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

Fluids resist force, This property is called

Question # 2

The fluid is incompressible, if itsdensity is

Question # 3

If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity

Question # 4

The velocity of falling raindrop attains limited value because of

Question # 5

The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:

Question # 6

Density of fluid is defined as:

Question # 7

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 # 8

The law of conservation of energy gives us

Question # 9

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 # 10

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

Question # 11

In a normal healthy person the value of systolic pressure is

Question # 12

0.10 cm can be written as:

Question # 13

Which of the following options correctly states the equation of continuity for an ideal fluid?

Question # 14

Fog droplets are suspended in air when their weight is balanced by:

Question # 15

The rain drop falling from the sky reach the ground with

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The direction of the streamlines is the same as the direction of the
A. force
B. torque
C. velocity
D. weight
2 Deep water almost runs still when surface water flow in rivers. What does it explains
A. Magnus effect
B. Equation of continuity
C. Surface energy
D. Bernoulli's equation
3 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
4 According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be
A. low
B. zero
C. high
D. all of them
5 According to Stoke's law, drag force depends on
A. Initial velocity
B. Final velocity
C. Terminal velocity
D. Instantaneous velocity
6 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
A. 5000 cms-1
B. 500 cms-1
C. 50 cms-1
D. 0.5 cm/s
7 What is another name for laminar flow?
A. streamline
B. unsteady flow
C. turbulent flow
D. both (a) and (b)
8 Above a certain velocity of a fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
9 Bernoulli's equation is based upon law of conversation
A. Mass
B. Momentum
C. Energy
D. None of these
10 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

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