ECAT Physics Chapter 6 Fluid Dynamics

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

At high speed, fluid friction _____ and fuel consumption ___,:

Question # 2

During the steady flow, different streamlines

Question # 3

Machine parts are jammed due to:

Question # 4

The blood pressure of a person

Question # 5

When a fluid is in motion, its flow can be considered as

Question # 6

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

Question # 7

A flowing liquid possess

Question # 8

A massive object falls through a fluid:

Question # 9

The density of blood is nearly equal to that of

Question # 10

The property of fluids due to which they resist their own flow is called:

Question # 11

The unit of viscosity is SI system is:

Question # 12

Two copper balls of 1 cm and 2 cm in diameter are simultaneously dropped in the same viscous medium. The terminal velocity of bigger ball is:

Question # 13

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

Question # 14

The value for systolic blood pressure for a normal healthy person is

Question # 15

Glycerin has viscosity _____ the viscosity of water:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Blood is an
A. Compressible fluid
B. incompressible fluid
C. hard
D. none of them
2 If every particle of the flow that passes a particular point, moves along the same path as followed by particles which passed the point earlier, then this flow is said to be
A. turbulent
B. streamline
C. abrupt
D. none of them
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 Substances that do not flow easily have
A. large coefficient of viscosity
B. small coefficient of viscosity
C. either of them
D. none of them
5 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
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 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
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 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
A. 1/4 times
B. 4 times
C. Twice
D. 1/2 of 8 cm diameter pipe
10 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

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