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

N s m-2is unit of:

Question # 2

A high concentration of red blood cells increases its viscosity from

Question # 3

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 # 4

Bernoulli's equation is applicable for

Question # 5

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

Question # 6

Liquids and gasses have

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

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

Question # 9

When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called

Question # 10

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

Question # 11

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

Question # 12

Where the streamlines are very far apart from each other, the pressure will be

Question # 13

Viscosity of water is ______ that of air but ___ that of plasma.

Question # 14

Drag force increases if speed of the object moving through the fluid:

Question # 15

Two water pipes of diameters 4 cm and 8 cm are connected with a supply line. The velocity of flow of water in the pipe 4 cm diameter is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Substances that flow easily have
A. large coefficient of viscosity
B. small coefficient of viscosity
C. either of them
D. none of them
2 Substances that do not flow easily have
A. large coefficient of viscosity
B. small coefficient of viscosity
C. either of them
D. none of them
3 Which of the following options correctly states the equation of continuity for an ideal fluid?
A. A1A2= V1V2
B. A1/A2= V2/V1
C. A1/A2= V1/V2
D. none of the above
4 Density of fluid is defined as:
A. Its volume to mass ratio
B. Product of volume and mass
C. Its mass of volume ratio
D. None of these
5 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
A. Quadratic equation
B. Equation of discontinuity
C. Equation of continuity
D. None of the above
6 Glycerin has viscosity _____ the viscosity of water:
A. More than
B. Equal to
C. Less than
D. None of these
7 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
8 Fire fighters have a jet attached to the head of their water pipes in order to head of their water pipes in order to
A. Increase the mass of water flowing per second
B. Avoid wastage of water
C. Increase the velocity of water flowing out
D. Increase the volume of water flowing per second
9 The smooth or steady stream-line flow is know as
A. Laminar flow
B. Turbulent flow
C. Both a and b
D. None of the above
10 The smooth or steady streamline flow is known as
A. laminar flow
B. turbulent flow
C. both of them
D. none of them

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