :

- D
- C
- B
- A

**Answer :**B

**Specific weight of liquid:**

Options are :

- Does not vary on any other planet
- Does not remain constant at every place
- Varies from place to place on the earth
- Remains constant at every place

**Answer :**Does not vary on any other planet

**Manning's formula is used for:**

Options are :

- Head loss due to friction in open channels
- Head loss due to friction in pipes flowing full
- Flow in open channels
- Flow in pipes

**Answer :**Head loss due to friction in open channels

Concrete Technology MCQ Practice Questions (Civil Eng) Set 5

**Pick up the correct statement from the following:**

Options are :

- When the length of the tube is three times the diameter of the internal mouth piece, the jet diameter is equal to diameter of the tube
- When the length of the tube is equal to diameter of the internal mouth piece, the jet of liquid comes out without touching the sides of the tube
- None of these

**Answer :**When the length of the tube is three times the diameter of the internal mouth piece, the jet diameter is equal to diameter of the tube
When the length of the tube is equal to diameter of the internal mouth piece, the jet of liquid comes out without touching the sides of the tube

**For
the flow of liquid from an open ended tube (or nozzle) leading to the
formation of spray of liquid drops, the number generally applied, is:**

Options are :

- Reynold number
- Weber number
- Froude number
- Mach number

**Answer :**Weber number

**Which one of the following statements is true ?**

Options are :

- The value of kinetic energy correction factor for turbulent flow lies between 1.03 to 1.06
- The practical value of kinetic energy correction factor for turbulent flow is unity
- All the above
- The value of kinetic energy correction factor for laminar flow is 2

**Answer :**All the above

Theory of Structures MCQ Practice Questions (Civil Eng) Set 2

**Fluids change the volume under external presssure due to:**

Options are :

- None of these
- Viscosity
- Plasticity
- Compressibility

**Answer :**Compressibility

**Gauge pressure is:**

Options are :

- Atmospheric pressure - absolute pressure
- None of these
- Absolute pressure + atmospheric pressure
- Absolute pressure - atmospheric pressure

**Answer :**Absolute pressure - atmospheric pressure

RCC Structures Design MCQ Practice Questions (Civil Eng) Set 5

**The length of pipe is L, velocity of flow of a liquid in the pipe is V. If t is the time in second required to close the valve, the head of pressure:**

**A.**

**B.**

**C.**

**D.**

None of these

Options are :

- D
- A
- C
- B

**Answer :**A

**In flow, the liquid particles may possess:**

Options are :

- Potential energy
- Pressure energy
- All the above
- Kinetic energy

**Answer :**All the above

**From a nozzle exposed to atmosphere, the liquid jet traverses:**

Options are :

- An elliptical path
- A circular path
- A straight line
- A parabolic path

**Answer :**A parabolic path

Concrete Technology MCQ Practice Questions (Civil Eng) Set 6

**If
the forces are due to inertia and gravity, and frictional resistance
plays only a minor role, the design of the channels is made by
comparing:**

Options are :

- Froude number
- Reynold number
- Mach number
- Weber number

**Answer :**Froude number

**A rectangular channel 6 m wide and 3 m deep and having a bed slope as 1 in 2000 is running full. If Chezy's constant C = 54.8, pick up the correct specification of the channel from the following:**

Options are :

- Velocity of flow = 1.5 m/sec
- Hydraulic mean depth = 1.5 m
- Rate of flow = 27 m^(3)/sec
- All the above

**Answer :**All the above

**In order to avoid capillary correction, the minimum diameter of a manometer used for measuring pressure, should be:**

Options are :

- 6 mm
- 8 mm
- 10 mm
- 2 mm
- 4 mm

**Answer :**6 mm

Theory of Structures MCQ Practice Questions (Civil Eng) Set 3

**A
cylinder 3 m in diameter and 4 m long retains water one side as shown
in the below figure. If the weight of the cylinder is 2000 kgf, the
vertical reaction at A is:**

Options are :

- 20,000 kgf
- 18,000 kgf
- 14,137 kgf
- 5,863 kgf

**Answer :**5,863 kgf

**To avoid the force of surface tension in an inclined manometer, the minimum angle of inclination is:**

Options are :

- 5°
- 2°
- 3°
- 4°

**Answer :**4°

**For the most economical trapezoidal open channel:**

Options are :

- Half of the top width must be equal to one of the sloping sides
- The hydraulic mean depth must be equal to half the depth of flow
- All of these
- The semicircle drawn with top width as diameter must touch the three sides of the channel

**Answer :**All of these

Hydraulics MCQ Practice Questions (Civil Engineering) Set 5

**Barometers are used to measure:**

Options are :

- Pressure in water channels, pipes etc.
- Very low pressure
- Atmospheric pressure
- Difference in pressure at two points
- Very high pressure

**Answer :**Atmospheric pressure

**Water displaced by a floating wooden block of density 0.75, 5 m long, 2 m wide and 3 m high, is:**

Options are :

- 17.5 m^(3)
- 22.5 m^(3)
- 25 km^(3)
- 20.0 m^(3)

**Answer :**22.5 m^(3)

**Kinematic viscosity of liquids by equation **

Options are :

- None of these
- Redwood viscometer
- Saybolt universal viscometer
- Engler viscometer

**Answer :**Saybolt universal viscometer

Elements of Remote Sensing MCQ Practice Questions (Civil) Set 1

**The ratio of the inertia and gravitational force acting in any flow, ignoring other forces, is called:**

Options are :

- Frode number
- Euler number
- Weber number
- Reynold number

**Answer :**Frode number

**If S is the length of the crest, H is the height of water source of a weir whose length is L and discharge is Q m3/sec, the velocity of approach Vd is:**

**A.**

?2*gH*

**B.**

**C.**

**D.**

**E.**

None of these

Options are :

- E
- D
- A
- C
- B

**Answer :**C

**A steady uniform flow is through:**

Options are :

- An expanding tube at increasing rate
- A long pipe at constant rate
- An expanding tube at constant rate
- A long pipe at increasing rate
- A long pipe at decreasing rate

**Answer :**A long pipe at constant rate

Irrigation MCQ Practice Questions (Civil Engineering) Set 5

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

Options are :

- 3/2
- 2/5
- 5/2
- 2/3

**Answer :**5/2

**The velocity distribution of viscous fluid through a circular/pipe is:**

Options are :

- Elliptical
- Parabolic
- Hyperbolic
- Circular

**Answer :**Parabolic

**If Re is the Renold's number, the coefficient of friction for laminar flow is:**

**A.**

**B.**

**C.**

**D.**

Options are :

- D
- B
- A
- C

**Answer :**D

RCC Structures Design MCQ Practice Questions (Civil Eng) Set 8

- Concrete Technology MCQ Practice Questions (Civil Eng) Set 4
- Hydraulics MCQ Practice Questions (Civil Engineering) Set 9
- Hydraulics MCQ Practice Questions (Civil Engineering) Set 3
- Hydraulics MCQ Practice Questions (Civil Engineering) Set 10
- Irrigation MCQ Practice Questions (Civil Engineering) Set 1
- Elements of Remote Sensing MCQ Practice Questions (Civil) Set 4
- Theory of Structures MCQ Practice Questions (Civil Eng) Set 5
- Irrigation MCQ Practice Questions (Civil Engineering) Set 4
- Concrete Technology MCQ Practice Questions (Civil Eng) Set 5
- Theory of Structures MCQ Practice Questions (Civil Eng) Set 2
- Elements of Remote Sensing MCQ Practice Questions (Civil) Set 3
- Elements of Remote Sensing MCQ Practice Questions (Civil) Set 5