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

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

Question # 2

What are the SI base units of the coefficient of viscosity

Question # 3

If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe

Question # 4

Where the streamlines are very close to each other, the pressure will be

Question # 5

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

Question # 6

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 # 7

High speed meteors rushing through air reduces to ashes because of:

Question # 8

Fluid friction is _____ the friction between two solid surfaces:

Question # 9

The body will move with terminal velocity when it acquires

Question # 10

Surface tension of water is due to

Question # 11

Bernoulli's equation is based upon law of conservation

Question # 12

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

Question # 13

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

Question # 14

Unit of viscosity is:

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The pressure will change in the pipe, as the fluid moves through that pipe of varying
A. cross-section
B. height
C. none of them
D. both of them
2 Fluids have three types of energies. The Bernoulli's equation combines those energies.which of the following is one of the three enrgies possessed by a fluid?
A. potential energy
B. pressure energy
C. strain energy
D. (a) and (b) only
3 The pressure will be low where the speed of the fluid is
A. Zero
B. High
C. Low
D. Constant
4 The smooth or steady streamline flow is known as
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
5 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?
A. fluid B
B. fluid A
C. both take the same time
D. not possible to determine from given information
6 In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is
A. Independent of h
B. Proportional to h1/2
C. Proportional to h
D. Proportional to h2
7 A massive object falls through a fluid:
A. Faster
B. Slower
C. Slowest
D. None
8 When the velocity of a liquid flowing steadily in a tube increases, its pressure?
A. Decreases
B. Increases
C. Remains same
D. Zero
9 The study of fluid in motion basically involves law of conservation of:
A. Mass
B. Energy
C. Change
D. Both A and C
10 With increase of temperature, the viscosity of liquid and gases
A. Increases for both
B. Decreases for both
C. Increases for liquids and decreases for gases
D. Decreases for liquids and increases for gases

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