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

At high altitude the blood oozes out of the nose and ear because

Question # 2

Which of the following has the greatest coefficient of viscosity?

Question # 3

A person standing near the track of a fast moving train has tendency to fall towards it because of

Question # 4

An object moving through a fluid experiences a retarding force called a

Question # 5

Blood pressure is measured in torr. Which of the following units could belong to torr?

Question # 6

Viscosity of water is ______ that of air but ___ that of plasma.

Question # 7

The pressure will be low where the speed of the fluid is

Question # 8

The flow of an ideal fluid is

Question # 9

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 # 10

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

Question # 11

The rain drop falling from the sky reach the ground with

Question # 12

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

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

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 # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The fluid which is incompressible and non viscous is called
A. Ideal fluid
B. Non-ideal fluid
C. Prefect fluid
D. All
2 At low speeds, the drag force is
A. proportional to speed
B. inversely proportional to speed
C. not simply proportional to speed
D. none of them
3 Rate of flow can be expressed in
A. litre/sec
B. litre-sec
C. sec/litre
D. sec/litre-m
4 During the steady flow, different streamlines
A. cannot across each other
B. can across each other
C. either of them
D. neither of them
5 At high speed, fluid friction _____ and fuel consumption ___,:
A. Increases, decreases
B. Increases, increases
C. Decreases, increases
D. None of these
6 When the velocity of a liquid flowing steadily in a tube increases, its pressure?
A. Decreases
B. Increases
C. Remains same
D. Zero
7 Matter is made up of very tiny particles called
A. Atoms
B. Molecules
C. Ions
D. None of these
8 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
9 Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:
A. Is smaller than
B. Is greater than
C. Becomes equal to
D. None of these
10 Pressure exerted by a gas on the walls of its container in due to
A. adhesion between the gas molecules and the container
B. cohesion between the gas molecules and the container
C. collision between the gas molecules and the container
D. surface tension of the gas

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