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

Where the streamlines are very close to each other, the pressure will be

Question # 2

The unit of viscosity is SI system is:

Question # 3

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

Question # 4

In a normal healthy person the value of diastolic pressure is

Question # 5

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

Question # 6

According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be

Question # 7

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

Question # 8

The internal pressure of the blood is

Question # 9

The law of conservation of energy gives us

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

Stock's law holds for:

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 When a fluid is in motion, its flow can be considered as
A. turbulent
B. streamline
C. either or them
D. neither of them
2 The terminal velocity of water droplet of radius 1 x 10-4m and desity 1000 kg m-3descending through air of viscosity 19 x 10-6kg. m-1 s-1 is
A. 2.5 ms-1
B. 3.2 ms-1
C. 4.3 ms-1
D. 1.1 ms-1
3 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
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 Matter is made up of very tiny particles called
A. Atoms
B. Molecules
C. Ions
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 Above a certain velocity of a fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
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 The drag force acting on a spherical droplet of radius 10-5m moving with a velocity of 1 cm/sec in a fluid of velocity 5.31 x 10-7m/sec. The units comes out to be:
A. 10-16N
B. 10-14N
C. 10-12N
D. 10-10N
10 Bernoulli's equation is important in the field of
A. Electrical circuit
B. Magnetism
C. Photoelectric effect
D. Flow of fluids

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