ECAT Pre Computer Science Chapter 6 MCQ Test With Answer

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

At high altitude the blood oozes out of the nose and ear because

Question # 2

Bernoulli's equation is based upon law of conservation

Question # 3

Substances that flow easily have

Question # 4

Two copper balls of 1 cm and 2 cm in diameter are simultaneously dropped in the same viscous medium. The terminal velocity of bigger ball is:

Question # 5

The law of conservation of mass gives us the

Question # 6

Ball pen functions on the principle of

Question # 7

The application of Bernoulli's equation is

Question # 8

The SI unit of viscosity is

Question # 9

According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area

Question # 10

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

Question # 11

Which of the following has the greatest coefficient of viscosity?

Question # 12

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

Question # 13

In a normal healthy person the value of systolic pressure is

Question # 14

In a normal healthy person the value of diastolic pressure is

Question # 15

The velocity of falling raindrop attains limited value because of

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Sr.# Question Answer
1 The blood pressure of a person
A. decrease with age
B. increase with age
C. has no effect with age
D. none of them
2 Viscosity of water is ______ that of air but ___ that of plasma.
A. More, more
B. Less, more
C. Less, less
D. More, less
3 The effect of friction between different layers of a flowing fluid is described in terms of
A. motion of fluid
B. nature of fluid
C. colour of fluid
D. viscosity of fluid
4 The smooth or steady stream-line flow is know as
A. Laminar flow
B. Turbulent flow
C. Both a and b
D. None of the above
5 The body will move with terminal velocity when it acquires
A. minimum speed
B. zero speed
C. maximum speed
D. none of them
6 When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:
A. FD-mg
B. Zero
C. mg-FD
D. None of these
7 According to the Bernoulli's theorem the pressure velocity are
A. equal to each other
B. proportional to each other
C. inversely proportional to each other
D. none of them
8 During the steady flow, different streamlines
A. cannot across each other
B. can across each other
C. either of them
D. neither of them
9 The term Brownian movement refers to
A. irregular motions of small particles suspended in a fluid
B. convection currents in a liquid or gas
C. convection currents in a gas but not in a liquid
D. the stretching of a body beyond its elastic limit
10 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

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