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

With increase of temperature, the viscosity of liquid and gases

Question # 2

Bernoulli's equation is based upon law of conversation

Question # 3

The velocity of falling raindrop attains limited value because of

Question # 4

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 # 5

Which of the following has the greatest coefficient of viscosity?

Question # 6

Fog droplets are suspended in air when their weight is balanced by:

Question # 7

In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.

Question # 8

The fluid is incompressible, if itsdensity is

Question # 9

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

Question # 10

The direction of the streamlines is the same as the direction of the

Question # 11

The velocity gained by the fluid in falling through the distance (h1 - h2) under the action of gravity is equal to the speed of the action of gravity is equal to the speed of the

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

According to the Bernoulli's theorem the pressure velocity are

Question # 14

Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid

Question # 15

Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 What is another name for laminar flow?
A. streamline
B. unsteady flow
C. turbulent flow
D. both (a) and (b)
3 The irregular and unsteady flow of the fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
4 Which of the following options states the names of fluids in the order of increasing viscosity?
A. mercury, motor oil, methanol
B. methanol, mercury, motor oil
C. motor oil, mercury, methanol
D. methanol, motor oil, mercury
5 The fluid is incompressible, if itsdensity is
A. zero
B. constant
C. very high
D. very small
6 Fire fighters have jet attached to the head of their water pipes in order to
A. Increase the mass of water flowing per second
B. Increase the velocity of water flowing out
C. Increase the volume of water flowing per second
D. Avoid wastage of water
7 A massive object falls through a fluid:
A. Faster
B. Slower
C. Slowest
D. None
8 The term Brownian movement refers to
A. irregular motions of small particles suspended in a fluid
B. convection currents in a liquid or gas
C. convection currents in a gas but not in a liquid
D. the stretching of a body beyond its elastic limit
9 Ball pen functions on the principle of
A. Viscosity
B. Boyle's law
C. Gravitational force
D. Surface tnesion
10 The smooth or steady stream-line flow is know as
A. Laminar flow
B. Turbulent flow
C. Both a and b
D. None of the above

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