Description : Which of the following is the unit of kinematic viscosity? (A) Pascal (B) Poise (C) Stoke (D) Faraday
Last Answer : Answer: Option C
Description : A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke's law. A particle B with diameter 20microns settling in the same oil will have a settling velocity (A) ... ) One fourth as that of A (C) Twice as that of A (D) Four times as that of A
Last Answer : (B) One fourth as that of A
Description : N. second/m2 is (A) The S.I. unit of dynamic viscosity (B) The S.I. unit of kinematic viscosity (C) Equivalent to one poise (D) Equivalent to one stoke
Last Answer : (A) The S.I. unit of dynamic viscosity
Description : The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for __________ at room temperature. (A) Air (B) Water (C) Mercury (D) Alcohol
Last Answer : (B) Water
Description : Poise is converted into stoke by (A) Multiplying with density (gm/c.c) (B) Dividing by density (gm/c.c) (C) Multiplying with specific gravity (D) Dividing by specific gravity
Last Answer : (B) Dividing by density (gm/c.c)
Description : The unit of dynamic viscosity in S.I. units is (A) N-m/s2 (B) N-s/m2 (C) Poise (D) Stoke
Last Answer : Answer: Option B
Description : The viscosity of water at 20°C is (A) One stoke (B) One centistoke (C) One poise (D) One centipoise
Last Answer : Answer: Option D
Description : Pick out the wrong conversion of absolute & kinematic viscosities. (A) 1 stoke = 1 cm2/sec (B) 1 N.sec/m2 = 10 paise (C) 1 stoke = 1 m2/sec (D) 1 m2/sec = 104 stokes
Last Answer : (C) 1 stoke = 1 m2/sec
Description : Stoke is the unit of (A) Kinematic viscosity in C. G. S. units (B) Kinematic viscosity in M. K. S. units (C) Dynamic viscosity in M. K. S. units (D) Dynamic viscosity in S. I. units
Last Answer : Answer: Option A
Description : If the specific gravity of a soil particle of 0.05 cm diameter is 2.67, its terminal velocity while settling in distilled water of viscosity, 0.01 poise, is (A) 0.2200 cm/sec (B) 0.2225 cm/sec (C) 0.2250 cm/sec (D) 0.2275 cm/sec
Last Answer : (D) 0.2275 cm/sec
Description : . One stoke (unit of kinematic viscosity) is equivalent to (A) 1 cm2 /second (B) 1 m2 /second (C) 1 gm/cm. second (D) 1 kg. m/second
Last Answer : (A) 1 cm2 /second
Description : Choose the correct relationship (A) Specific gravity = gravity × density (B) Dynamic viscosity = kinematic viscosity × density (C) Gravity = specific gravity × density (D) Kinematic viscosity = dynamic viscosity × density
Description : The ratio of absolute viscosity to mass density is known as (A) Specific viscosity (B) Viscosity index (C) Kinematic viscosity (D) Coefficient of viscosity
Description : A dash pot consists of a cylinder 10 cm in diameter in which slides a piston 12 cm long having a radial clearance of 1 mm. The cylinder is filled with oil having a viscosity of 1 poise. What will be the resistance offered ... with a velocity of 3 cm/sec a.1090 kg b.100 kg c.10900 kg d.10 kg e.50 kg
Last Answer : c. 10900 kg
Description : If G is the specific gravity of particles of diameter d, the velocity of settlement V in still water at T°C, according to Stoke's law, is (A) V = 418 (G - 1) d² [(3T + 70)/100] (B) V = 418 (G - 1) d [(3T - ... 1) d² [(2T + 70)/100] (D) V = 418 (G - 1) d 4 [(3T + 70)/100]
Last Answer : (A) V = 418 (G - 1) d² [(3T + 70)/100]
Description : Poise is the unit of (A) Surface tension (B) Capillarity (C) Viscosity (D) Shear stress in fluids
Description : Which of the following is a dimensionless parameter? (A) Angular velocity (B) Specific weight (C) Kinematic viscosity (D) None of these
Last Answer : (D) None of these
Description : The specific gravity of an oil whose specific weight is 7.85 kN/m3 , is (A) 0.8 (B) 1 (C) 1.2 (D) 1.6
Description : Compare water and oil of specific gravity 0.8 on the basis of density & viscosity.
Last Answer : Here it is not possible to find out viscosity
Description : 12. Kinematic viscosity is the product of dynamic viscosity and the density of the liquid. A) Yes B) No
Last Answer : B
Description : The unit of kinematic viscosity in S. I. units is (A) N-m/s (B) N-s/m2 (C) m 2 /s (D) N-m
Description : Kinematic viscosity is dependent upon (A) Pressure (B) Distance (C) Density (D) Flow
Description : Kinematic viscosity is equal to (A) Dynamic viscosity/density (B) Dynamic viscosity × density (C) Density/dynamic viscosity (D) 1/dynamic viscosity × density
Description : The units of kinematic viscosity are (A) Metres² per sec (B) kg sec/metre (C) Newton-sec per metre (D) Newton-sec per metre
Description : The kinematic viscosity is the (A) Ratio of absolute viscosity to the density of the liquid (B) Ratio of density of the liquid to the absolute viscosity (C) Product of absolute viscosity and density of the liquid (D) Product of absolute viscosity and mass of the liquid
Description : One poise (unit of absolute/dynamic viscosity) is equivalent to one (A) gm/cm2 . sec (B) gm/cm. sec (C) cm2 /sec (D) m2 /sec
Last Answer : (B) gm/cm. sec
Description : A Poise is the unit of measure of which of the following? w) pressure x) viscosity y) force z) mass
Last Answer : ANSWER: X -- VISCOSITY
Description : A soil sample of mass specific gravity 1.92 has moisture content 30%. If the specific gravity of solids is 2.75, the degree of saturation, is (A) 95.4 % (B) 95.5 % (C) 95.6 % (D) 95.7 %
Last Answer : Option D
Description : The fluid forces considered in the Navier Stokes equation are (A) Gravity, pressure and viscous (B) Gravity, pressure and turbulent (C) Pressure, viscous and turbulent (D) Gravity, viscous and turbulent
Description : Pick out the additive property of lube oil out of following. (A) °API gravity (B) Specific gravity (C) Viscosity (D) Flashpoint
Last Answer : (A) °API gravity
Description : The liquid used for the washing of coal in an industrial coal washery is a mixture of water and (A) Carbon tetrachloride (B) Sand (40%) (C) Mineral oil of high viscosity & specific gravity (1.6) (D) None of these
Last Answer : (B) Sand (40%)
Description : A steel bar 20 mm in diameter simply-supported at its ends over a total span of 40 cm carries a load at its centre. If the maximum stress induced in the bar is limited to N/mm2, the bending strain energy stored in the ... (A) 411 N mm (B) 511 N mm (C) 611 N mm (D) 711 N mm
Last Answer : (C) 611 N mm
Description : The drag co-efficient for a bacterium moving in water at 1 mm/s, will be of the following order of magnitude (assume size of the bacterium to be 1 micron and kinematic viscosity of water to be 10 -6m2 /s). (A) 24000 (B) 24 (C) 0.24(D) 0.44
Last Answer : (D) 0.44
Description : The specific gravity of petrol is about a. 0.65 b. 0.75 c. 0.85 d. 0.95
Last Answer : ANSWER b. 0.75
Description : A suspended particle falls through a height minutes. If the viscosity of water is and specific gravity of the particle is , the diameter of the particle is (where M is a constant factor) (A) 103M (H/t) (B) 104M (H/t) (C) 105M (H/t) (D) 102M (H/t)
Description : Capillary tube method of viscosity measurement is based on the (A) Hagen-Poiseuille’s equation (B) Stoke's law (C) Navier-stokes equation (D) None of these
Last Answer : (A) Hagen-Poiseuille’s equation
Description : The terminal velocity of a solid spherical particle falling through a stationary fluid mass in the Stoke's law range is proportional to the (A) Inverse of fluid viscosity (B) Square of particle size (C) Difference in the densities of the particle & fluid (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : The dimension of diffusivity is same as that of the (A) Density (B) Molal concentration (C) Kinematic viscosity (D) Velocity head
Last Answer : (C) Kinematic viscosity
Description : Diffusion co-efficient generally depends upon the temperature, pressure & the nature of the components of the system. Its dimension is not the same as that of the (A) Mass transfer co-efficient (B) Thermal diffusivity (C) Kinematic viscosity (D) Volumetric diffusivity
Last Answer : (A) Mass transfer co-efficient
Description : Which of the following has the same dimension as mass diffusivity? (A) Momentum flux (B) Kinematic viscosity (C) Thermal diffusivity (D) Both (B) and (C)
Last Answer : (D) Both (B) and (C)
Description : Dimension of mass diffusivity is the same as that of (A) Kinematic viscosity (B) Dynamic viscosity (C) Surface tension (D) Pressure
Last Answer : (A) Kinematic viscosity
Description : The ratio of kinematic viscosity to thermal diffusivity is called the __________ number. (A) Peclet (B) Prandtl (C) Stanton (D) Nusselt
Last Answer : (B) Prandtl
Description : . Boiling point elevation for a strong and concentrated solution is found by Duhring's rule, which states that at the same pressure, the boiling point of a solution is a linear function of the __________ of pure water. (A) Boiling point (B) Dynamic viscosity (C) Kinematic viscosity (D) Density
Last Answer : (A) Boiling point
Description : Which of the following is not dimension-less? (A) Froude number (B) Kinematic viscosity (C) Pressure co-efficient (D) None of these
Last Answer : (B) Kinematic viscosity
Description : The dimension of kinematic viscosity is (A) ML -2T -1 (B) L 2T -1 (C) ML -2T -2 (D) None of these
Last Answer : (B) L 2T -1
Description : Pick out the wrong statement: (A) Greater is the kinematic viscosity of the liquid, greater is the thickness of the boundary layer (B) Blowers develop a maximum pressure of 2 atmospheres ( ... factor in case of turbulent flow of liquids in pipe depends upon relative roughness & Reynolds number
Last Answer : (C) Friction losses in pipe fittings are generally expressed in terms of velocity heads
Description : Which of the following is not a dimension-less parameter? (A) Pressure-co-efficient (B) Froude number (C) Kinematic viscosity (D) Weber number
Description : The co-efficient of performance (COP) of a refrigerating system, which is its index of performance, is defined as the ratio of useful refrigeration to the net work. The units of __________ and COP are the same. (A) Kinematic viscosity (B) Work (C) Temperature (D) None of these
Description : What Is Kinematic Viscosity?
Last Answer : The kinematic viscosity is the ratio of absolute viscosity to the density of the liquid.
Description : One poise is equal to (A) 0.1 N-s/m2 (B) 1 N-s/m2 (C) 10 N-s/m2 (D) 100 N-s/m2