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

Unit of viscosity is:

Question # 2

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

Question # 3

According to Stoke's law, drag force depends on

Question # 4

Substances that do not flow easily have

Question # 5

The flow of an ideal fluid is

Question # 6

In a surface tension experiment with a capillary tube water rises up to 0.1 m. if the same experiment is repeated on an artificial satellite, which is resolving around the earth, water will rise in the capillary tube up to a height of

Question # 7

The maximum drag force on a falling sphere is 9.8 N, it weight is

Question # 8

The law of conservation of energy gives us

Question # 9

The irregular and unsteady flow of the fluid is called

Question # 10

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

Question # 11

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

Question # 12

Bernoulli's equation is applicable for

Question # 13

In Bernoulli's theorem the relation between velocity and pressure is

Question # 14

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

Question # 15

The law of conservation of mass gives us the

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 When the velocity of a liquid flowing steadily in a tube increases, its pressure?
A. Decreases
B. Increases
C. Remains same
D. Zero
2 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
3 If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe
A. increases
B. decreases
C. becomes zero
D. is conserved
4 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
5 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None
6 The resistance offered by a fluid to a solid moving inside it is called:
A. Drag force
B. Surface force
C. Viscosity
D. None of these
7 In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.
A. Streamline, cannot
B. Turbulent, cannot
C. Streamline, can
D. None of these
8 A body is floating in a liquid. The up thrust on the body is
A. Equal to weight of liquid displaced
B. Zero
C. Less than the weight of liquid displaced
D. Weight of body-weight of liquid displaced
9 If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm2will be
A. 1 cm
B. 2 cm
C. 8 cm
D. None
10 In deriving the Bernoulli's equation, we assume that the fluid is
A. incompressible
B. no viscous
C. flows in a steady manner
D. all of them

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