ECAT Pre Engineering Physics Chapter 6 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

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

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Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

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Question # 1

Substances that do not flow easily have

Question # 2

What is another name for laminar flow?

Question # 3

The maximum drag force on a falling sphere is 9.8 N, it weight is

Question # 4

When the speed of a body in a fluid increases then the drag force

Question # 5

Blood is an

Question # 6

The value for systolic blood pressure for a normal healthy person is

Question # 7

Fog droplets are suspended in air when their weight is balanced by:

Question # 8

A massive object falls through a fluid:

Question # 9

The analysis of fluid motion becomes simplified by using

Question # 10

The density of blood is nearly equal to that of

Question # 11

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

Question # 12

With increase of temperature, the viscosity of liquid and gases

Question # 13

The velocity of falling raindrop attains limited value because of

Question # 14

Viscosity of water is ______ that of air but ___ that of plasma.

Question # 15

The resistance offered by a fluid to a solid moving inside it is called:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 Matter is made up of very tiny particles called
A. Atoms
B. Molecules
C. Ions
D. None of these
3 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
4 Which of the following options states the names of fluids in the order of increasing viscosity?
A. mercury, motor oil, methanol
B. methanol, mercury, motor oil
C. motor oil, mercury, methanol
D. methanol, motor oil, mercury
5 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
6 N s m-2is unit of:
A. Drag force
B. Pressure
C. Surface tension
D. Coefficient of viscosity
7 In deriving the Bernoulli's equation, we assume that the fluid is
A. incompressible
B. no viscous
C. flows in a steady manner
D. all of them
8 At low speeds, the drag force is
A. proportional to speed
B. inversely proportional to speed
C. not simply proportional to speed
D. none of them
9 The equation of continuity
A1V1= A2V2is for the flow of
A. an ideal fluid
B. an incompressible fluid
C. a non visconcous fluid
D. all of the above
10 What are the SI base units of the coefficient of viscosity
A. Kg m s-2
B. kgm2 s-2
C. Kg m s-1
D. kg m-1s-1

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