ECAT Pre Computer Science Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

Try The 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

The resistance offered by a fluid to a solid moving inside it is called:

Question # 2

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

Question # 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

Question # 4

Viscosity is defined as

Question # 5

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 # 6

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

Question # 7

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

Question # 8

The flow of an ideal fluid is

Question # 9

The equation of continuity
A1V1= A2V2is for the flow of

Question # 10

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 # 11

Blood pressure is measured by the instrument

Question # 12

A tube tapers from 20 cm diameter to 2 cm, the velocity at first cross-section is 50 ms-1then velocity at second cross-section is

Question # 13

The velocity of falling raindrop attains limited value because of

Question # 14

Bernoulli's equation is based upon law of conservation

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 At high speed, fluid friction _____ and fuel consumption ___,:
A. Increases, decreases
B. Increases, increases
C. Decreases, increases
D. None of these
2 What is another name for laminar flow?
A. streamline
B. unsteady flow
C. turbulent flow
D. both (a) and (b)
3 A flowing liquid possess
A. K.E
B. P.E
C. Pressure Energy
D. All
4 According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area
A. decreases
B. increases
C. becomes zero
D. none of them
5 According to the Bernoulli's theorem the pressure velocity are
A. equal to each other
B. proportional to each other
C. inversely proportional to each other
D. none of them
6 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
7 The value for systolic blood pressure for a normal healthy person is
A. 140 torr
B. 80 torr
C. 90 torr
D. 120 torr
8 Stock's law holds for:
A. Motion through free space
B. Motion through viscous medium
C. Bodies of all shapes
D. None of these
9 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
10 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

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