Fluid-mechanics Questions Set 69:
Calculate the density of 1 litre of a liquid having specific weight 7000n/m3.
Solution:
Determine the specific gravity of a fluid having viscosity 0.05 poise and kinematic viscosity 0.035 stokes.
Solution:
The pressure drop for a relatively low Reynolds number flow in a 600 mm, 30 m long pipeline is 70 kPa. What is the wall shear stress?
Solution:
What is the equation for calculating hydraulic power?
Solution:
The length of a fluid film with a surface tension of 62.5 N/m is increased by 10 mm. Then, how much work is required per unit width to change the length?
Solution:
Manny has a liquid with a kinematic viscosity of 7.8 stokes and a specific gravity of 1.86. Determine the viscosity of the liquid (in poise).
Solution:
Two horizontal plates are placed 1.25cm apart, the space between them being filled with oil of viscosity 14 poise. Calculate the shear stress in oil if upper plate is moved with the velocity of 2.5m/s.
Solution:
Which among the following is not an assumption in the Bernoulli's Equation?
Solution:
A submarine experiences a pressure of 5.05 x106 Pa at depth of d1 in a sea. When it goes further to a depth of d2, it experiences a pressure of 8.08 x 106 Pa. Then d1 – d2 is approximately (density of water = 103 ms-2 and acceleration due to gravity = 10 ms-2)
Solution:
A laboratory uses a tube made up of glass with a diameter of 2.8 mm. The tube is immersed in mercury. The surface tension of mercury is 0.62 N/m. Take the specific gravity for mercury as 13.56, and the angle of contact is 140°. Find the capillary rise in the glass tube.
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