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.Management Sciences
Category: Fluid Mechanics
Choose the wrong statement ?
A. any weight, floating or immersed in a liquid, is acted upon by a buoyant force
B. Buoyant force is equal to the weight of the liquid displaced
C. The point through which buoyant force acts, is called the center of buoyancy
D. Center of buoyancy is located above the center of gravity of the displaced liquid v
E. Relative density of liquids can be determined by means of the depth of flotation of hydrometer
Dimensions of surface tension are___________________?
A. MlL°T2
B. MlL°Tx
C. MlL r2
D. MlL2T2
E. MlL°t
The flow in which conditions do not change with time at any point, is known as_________________?
A. one dimensional flow
B. uniform flow
C. steady flow
D. turbulent flow
E. streamline flow
A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal to_________________?
A. 10 kg
B. 100 kg
C. 1000 kg
D. 1 kg
E. 10,000 kg
Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the_________________?
A. force of adhesion
B. force of cohesion
C. force of friction
D. force of diffusion
E. none of die above
Pressure of the order of 10″‘ torr can be measured by__________________?
A. Bourdon tube
B. Pirani Gauge
C. micro-manometer
D. ionisastion gauge
E. McLeod gauge
Metacentric height is the distance between the metacentre and_______________?
A. water surface
B. center of pressure
C. center of gravity
D. center of buoyancy
E. none of the above
To avoid an interruption in the flow of a syphon, an air vessel is provided__________________?
A. at the inlet
B. at the outlet
C. at the summit
D. ay nay point between inlet and outlet
E. none of the above
Pitot tube is used for measurement of_________________?
A. pressure
B. flow
C. velocity
D. dsscharge
E. viscosity
Cavitation is caused by_____________________?
A. high velocity
B. high pressure
C. weak material
D. low pressure
E. low viscosity
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