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

The analysis of fluid motion becomes simplified by using

Question # 2

The force exerted by the fluid in a hydraulic pump on the piston is 10 cm2, the fluid pressure on the piston is, in N/cm2

Question # 3

The velocity of falling raindrop attains limited value because of

Question # 4

The rain drop falling from the sky reach the ground with

Question # 5

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

Question # 6

Which of the following options correctly states the equation of continuity for an ideal fluid?

Question # 7

When a water droplet falling freely through air, the drag force on water droplet increases with th

Question # 8

The blood pressure of a person

Question # 9

According to the Bernoulli's theorem the pressure velocity are

Question # 10

Blood is an

Question # 11

The un-steady streamline flow is called

Question # 12

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

Question # 13

Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid

Question # 14

In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.

Question # 15

When the velocity of a liquid flowing steadily in a tube increases, its pressure?

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Blood pressure is measured in torr. Which of the following units could belong to torr?
A. N m-1
B. N m-2
C. N m
D. N-1m-2
2 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
3 Substances that flow easily have
A. large coefficient of viscosity
B. small coefficient of viscosity
C. either of them
D. none of them
4 When the speed of a body in a fluid increases then the drag force
A. decreases
B. becomes zero
C. increases
D. non of them
5 Fluids resist force, This property is called
A. Stiffness
B. Strength
C. Ductility
D. Elasticity
6 At high altitude the blood oozes out of the nose and ear because
A. The blood pressure increase at high altitudes
B. The percentage of oxygen in the air increase
C. The atmospheric pressure decrease there
D. The density of blood decrease at high altitudes
7 A tube tapers from 20 cm diameter to 2 cm, the velocity at first cross-section is 50 ms-1then velocity at second cross-section is
A. 5000 cms-1
B. 500 cms-1
C. 50 cms-1
D. 0.5 cm/s
8 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
9 With increase of temperature, the viscosity of liquid and gases
A. Increases for both
B. Decreases for both
C. Increases for liquids and decreases for gases
D. Decreases for liquids and increases for gases
10 At high speed, fluid friction _____ and fuel consumption ___,:
A. Increases, decreases
B. Increases, increases
C. Decreases, increases
D. None of these

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