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 law of conservation of energy gives us

Question # 2

According to Stoke's law, drag force depends on

Question # 3

Drag force increases if speed of the object moving through the fluid:

Question # 4

Under normal circumstances, the volume of blood is sufficient to keep the vessels

Question # 5

The value of viscosity of a fluid is dependent on (at constant temperature)

Question # 6

A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that

Question # 7

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

Question # 8

Stock's law holds for:

Question # 9

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

Question # 10

The irregular and unsteady flow of the fluid is called

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

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

Question # 13

When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called

Question # 14

The fluid which is incompressible and non viscous is called

Question # 15

The velocity of falling raindrop attains limited value because of

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 With increase of temperature, the viscosity of liquid and gases
A. Increases for both
B. Decreases for both
C. Increases for liquids and decreases for gases
D. Decreases for liquids and increases for gases
3 Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid
A. speed
B. height
C. none of them
D. both of them
4 The fluid is incompressible, if itsdensity is
A. zero
B. constant
C. very high
D. very small
5 The dimensions of viscosity are:
A. M2L-1T-2
B. M-1L1T-1
C. M-1L-1T
D. ML-1T-1
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
A. 0.1 m
B. 0.2 m
C. 0.98 m
D. Full length of the capillary tube
7 How much force is required to slide one layer of the liquid over the other layer is measured by
A. friction
B. density
C. viscosity
D. resistivity
8 The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is
A. stethoscope
B. thermometer
C. manometer
D. barometer
9 At high speed, fluid friction _____ and fuel consumption ___,:
A. Increases, decreases
B. Increases, increases
C. Decreases, increases
D. None of these
10 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey

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