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MCQs 1: A one dimensional flow is one which_________________?

is uniform flow is steady uniform flow takes place in straight lines involves zero transverse component of flow takes place in one dimension
Answer Explanation

MCQs 2: A pressure of 25 m of head of water is equal to_________________?

25 kN/m2 245 kN/m2 2500 kN/m2 2.5kN/m2 12.5 kN/m2
Answer Explanation

MCQs 3: If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its__________________?

specific weight specific mass specific gravity specific density none of the above
Answer Explanation

MCQs 4: 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_________________?

increase decrease remain same increase/decrease depending on depth of immersion unpredictable
Answer Explanation

MCQs 5: A liquid would wet the solid, if adhesion forces as compared to cohesion forces are________________?

less more equal less at low temperature and more at high temperature there is no such criterion
Answer Explanation

MCQs 6: The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as_________________?

meta center center of pressure center of buoyancy center of gravity none of the above
Answer Explanation

MCQs 7: The conditions for the stable equilibrium of a floating body are___________________?

the meta-center should lie above the center of gravity the center of buoyancy and the center of gravity must lie on the same vertical line a righting couple should be formed all the above are correct none of the above is correct
Answer Explanation

MCQs 8: The angle of contact in case of a liquid depends upon___________________?

the nature of the liquid and the solid the material which exists above the free surface of the liquid both of die above any one of the above none of die above
Answer Explanation

MCQs 9: Rain drops are spherical because of__________________?

viscosity air resistance surface tension forces atmospheric pressure none of the above
Answer Explanation

MCQs 10: The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is approximately____________________?

1 mm 5 mm 10 mm 20 mm 30 mm
Answer Explanation

MCQs 11: If the surface of liquid is convex, men ___________________?

cohesion pressure is negligible cohesion pressure is decreased cohesion pressure is increased there is no cohesion pressure none of the above
Answer Explanation

MCQs 12: To avoid an interruption in the flow of a syphon, an air vessel is provided__________________?

at the inlet at the outlet at the summit ay nay point between inlet and outlet none of the above
Answer Explanation

MCQs 13: The property by virtue of which a liquid opposes relative motion between its different layers is called_________________?

surface tension co-efficient of viscosity viscosity osmosis cohesion
Answer Explanation

MCQs 14: The units of dynamic or absolute viscosity are__________________?

metres2 per sec kg sec/meter newton-sec per meter newton-sec2 per meter none of the above
Answer Explanation

MCQs 15: The rise or depression of liquid in a tube due to surface tensionwim increase in size of tube will________________?

increase remain unaffected may increase or decrease depending on the characteristics of liquid decrease unpredictable
Answer Explanation

MCQs 16: Capillary action is due to the_________________?

surface tension cohesion of the liquid adhesion of the liquid molecules and the molecules on the surface of a solid all of the above none of the above
Answer Explanation

MCQs 17: The atmospheric pressure with rise in altitude decreases__________________?

linearly first slowly and then steeply first steeply and then gradually unpredictable none of the above
Answer Explanation

MCQs 18: Operation of McLeod gauge used for low pressure measurement is based on the principle of_________________?

gas law Boyle’s law Charle’s law Pascal’s law McLeod’s law
Answer Explanation

MCQs 19: In an isothermal atmosphere, the pressure___________________?

decreases linearly with elevation remains constant varies in the same way as the density increases exponentially with elevation unpredictable
Answer Explanation

MCQs 20: Which of the following instrument can be used for measuring speed of an aeroplane___________________?

Venturimeter Orifice plate hot wire anemometer rotameter pitot tube
Answer Explanation

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