11. Which of the following equations is valid for laminar flow of a fluid through packed bed?
12. Co-efficient of discharge (Cd) is defined as actual discharge/theoretical discharge and is equal to Cc . Cv; where Cc = Co-efficient of contraction and Cv = co-efficient of velocity. Cd of an orifice is usually about
13. Fanning friction factor for laminar flow of fluid in a circular pipe is
14. The distribution of shear stress in a stream of fluid in a circular tube is
15. Purpose of hydraulic accumulator is to
16. Which of the following properties of a fluid is responsible for offering resistance to shear?
17. Which of the following is a Newtonian fluid?
18. An ideal plastic substance indicates no deformation, when stressed upto yield stress, but behaves like a Newtonion fluid beyond yield stress. Which of the following is an ideal plastic?
19. Nominal size of the discharge pipe of a pump is usually __________ the nominal size of the inlet pipe.
20. Centrifugal pumps as compared to reciprocating pumps
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