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.Management Sciences
Category: Hydraulics and Fluid Mechanics
A metal with specific gravity of o floating in a fluid of same specific gravity a will___________________?
A. sink to bottom
B. float over fluid
C. partly immersed
D. be fully immersed with top surface at fluid surface
E. none of the above
The increase of temperature results in_________________?
A. increase in viscosity of gas
B. increase in viscosity of liquid
C. decrease in viscosity of gas
D. decrease in viscosity of liquid
E. A. and D. above
Select the correct statement ?
A. Local atmospheric pressure depends upon elevation of locality only
B. Standard atmospheric pressure is the mean local atmospheric pressure a* sea level
C. Local atmospheric pressure is always below standard atmospheric pressure
D. A barometer reads the difference be-tween local and standard atmospheric pressure
E. Gauge piessure is equal to atmospheric pressure plus instrument reading
The total energy of each particle at various places in the case of perfect incompres sible fluid flowing in continuous sream________________?
D. keeps on increasing
B. keeps on decreasing
C. remains constant
D. may increase/decrease
E. unpredictable
Which of the following instruments is used to measure flow on the application of Bernoulli’s theorem __________________?
A. Venturimeter
B. Orifice plate
C. nozzle
D. pitot tube
E. all of the above
The stress-strain relation of the newtoneon fluid is________________?
A. linear
B. parabolic
C. hyperbolic
D. inverse type
E. none of the above
If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be_________________?
A. higher than the surface of liquid
B. the same as the surface of liquid
C. lower than the surface of liquid
D. unpredictable
E. none of the above
A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will__________________?
A. increase
B. decrease
C. remain same
D. increase/decrease depending on depth of immersion
E. unpredictable
Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface will be ___________________?
A. 1000 kg
B. 4000 kg
C. 2000 kg
D. 8000 kg
E. 16000 kg
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