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

N s m-2is unit of:

Question # 2

High speed meteors rushing through air reduces to ashes because of:

Question # 3

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

Question # 4

The rain drop falling from the sky reach the ground with

Question # 5

When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called

Question # 6

A water hose with an internal diameter of 20 mm at the outlet discharges 30 kg of water in 60 s. What is water speed at the outlet if density of water is 1000 kg/m3during its steady flow

Question # 7

The internal pressure of the blood is

Question # 8

Liquids and gasses have

Question # 9

A tube is tapered from 20 cm diameter to 2 cm diameter, the velocity at the first cross-section is 50 cm/s, then the velocity at the second cross-section is

Question # 10

The analysis of fluid motion becomes simplified by using

Question # 11

A body is moving through a viscous medium eventually comes to rest because of:

Question # 12

A high concentration of red blood cells increases its viscosity from

Question # 13

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

Question # 14

When the different streamlines cannot cross each other, then this condition is known as

Question # 15

With increase of temperature, the viscosity of liquid and gases

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The drag force acting on a spherical droplet of radius 10-5m moving with a velocity of 1 cm/sec in a fluid of velocity 5.31 x 10-7m/sec. The units comes out to be:
A. 10-16N
B. 10-14N
C. 10-12N
D. 10-10N
2 According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area
A. decreases
B. increases
C. becomes zero
D. none of them
3 Under normal circumstances, the volume of blood is sufficient to keep the vessels
A. flatted for all times
B. inflated for all times
C. inflated for small times
D. none of them
4 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
5 The pressure will change in the pipe, as the fluid moves through that pipe of varying
A. cross-section
B. height
C. none of them
D. both of them
6 Blood is an
A. Compressible fluid
B. incompressible fluid
C. hard
D. none of them
7 N s m-2is unit of:
A. Drag force
B. Pressure
C. Surface tension
D. Coefficient of viscosity
8 The law of conservation of mass gives us the
A. equation of continuity
B. Bernoulli's theorem
C. both of them
D. none of them
9 What are the SI base units of the coefficient of viscosity
A. Kg m s-2
B. kgm2 s-2
C. Kg m s-1
D. kg m-1s-1
10 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:
A. Not affected due to its size
B. Twice that of small size ball
C. Four times that of small size ball
D. 1/4th of that of small size ball

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