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

When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:

Question # 2

Blood has a density

Question # 3

The velocity of falling raindrop attains limited value because of

Question # 4

The resistance offered by a fluid to a solid moving inside it is called:

Question # 5

During the steady flow, different streamlines

Question # 6

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

Question # 7

The effect of friction between different layers of a flowing fluid is described in terms of

Question # 8

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

Question # 9

Deep water almost runs still when surface water flow in rivers. What does it explains

Question # 10

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

Question # 11

A fluid at a certain point has 50 J of potential energy per unit volume, 75 J of kinetic energy per unit volume,and 35 J of pressure energy per unit volume. the total energy of the fluid is

Question # 12

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

Question # 13

If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe

Question # 14

Above a certain velocity of a fluid is called

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Viscosity of water is ______ that of air but ___ that of plasma.
A. More, more
B. Less, more
C. Less, less
D. More, less
2 The maximum drag force on a falling sphere is 9.8 N, it weight is
A. 1 N
B. 9.8 N
C. 4.9 N
D. Cannot be calculated
3 The fluid which is incompressible and non viscous is called
A. Ideal fluid
B. Non-ideal fluid
C. Prefect fluid
D. All
4 Surface tension of water is due to
A. Inter molecular attractions
B. Inter molecular spaces
C. Inter molecular repulsion
D. None of above
5 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None
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
A. 1.3 m/s
B. 1.6 m/s
C. 1.9 m/s
D. 2.2 m/s
7 Blood has a density
A. Equal to water
B. Greater then water
C. Lesser then water
D. None of these
8 At high speed, fluid friction _____ and fuel consumption ___,:
A. Increases, decreases
B. Increases, increases
C. Decreases, increases
D. None of these
9 The density of water is 103kg/m3. The water pressure on a submarine is 2.0 x 107N/m2. The depth of the submarine below the surface of the water, in maters, is approximately
A. 200 m
B. 11000 m
C. 2000 m
D. 8000 m
10 The dimensions of viscosity are:
A. M2L-1T-2
B. M-1L1T-1
C. M-1L-1T
D. ML-1T-1

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