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

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

Question # 2

A tube is tapered from 20 cm diameter to 2 cm diameter, the velocity at the first cross-section is 50 cm/s, then the velocity at the second cross-section is

Question # 3

Substances that do not flow easily have

Question # 4

Fluid A is more viscous than fluid B. While flowing through a pipe of the same dimensions and material which fluid takes longer to travel at 25°C?

Question # 5

Above a certain velocity of a fluid is called

Question # 6

The pressure will change in the pipe, as the fluid moves through that pipe of varying

Question # 7

With increase of temperature, the viscosity of liquid and gases

Question # 8

In Bernoulli's theorem the relation between velocity and pressure is

Question # 9

Stock's law holds for:

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

The equation of continuity is

Question # 14

Rate of flow can be expressed in

Question # 15

The smooth or steady streamline flow is known as

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 A high concentration of red blood cells increases its viscosity from
A. 3 - 5 times that of mercury
B. 5 - 8 times that of mercury
C. 3 - 5 times that of water
D. 5 - 8 times that of water
2 Bernoulli's equation is based upon law of conversation
A. Mass
B. Momentum
C. Energy
D. None of these
3 The SI unit of viscosity is
A. kg m-1s-1
B. kg ms-1
C. kg m-1s-2
D. kg m-1s
4 Bernoulli's equation is applicable for
A. turbulent flow
B. streamline flow
C. both (a) and (b)
D. all kinds of flows
5 When a water droplet falling freely through air, the drag force on water droplet increases with th
A. decrease in speed
B. increase in speed
C. pressure
D. none of them
6 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey
7 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
8 The terminal velocity of water droplet of radius 1 x 10-4m and desity 1000 kg m-3descending through air of viscosity 19 x 10-6kg. m-1 s-1 is
A. 2.5 ms-1
B. 3.2 ms-1
C. 4.3 ms-1
D. 1.1 ms-1
9 The property of fluids due to which they resist their own flow is called:
A. Drag force
B. Surface tension
C. Viscosity
D. None of these
10 Matter is made up of very tiny particles called
A. Atoms
B. Molecules
C. Ions
D. None of these

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