ECAT Pre Computer Science Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

Try The MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

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ECAT Physics Chapter 6 Fluid Dynamics

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Question # 1

When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:

Question # 2

Matter is made up of very tiny particles called

Question # 3

The mass of fluid passing through any cross-section per unit time is called

Question # 4

The terminal velocity of water droplet of radius 1 x 10-4m and desity 1000 kg m-3descending through air of viscosity 19 x 10-6kg. m-1 s-1 is

Question # 5

Above a certain velocity of a fluid is called

Question # 6

Liquids and gasses have

Question # 7

The density of water is 103kg/m3. The water pressure on a submarine is 2.0 x 107N/m2. The depth of the submarine below the surface of the water, in maters, is approximately

Question # 8

The law of conservation of energy gives us

Question # 9

In a normal healthy person the value of systolic pressure is

Question # 10

Which of the following options states the names of fluids in the order of increasing viscosity?

Question # 11

Stoke;s law is not applicable when the speed of the object moving through a fluid is:

Question # 12

The application of Bernoulli's equation is

Question # 13

Stock's law holds for:

Question # 14

Blood pressure is measured in torr. Which of the following units could belong to torr?

Question # 15

A fluid at a certain point has 50 J of potential energy per unit volume, 75 J of kinetic energy per unit volume,and 35 J of pressure energy per unit volume. the total energy of the fluid is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area
A. decreases
B. increases
C. becomes zero
D. none of them
2 The internal pressure of the blood is
A. less than the external atmospheric pressure
B. greater than the external atmospheric pressure
C. equal to the external atmosphericpressure
D. none of them
3 If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term
A. P
B. 1/2 fv2
C. pgh
D. none of them
4 Stock's law holds for:
A. Motion through free space
B. Motion through viscous medium
C. Bodies of all shapes
D. None of these
5 According to slok's law, drag force depends on
A. Radius of the spherical body
B. Terminal velocity of body
C. Coefficient of viscosity
D. All of above
6 The pressure will be low where the speed of the fluid is
A. Zero
B. High
C. Low
D. Constant
7 With the increase of temperature viscosity
A. Increase
B. Decrease
C. Remains same
D. Doubles
8 Viscosity of water is ______ that of air but ___ that of plasma.
A. More, more
B. Less, more
C. Less, less
D. More, less
9 What is another name for laminar flow?
A. streamline
B. unsteady flow
C. turbulent flow
D. both (a) and (b)
10 The un-steady streamline flow is called
A. laminar flow
B. turbulent flow
C. both of them
D. none of them

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