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

The unit of viscosity is SI system is:

Question # 2

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

Question # 3

Fluid A is more viscous than fluid B. While flowing through a pipe of the same dimensions and material which fluid takes longer to travel at 25°C?

Question # 4

A tube is tapered from 20 cm diameter to 2 cm diameter, the velocity at the first cross-section is 50 cm/s, then the velocity at the second cross-section is

Question # 5

Which of the following has the greatest coefficient of viscosity?

Question # 6

Stoke;s law is not applicable when the speed of the object moving through a fluid is:

Question # 7

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

Question # 8

In deriving the Bernoulli's equation, we assume that the fluid is

Question # 9

The analysis of fluid motion becomes simplified by using

Question # 10

Surface tension of water is reduced by adding

Question # 11

Which of the following options states the names of fluids in the order of increasing viscosity?

Question # 12

Where the streamlines are very far apart from each other, the pressure will be

Question # 13

A massive object falls through a fluid:

Question # 14

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

Question # 15

Density of fluid is defined as:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 Machine parts are jammed due to:
A. Increasing in viscosity of lubricant
B. Decreasing in viscosity of lubricant
C. Decreasing in surface tension of lubricant
D. None of these
3 A device used to measure the speed of liquid flow is known as
A. barometer
B. speedometer
C. sphygmomanometer
D. venture-meter
4 What are the SI base units of the coefficient of viscosity
A. Kg m s-2
B. kgm2 s-2
C. Kg m s-1
D. kg m-1s-1
5 Blood is an
A. Compressible fluid
B. incompressible fluid
C. hard
D. none of them
6 The law of conservation of energy gives us
A. equation of continuity
B. Bernoulli's theorem
C. both of them
D. none of them
7 In Bernoulli's theorem the relation between velocity and pressure is
A. Inverse
B. Direct
C. None of the above
D. Both a and b
8 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
9 Fluid A is more viscous than fluid B. While flowing through a pipe of the same dimensions and material which fluid takes longer to travel at 25°C?
A. fluid B
B. fluid A
C. both take the same time
D. not possible to determine from given information
10 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

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