### Hydraulics And Fluid Mechanics Set 19

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