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

The law of conservation of energy gives us

Question # 2

The electrical forces between the molecules of a liquid are

Question # 3

The blood pressure of a person

Question # 4

A massive object falls through a fluid:

Question # 5

The pressure will change in the pipe, as the fluid moves through that pipe of varying

Question # 6

The smooth or steady stream-line flow is know as

Question # 7

The irregular and unsteady flow of the fluid is called

Question # 8

At low speeds, the drag force is

Question # 9

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

Question # 10

According to Stoke's law, drag force depends on

Question # 11

N s m-2is unit of:

Question # 12

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 # 13

Bernoulli's equation is based upon law of conversation of

Question # 14

In Bernoulli's theorem the relation between velocity and pressure is

Question # 15

The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 With the increase of temperature viscosity
A. Increase
B. Decrease
C. Remains same
D. Doubles
2 The rain drop falling from the sky reach the ground with
A. Constant terminal velocity
B. Constant gravitational acceleration
C. Variable acceleration
D. acceleration greater than g
3 The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called
A. constant rate
B. volume rate
C. flow rate
D. steady rate
4 Where the streamlines are very far apart from each other, the pressure will be
A. low
B. zero
C. high
D. all of them
5 Blood vessels can be stretch like rubber, therefore they are
A. rigid
B. hard
C. very thick
D. not rigid
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 The velocity of falling raindrops attains limited value because of
A. Up thrust of air
B. Air currents of the earth atmosphere
C. Surface tension effect
D. Viscous force exerted by air
8 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
9 When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called
A. incompressible
B. compressible
C. viscous
D. non viscous
10 Viscosity of water is ______ that of air but ___ that of plasma.
A. More, more
B. Less, more
C. Less, less
D. More, less

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