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

At the starting point of the free fall motion of an object, its acceleration will be

Question # 2

The value of viscosity of a fluid is dependent on (at constant temperature)

Question # 3

Two water pipes of diameters 4 cm and 8 cm are connected with a supply line. The velocity of flow of water in the pipe 4 cm diameter is

Question # 4

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

Question # 5

Fluids resist force, This property is called

Question # 6

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

Question # 7

The application of Bernoulli's equation is

Question # 8

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

Question # 9

The direction of the streamlines is the same as the direction of the

Question # 10

Bernoulli's equation is important in the field of

Question # 11

The equation of continuity is

Question # 12

In deriving the Bernoulli's equation, we assume that the fluid is

Question # 13

The law of conservation of mass gives us the

Question # 14

According to slok's law, drag force depends on

Question # 15

In a normal healthy person the value of systolic pressure is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
A. 2.5 ms-1
B. 3.2 ms-1
C. 4.3 ms-1
D. 1.1 ms-1
2 When a water droplet falling freely through air, the drag force on water droplet increases with th
A. decrease in speed
B. increase in speed
C. pressure
D. none of them
3 According to Stoke's law, drag force depends on
A. Initial velocity
B. Final velocity
C. Terminal velocity
D. Instantaneous velocity
4 The velocity of falling raindrop attains limited value because of
A. Up trust of air
B. Viscous force exerted by air
C. Surface tension effect
D. Air currents atmosphere
5 The electrical forces between the molecules of a liquid are
A. Repulsive
B. Attractive
C. Both A and B
D. None
6 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar
7 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
8 The resistance offered by a fluid to a solid moving inside it is called:
A. Drag force
B. Surface force
C. Viscosity
D. None of these
9 The study of fluid in motion basically involves law of conservation of:
A. Mass
B. Energy
C. Change
D. Both A and C
10 When the velocity of a liquid flowing steadily in a tube increases, its pressure?
A. Decreases
B. Increases
C. Remains same
D. Zero

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