LIVE EXAM FLUID MECHANICS (12-04-2019 to 13-04-2019)

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10 questions
• Q1
The kinematic viscosity is the
ratio of absolute viscosity to the density of the liquid
product of absolute viscosity and mass of the liquid
ratio of density of the liquid to the absolute viscosity
product of absolute viscosity and density of the liquid
30s
• Q2
The Reynold's number of a ship is .........................to its velocity and length
directly proportional
inversely proportional
Independant
Data insufficient
30s
• Q3
Which of the following denotes the effect of compressibility in fluid flow ?
Weber number
Euler number
Reynolds number
Mach number
30s
• Q4
Laminar sublayer exists in
Transition Zone
None of these
Laminar boundary layer region
Turbulent boundary layer region
30s
• Q5
Energy loss in an orificemeter is ....... that in a venturimeter.
Data insufficient
More than
Depends on flow rate
Less than
30s
• Q6
The ratio of average fluid velocity to the maximum velocity in case of laminar flow of a Newtonion fluid in a circular pipe is
0.5
4
1
2
30s
• Q7
Co-efficient of velocity is ................. the coefficient of discharge
Less than
More than
Not related to
Depends on flow rate
30s
• Q8
Check valves are used
at high pressure
in bends
for unidirectional flow
for controlling water flow
30s
• Q9
The centre of pressure is
Depends on fluid density
Anywhere on the body
Always above the centre of gravity of the area
Always below the centre of gravity of the area
30s
• Q10
With increase in temperature, the vapor pressure of liquids
Remains constant
Depends on liquid
Increases
Decreases
30s

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