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

A fluid at a certain point has 50 J of potential energy per unit volume, 75 J of kinetic energy per unit volume,and 35 J of pressure energy per unit volume. the total energy of the fluid is

Question # 2

The fluid is incompressible, if itsdensity is

Question # 3

Fluid A is more viscous than fluid B. While flowing through a pipe of the same dimensions and material which fluid takes longer to travel at 25°C?

Question # 4

According to slok's law, drag force depends on

Question # 5

Bernoulli's equation is important in the field of

Question # 6

When weight of an object falling freely becomes equal to the drag force, then the body will move with

Question # 7

In case of streamed lined flow of liquid, the loss of energy is

Question # 8

The irregular and unsteady flow of the fluid is called

Question # 9

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

Question # 10

According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be

Question # 11

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

Question # 12

Drag force increases if speed of the object moving through the fluid:

Question # 13

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

Question # 14

When a fluid is in motion, its flow can be considered as

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm2will be
A. 1 cm
B. 2 cm
C. 8 cm
D. None
2 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
3 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
4 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
5 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
6 The pressure will be low where the speed of the fluid is
A. Zero
B. High
C. Low
D. Constant
7 In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.
A. Streamline, cannot
B. Turbulent, cannot
C. Streamline, can
D. None of these
8 When a water droplet falls through air, the net force on it is
A. Net force = drag force - weight
B. Net force = weight - drag force
C. Net force = drag force + weight
D. Net force = weight + drag force
9 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
10 Blood is an
A. Compressible fluid
B. incompressible fluid
C. hard
D. none of them

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