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

A high concentration of red blood cells increases its viscosity from

Question # 2

Pressure exerted by a gas on the walls of its container in due to

Question # 3

Blood pressure is measured by the instrument

Question # 4

The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is

Question # 5

Bernoulli's equation is applicable for

Question # 6

The equation of continuity
A1V1= A2V2is for the flow of

Question # 7

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

Question # 8

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

Question # 9

Surface tension of water is due to

Question # 10

The velocity of falling raindrop attains limited value because of

Question # 11

The body passing a viscous medium affected by:

Question # 12

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

Question # 13

Rate of flow can be expressed in

Question # 14

Substances that flow easily have

Question # 15

Fluids resist force, This property is called

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Stoke;s law is not applicable when the speed of the object moving through a fluid is:
A. Zero
B. Small
C. Large
D. None of these
2 If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity
A. v/A = constant
B. A/v = constant
C. Av = constant
D. None
3 What is another name for laminar flow?
A. streamline
B. unsteady flow
C. turbulent flow
D. both (a) and (b)
4 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
5 One torr is equal to
A. 13.33 N/m2
B. 760 N/m2
C. 760 mm Hg
D. 133.3 N/m2
6 In the case of an incompressible fluid in stead flow the net rate of flow of mass entering one end of the tube of flow is equal to the net rate of flow of mass leaving the other end. This equation is called
A. Quadratic equation
B. Equation of discontinuity
C. Equation of continuity
D. None of the above
7 Deep water almost runs still when surface water flow in rivers. What does it explains
A. Magnus effect
B. Equation of continuity
C. Surface energy
D. Bernoulli's equation
8 The smooth or steady streamline flow is known as
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
9 Pressure exerted by a gas on the walls of its container in due to
A. adhesion between the gas molecules and the container
B. cohesion between the gas molecules and the container
C. collision between the gas molecules and the container
D. surface tension of the gas
10 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
A. 200 m
B. 11000 m
C. 2000 m
D. 8000 m

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