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.Management Sciences
Category: Fluid Mechanics
The length of a pipe is 1 km and its diameter is 20 cm. If the diameter of an equivalent pipe is 40 cm, then its length is_____________________?
0
A. 32 km
B. 20 km
C. 8 km
D. 4 km
The wake_______________?
A. always occurs before a separation point
B. always occurs after a separation point
C. is a region of high pressure intensity
D. none of the above
If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic viscosity of that fluid in stokes is__________________?
A. 0.25
B. 0.50
C. 1.0
D. none of the above
A closed tank containing water is moving in a horizontal direction along a straight line at a constant speed. The tank also contains a steel ball and a bubble of air. If the tank is decelerated horizontally, then________________?
1. the ball will move to the front
2. the bubble will move to the front
3. the ball will move to the rear
4. the bubble will move to the rear
Find out which of the above statements are correct ?
A. (1) and (2)
B. (1)and(4)
C. (2) and (3)
D. (3) and (4)
Two pipes of same length and diameters d and 2d respectively are connected in series. The diameter of an equivalent pipe of same length is________________?
A. less than d
B. between d and 1.5 d
C. between 1.5 d and 2d
D. greater than 2d
Pascal-second is the unit of______________?
A. pressure
B. kinematic viscosity
C. dynamic viscosity
D. surface tension
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