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Fluid Machines - Interview Questions and Answers

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31. If velocity is zero over l/3rd of a cross-section and is uniform over remaining 2/3rd of the cross-section, then the correction factor for kinetic energy is
A. 4/3
B. 3/2
C. 9/4
D. 27/8
Explanation:
32. The theoretical value of coefficient of contraction of a sharp edged orifice is
A. 0.611
B. 0.85
C. 0.98
D. 1.00
Explanation:
33. Least possible value of correction factor for i) kinetic energy is zero ii) kinetic energy is 1 iii) momentum is zero iv) momentum is 1 The correct statements are
A. (i) and (iii)
B. (ii) and (iii)
C. (i) and (iv)
D. (ii) and (iv)
Explanation:
34. The unit of kinematic viscosity is
A. gm/cm-sec2
B. dyne-sec/cm2
C. gm/cm2-sec
D. cm2/sec
Explanation:
35. Hot wire anemometer is used to measure
A. discharge
B. velocity of gas
C. pressure intensity of gas
D. pressure intensity of liquid
Explanation:
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