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 mass of fluid passing through any cross-section per unit time is called

Question # 2

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

Question # 3

The direction of the streamlines is the same as the direction of the

Question # 4

What are the SI base units of the coefficient of viscosity

Question # 5

Density of fluid is defined as:

Question # 6

A high concentration of red blood cells increases its viscosity from

Question # 7

Fire fighters have a jet attached to the head of their water pipes in order to head of their water pipes in order to

Question # 8

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

Question # 9

If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term

Question # 10

Surface tension of water is reduced by adding

Question # 11

An object moving through a fluid experiences a retarding force called a

Question # 12

At high speed, fluid friction _____ and fuel consumption ___,:

Question # 13

Bernoulli's equation is applicable for

Question # 14

When each particle of the fluid moves along a smoth path, this path is known as

Question # 15

The unit of viscosity is SI system is:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The fluid which is incompressible and non viscous is called
A. Ideal fluid
B. Non-ideal fluid
C. Prefect fluid
D. All
2 The law of conservation of mass gives us the
A. equation of continuity
B. Bernoulli's theorem
C. both of them
D. none of them
3 According to Stoke's law, drag force depends on
A. Initial velocity
B. Final velocity
C. Terminal velocity
D. Instantaneous velocity
4 A device used to measure the speed of liquid flow is known as
A. barometer
B. speedometer
C. sphygmomanometer
D. venture-meter
5 If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term
A. P
B. 1/2 fv2
C. pgh
D. none of them
6 N s m-2is unit of:
A. Drag force
B. Pressure
C. Surface tension
D. Coefficient of viscosity
7 Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:
A. Is smaller than
B. Is greater than
C. Becomes equal to
D. None of these
8 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
9 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
10 When a water droplet falls through air, the net force on it is
A. Net force = drag force - weight
B. Net force = weight - drag force
C. Net force = drag force + weight
D. Net force = weight + drag force

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