MCQ
1961. In industrial applications hydraulic fluids have viscosity grade ranging--
46 t0 68
70 to 95
15 to 44
none
1962. The mercury does not wet the grass. This is due to the property of the liquid known as--
cohesion
viscosity
adhesion
surface tension
1963. Define Viscosity.
Resistance to flow of an object
Resistance to flow of air
Resistance to flow of fluid
Resistance to flow of heat
1964. What is the viscosity of water at 30°C?
80.1
0.801
801
0.081
1965. Law of intensity of pressure-
P=WH
P=mH
P=ωH
P=TH
1966. The pressure at any given point of a non-moving fluid is called the-
gauge pressure
atmospheric pressure
differential pressure
hydrostatic pressure
1967. Which property decides the behavior of fluid when mind with water?
pour point
viscosity
demursibuty
oxidation
1968. The ratio of specific weight of a liquid to the specific weight of pure water at standard temperature called-
density of liquid
specific gravity of liquid
compressibility of liquid
surface tamsion of liquid
1969. The property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid is called?
Surface tension
Capillarity
Compressibility
Viscosity
1970. Which of the following is an extensive property?
Volume
Pressure
viscocity
All of the above
1971. Which among these devices are the best suited for the measurement of high pressure liquids with high accoracy?
Dend weight gauge
Vacuum gauge
Manganin wire pressure
lonization gauge
1972. The viscosity of water is-than mercury.
more
slightly less
less
nearly equal
1973. Reynold's number is the ratio the inertia force to the-
surcace tension force
viscous force
gravity force
elastic force
1974. Water is-Liquid.
a compressible
absolute pressure
an incompressible
None of these
1975. The centre of gravity of the voulme of the liquid displaced is called-
centre of pressure
centre of buoyance
Meta centre
None of these
1976. Viscosity of air-
decrease with increase of temperature
increase with increase of temperature
does not have any effect of temperature
depends on pressure
1977. The kinenatic viscosity is the-
ratio of absolute viscosity to the density of the liquid
ratio of density of the liquid to the absolute viscosity
product of absolute viscosity and density of
product of absolute viscosity and mass of the the liquid
1978. The atmospheric pressure at sea level is-
1.03 kg/cm²
760mm of mercury
10.3m of water
all of these
1979. The flow in a pipe is turbulent when Reynold number is-
Less than 2000
between 2000 and 2800
more than 2800
none of the above
1980. Falling drops of water hecome spheners due to the property of--
surface tension of water
compressibility of water
capillarity of water
viscosity of water