Hydraulics and Fluid Mechanics - Data Intensity 3 Multiple Questions and Answers.




6.If the fluid has specific weight of 10N/m3 for a volume of 100dm3 on a planet which is having acceleration due to gravity 20m/s2 , what will be its specific weight on a planet having acceleration due to gravity 4m/s2?
A. 5 N/m3
B. 50 N/m3
C. 2 N/m3
D. 10 N/m3

7.Should Specific Wieght of incompressible fluid only be taken at STP?
A. Yes, as specific weight may show large variation with temperature and pressure
B. No, it can be taken for any temperature and pressure
C. It should be taken at standard temperature but pressure may be any value
D. It should be taken at standard pressure but temperature may be any value

8.An instrument with air as fluid was involved in some experiment( specific volume was the characteristic property utilizewhich was conducted during day in desert. Due to some reason experiment couldn�t be conducted during day and had to be conducted during night. However there were considerable errors in obtained values. What might be the reason of these errors?
A. It was human error
B. It was instrumental error
C. Error was due to the fact that experiment was conducted at night
D. None of the mentioned

9.A stone weighed 177 N on earth. It was dropped in to oil of specific gravity 0.8 on a planet whose acceleration due to gravity is 5m/s2. It displaced oil having weight of 100N. What was the volume of oil displaced by the stone?
A. 25 Litres
B. 15 Litres
C. 25 m3
D. None of the mentioned

10.An compressible fluid�s specific gravity was measured on earth, on a planet having acceleration due to gravity 5.5 times that of earth, and in space at STP. Where will it be having highest value?
A. on the earth
B. on the planet
C. in the space
D. it will be constant everywhere

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