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

Viscosity is defined as

Question # 2

Pressure exerted by a gas on the walls of its container in due to

Question # 3

Rate of flow can be expressed in

Question # 4

Bernoulli's equation is applicable for

Question # 5

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 # 6

Stoke;s law is not applicable when the speed of the object moving through a fluid is:

Question # 7

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

Question # 8

According to Stoke's law, drag force depends on

Question # 9

A massive object falls through a fluid:

Question # 10

The rain drop falling from the sky reach the ground with

Question # 11

Matter is made up of very tiny particles called

Question # 12

The equation of continuity
A1V1= A2V2is for the flow of

Question # 13

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

Question # 14

The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 When the speed of a body in a fluid increases then the drag force
A. decreases
B. becomes zero
C. increases
D. non of them
3 Density of fluid is defined as:
A. Its volume to mass ratio
B. Product of volume and mass
C. Its mass of volume ratio
D. None of these
4 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
5 Internal friction of fluid is called
A. Surface tension
B. Viscosity
C. Resistance
D. Cohesive force
6 Rate of flow can be expressed in
A. litre/sec
B. litre-sec
C. sec/litre
D. sec/litre-m
7 Bernoulli's equation is based upon law of conversation
A. Mass
B. Momentum
C. Energy
D. None of these
8 The unit of viscosity is SI system is:
A. Kg-1m sec-1
B. Kgm-1 sec-1
C. Kg-1m-1 sec
D. None of these
9 The smooth or steady streamline flow is known as
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
10 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

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