**On This Page**

This set of Hydraulics and Fluid Mechanics Multiple Choice Questions & Answers (MCQs) focuses on Hydraulics And Fluid Mechanics Set 19

Q1 | A structure whose width is

- less than
- more than

Q2 | One poise is equal to

- 0.1 N-s/m2
- 1 N-s/m2
- 10 N-s/m2
- 100 N-s/m2

Q3 | According to equation of continuity,

- w1a1 = w2a2
- w1v1 = w2v2
- a1v1 = a2v2
- a1/v1 = a2/v2

Q4 | An air vessel is provided at the summit in a syphon to

- avoid interruption in the flow
- increase discharge
- increase velocity
- maintain pressure difference

Q5 | In a venturiflume, the flow takes place at

- atmospheric pressure
- gauge pressure
- absolute pressure
- none of these

Q6 | The discharge over a triangular notch is

- inversely proportional to H3/2
- directly proportional to H3/2
- inversely proportional to H5/2
- directly proportional to H5/2

Q7 | Kinematic viscosity is the product of dynamic viscosity and the density of the liquid.

- Yes
- No

Q8 | The total energy of a liquid particle in motion is equal to

- pressure energy + kinetic energy + potential energy
- pressure energy - (kinetic energy + potential energy)
- potential energy - (pressure energy + kinetic energy)
- kinetic energy - (pressure energy + potential energy)

Q9 | The velocity of flow is same at all points in the cross-section of a channel.

- TRUE
- FALSE

Q10 | A notch is used to measure

- pressure
- Disagree
- velocity
- volume

Q11 | The most efficient section of a channel is

- triangular
- rectangular
- square
- trapezoidal

Q12 | An orifice is said to be large, if

- the size of orifice is large
- the velocity of flow is large
- the available head of liquid is more than 5 times the height of orifice
- the available head of liquid is les than 5 times the height of orifice

Q13 | A weir is said to be narrow-crested weir, if the width of the crest of the weir is

- equal to
- less than
- more than

Q14 | The rise, in water level, which occurs during the transformation of the unstable shooting flow to the stable streaming flow is called hydraulic jump.

- Yes
- No

Q15 | Water is a

- real
- ideal
- newtonian
- non-newtonian

Q16 | A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a

- notch
- weir
- mouthpiece
- nozzle

Q17 | The body will sink down if the force of buoyancy is

- equal to
- less than
- more than

Q18 | In a short cylindrical external mouthpiece, the vena contracta occurs at a distance

- equal to
- one-fourth
- one-third
- one-half

Q19 | The viscosity of water at 20? C is

- one stoke
- one centistroke
- one poise
- one centipoise

Q20 | A thick liquid like a syrup has a

- lesser
- greater

Q21 | Laminar flow

- takes
- does not take

Q22 | The surface tension of mercury at normal temperature is

- same as
- lower than
- higher than

Q23 | An error of 1% in measuring head over the apex of the notch (H) will produce an error of

- 1%
- 1.50%
- 2%
- 2.50%

Q24 | The pressure measured with the help of a piezometer tube is in

- N / mm2
- N / m2
- head of liquid
- all of these

Q25 | Bulk modulus of a fluid

- remains same
- decreases
- increases