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

Bernoulli's equation is applicable for

Question # 2

Fire fighters have jet attached to the head of their water pipes in order to

Question # 3

Bernoulli's equation is important in the field of

Question # 4

Machine parts are jammed due to:

Question # 5

The equation of continuity
A1V1= A2V2is for the flow of

Question # 6

The internal pressure of the blood is

Question # 7

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

Question # 8

Liquids and gasses have

Question # 9

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

Question # 10

Rate of flow can be expressed in

Question # 11

When a water droplet falls through air, the net force on it is

Question # 12

If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity

Question # 13

The mass of fluid passing through any cross-section per unit time is called

Question # 14

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

Question # 15

Fluids have three types of energies. The Bernoulli's equation combines those energies.which of the following is one of the three enrgies possessed by a fluid?

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ECAT Class Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be
A. low
B. zero
C. high
D. all of them
2 Viscosity is defined as
A. the friction between fluid and its container's walls
B. the internal friction between two layers of fluid
C. the resistance to flow a fluid experiences
D. the extent to which outside factors effect the fluid's flow
3 The electrical forces between the molecules of a liquid are
A. Repulsive
B. Attractive
C. Both A and B
D. None
4 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
5 Deep water almost runs still when surface water flow in rivers. What does it explains
A. Magnus effect
B. Equation of continuity
C. Surface energy
D. Bernoulli's equation
6 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
7 At high speed, fluid friction _____ and fuel consumption ___,:
A. Increases, decreases
B. Increases, increases
C. Decreases, increases
D. None of these
8 Surface tension of water is reduced by adding
A. Detergents
B. Camphor
C. Plastic
D. Both A and B
9 A high concentration of red blood cells increases its viscosity from
A. 3 - 5 times that of mercury
B. 5 - 8 times that of mercury
C. 3 - 5 times that of water
D. 5 - 8 times that of water
10 Fluid friction is _____ the friction between two solid surfaces:
A. Greater than
B. Smaller than
C. Equal to
D. None of these

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