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

In case of streamed lined flow of liquid, the loss of energy is

Question # 2

When the speed of a body in a fluid increases then the drag force

Question # 3

In a normal healthy person the value of systolic pressure is

Question # 4

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

Question # 5

When a fluid is in motion, its flow can be considered as

Question # 6

The value for systolic blood pressure for a normal healthy person is

Question # 7

When the velocity of a liquid flowing steadily in a tube increases, its pressure?

Question # 8

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

Question # 9

Above a certain velocity of a fluid is called

Question # 10

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

Question # 11

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

Question # 12

Which of the following is a characteristic of an ideal fluid?

Question # 13

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

Question # 14

The density of water is 103kg/m3. The water pressure on a submarine is 2.0 x 107N/m2. The depth of the submarine below the surface of the water, in maters, is approximately

Question # 15

Ball pen functions on the principle of

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 At high altitude the blood oozes out of the nose and ear because
A. The blood pressure increase at high altitudes
B. The percentage of oxygen in the air increase
C. The atmospheric pressure decrease there
D. The density of blood decrease at high altitudes
2 A body is floating in a liquid. The up thrust on the body is
A. Equal to weight of liquid displaced
B. Zero
C. Less than the weight of liquid displaced
D. Weight of body-weight of liquid displaced
3 The value for systolic blood pressure for a normal healthy person is
A. 140 torr
B. 80 torr
C. 90 torr
D. 120 torr
4 Pressure exerted by a gas on the walls of its container in due to
A. adhesion between the gas molecules and the container
B. cohesion between the gas molecules and the container
C. collision between the gas molecules and the container
D. surface tension of the gas
5 The maximum drag force on a falling sphere is 9.8 N, it weight is
A. 1 N
B. 9.8 N
C. 4.9 N
D. Cannot be calculated
6 During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with
A. maximum speed
B. zero speed
C. maximum speed
D. none of them
7 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
8 A massive object falls through a fluid:
A. Faster
B. Slower
C. Slowest
D. None
9 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
10 Internal friction of fluid is called
A. Surface tension
B. Viscosity
C. Resistance
D. Cohesive force

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