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.Management Sciences
Category: Hydraulics and Fluid Mechanics
Hot wire anemometer is used to measure_______________?
A. discharge
B. velocity of gas
C. pressure intensity of gas
D. pressure intensity of liquid
The vapour pressure over the concave surface is__________________?
A. less man the vapour pressure over the plane surface
B. equal to the vapour pressure over the plane surface
C. greater than the vapour pressure over the plane surface
D. zero
E. none of the above
Flow of water in a pipe about 3 meters in diameter can be measured by_________________?
A. orifice plate
B. venturi
C. rotameter
D. pitot tube
E. nozzle
The units of viscosity are__________________?
A. metres2 per sec
B. kg sec/metre
C. newton-sec per metre2
D. newton-sec per metre
E. none of the above
The density of water is 1000 kg/m3 at __________________?
A. 0°C
B. 0°K
C. 4°C D. 20°C
E. all temperature
A balloon lifting in air follows the following principle_________________?
A. law of gravitation
B. Archimedes principle
C. principle of buoyancy
D. all of the above
E. continuity equation
A model of a reservior is drained in 4 mts by opening the sluice gate. The model scale is 1: 225. How long should it take to empty the prototype ?
A. 900 minutes
B. 4 minutes
C. 4 x (225)3/2 minutes
D. 4 (225)1/3 minutes
E. 4 x V225 minutes
For similarity, in addition to models being geometrically similar to prototype, the following in both cases should also be equal__________________?
A. ratio of inertial force to force due to viscosity
B. ratio of inertial force to force due to gravitation
C. ratio of inertial force to force due to surface tension
D. all the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity
The volumetric change of the fluid caused by a resistance is known as_________________?
A. volumetric strain
B. volumetric index
C. compressibility
D. adhesion
E. cohesion
The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is ______________________?
A. 2.4 m
B. 3.0 m
C. 4.0 m
D.”2.5 m
E. 5.0 m
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