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 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 # 2

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

Question # 3

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

Question # 4

In the case of an incompressible fluid in stead flow the net rate of flow of mass entering one end of the tube of flow is equal to the net rate of flow of mass leaving the other end. This equation is called

Question # 5

A body is moving through a viscous medium eventually comes to rest because of:

Question # 6

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

Question # 7

Stoke;s law is not applicable when the speed of the object moving through a fluid is:

Question # 8

According to the Bernoulli's theorem the pressure velocity are

Question # 9

N s m-2is unit of:

Question # 10

Deep water almost runs still when surface water flow in rivers. What does it explains

Question # 11

The equation of continuity
A1V1= A2V2is for the flow of

Question # 12

Stock's law holds for:

Question # 13

Ball pen functions on the principle of

Question # 14

Bernoulli's equation is based upon law of conversation

Question # 15

According to slok's law, drag force depends on

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 Blood pressure is measured in torr. Which of the following units could belong to torr?
A. N m-1
B. N m-2
C. N m
D. N-1m-2
3 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey
4 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
A. 125 J
B. 90 J
C. 160 J
D. 85 J
5 The velocity of falling raindrops attains limited value because of
A. Up thrust of air
B. Air currents of the earth atmosphere
C. Surface tension effect
D. Viscous force exerted by air
6 Bernoulli's equation is based upon law of conservation
A. Mass
B. Momentum
C. Energy
D. None of these
7 The dimensions of viscosity are:
A. M2L-1T-2
B. M-1L1T-1
C. M-1L-1T
D. ML-1T-1
8 Bernoulli's equation is based upon law of conversation
A. Mass
B. Momentum
C. Energy
D. None of these
9 The body will move with terminal velocity when it acquires
A. minimum speed
B. zero speed
C. maximum speed
D. none of them
10 The un-steady streamline flow is called
A. laminar flow
B. turbulent flow
C. both of them
D. none of them

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