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MCQs 1: Hot wire anemometer is used to measure_______________?

discharge velocity of gas pressure intensity of gas pressure intensity of liquid
Answer Explanation

MCQs 2: Density of water is maximum at ___________________?

0°C 0°K 4°C 100°C 20°C.
Answer Explanation

MCQs 3: Property of a fluid by which its own molecules are attracted is called ________________?

adhesion cohesion viscosity compressibility surface tension
Answer Explanation

MCQs 4: The property of a fluid which enables it to resist tensile stress is known as________________?

compressibility surface tension cohesion adhesion viscosity
Answer Explanation

MCQs 5: The specific weight of water is 1000 kg/m” _______________?

at norma] pressure of 760 mm at 4°C temperature at mean sea level all the above none of the above.
Answer Explanation

MCQs 6: When the flow parameters at any given instant remain same at every point, then flow is said to be____________________?

quasi static steady state laminar uniform static
Answer Explanation

MCQs 7: The normal stress in a fluid will be constant in all directions at a point only if_________________?

it is incompressible it has uniform viscosity it has zero viscosity it is frictionless it is at rest
Answer Explanation

MCQs 8: An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is___________________?

10m/sec2 9.81 m/sec2 10.2/m sec 9.75 m/sec2 9 m/sec
Answer Explanation

MCQs 9: The surface tension of mercury at normal temperature compared to that of water is____________________?

more less same more or less depending on size of glass tube none of the above
Answer Explanation

MCQs 10: For very great pressures, viscosity of moss gases and liquids __________________?

remains same increases decreases shows erratic behaviour none of the above
Answer Explanation

MCQs 11: Viscosity of water in comparison to mercury is ______________________?

higher lower same higher/lower depending on temperature unpredictable
Answer Explanation

MCQs 12: The bulk modulus of elasticity __________________?

has the dimensions of 1/pressure increases with pressure is large when fluid is more compressible is independent of pressure and viscosity is directly proportional to flow
Answer Explanation

MCQs 13: The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to _________________?

1000 2100 2700 10,000 21,000
Answer Explanation

MCQs 14: Surface tension _____________________?

acts in the plane of the interface normal to any line in the surface is also known as capillarity is a function of the curvature of the interface decreases with fall in temperature has no units
Answer Explanation

MCQs 15: A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm2 and a volume of 0.039 m3 at 150 kg/cm2. The bulk modulus of elasticity of liquid is _________________?

400 kg/cm2 4000 kg/cm2 40 x 105 kg/cm2 40 x 106 kg/cm2 none of the above
Answer Explanation

MCQs 16: Units of surface tension are_________________?

energy/unit area distance both of the above it has no units none of the above
Answer Explanation

MCQs 17: Choose the correct relationship_________________?

specific gravity = gravity x density dynamicviscosity = kinematicviscosity x density gravity = specific gravity x density kinematicviscosity = dynamicviscosity x density hydrostaticforce = surface tension x gravity
Answer Explanation

MCQs 18: For manometer, a better liquid combination is one having______________?

higher surface tension lower surface tension surface tension is no criterion high density and viscosity low density and viscosity
Answer Explanation

MCQs 19: Alcohol is used in manometer, because___________________?
Choose the wrong statement ?

its vapour pressure is low it provides suitable meniscus for the inclined tube its density is less it provides longer length for a given pressure difference it provides accurate readings
Answer Explanation

MCQs 20: The property of fluid by virtue of which it offers resistance to shear is called____________________?

surface tension adhesion cohesion viscosity all of the above
Answer Explanation

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