Physics
Fluid Dynamics
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#49 When the body moves through the fluid, the fluid friction is
A) Less than sliding friction
B) Zero
C) Greater than sliding friction
D) Equal to sliding friction
#50 Terminal velocity is
A) Uniform
B) Maximum
C) Uniform and maximum
D) Neither uniform nor maximum
#51 The maximum constant velocity of an object falling vertically downward is called
A) Terminal velocity
B) Instantaneous velocity
C) Average velocity
D) Uniform velocity
#52 The drag force is given by
A) Newton’s law
B) Pascal’s law
C) Gauss’s law
D) Stoke’s law
#53 When the weight of the object is balanced by the drag force, the object will move with
A) Increasing speed
B) Decreasing speed
C) Constant speed
D) Zero speed
#54 The blood pressure in the vessels is always
A) Less than atmospheric pressure
B) Greater than atmospheric pressure
C) Equal to atmospheric pressure
D) 760 mm of Hg
#55 The effect of the decrease in pressure with the increase of the speed of the fluid in a horizontal pipe is known as
A) Bernoulli’s effect
B) Torricelli’s effect
C) Venture effect
D) All of these
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