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

Substances that do not flow easily have

Question # 2

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

Question # 3

A device used to measure the speed of liquid flow is known as

Question # 4

When a water droplet falls through air, the net force on it is

Question # 5

The flow of an ideal fluid is

Question # 6

The force exerted by the fluid in a hydraulic pump on the piston is 10 cm2, the fluid pressure on the piston is, in N/cm2

Question # 7

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

Question # 8

The blood pressure of a person

Question # 9

Bernoulli's equation is based upon law of conversation of

Question # 10

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

Question # 11

Pressure exerted by a gas on the walls of its container in due to

Question # 12

Blood pressure is measured by the instrument

Question # 13

The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is

Question # 14

Glycerin has viscosity _____ the viscosity of water:

Question # 15

In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The pressure will be low where the speed of the fluid is
A. Zero
B. High
C. Low
D. Constant
2 Ball pen functions on the principle of
A. Viscosity
B. Boyle's law
C. Gravitational force
D. Surface tnesion
3 An object moving through a fluid experiences a retarding force called a
A. frictional force
B. terminal force
C. opposing force
D. drag force
4 When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called
A. incompressible
B. compressible
C. viscous
D. non viscous
5 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
6 A high concentration of red blood cells increases its viscosity from
A. 3 - 5 times that of mercury
B. 5 - 8 times that of mercury
C. 3 - 5 times that of water
D. 5 - 8 times that of water
7 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
8 The effect of friction between different layers of a flowing fluid is described in terms of
A. motion of fluid
B. nature of fluid
C. colour of fluid
D. viscosity of fluid
9 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
A. 50 m/s
B. 20 m/s
C. 40 cm/s
D. 5 cm/s
10 Glycerin has viscosity _____ the viscosity of water:
A. More than
B. Equal to
C. Less than
D. None of these

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