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 velocity of falling raindrop attains limited value because of

Question # 2

Above a certain velocity of a fluid is called

Question # 3

A body is floating in a liquid. The up thrust on the body is

Question # 4

The effect of friction between different layers of a flowing fluid is described in terms of

Question # 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

Question # 6

The property of fluids due to which they resist their own flow is called:

Question # 7

Which of the following options states the names of fluids in the order of increasing viscosity?

Question # 8

Stock's law holds for:

Question # 9

When the different streamlines cannot cross each other, then this condition is known as

Question # 10

Substances that do not flow easily have

Question # 11

Bernoulli's equation is applicable for

Question # 12

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 # 13

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

Question # 14

The density of blood is nearly equal to that of

Question # 15

The analysis of fluid motion becomes simplified by using

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The force exerted by the fluid in a hydraulic pump on the piston is 10 cm2, the fluid pressure on the piston is, in N/cm2
A. 20
B. 200
C. 2000
D. 20,000
2 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
3 Two copper balls of 1 cm and 2 cm in diameter are simultaneously dropped in the same viscous medium. The terminal velocity of bigger ball is:
A. Not affected due to its size
B. Twice that of small size ball
C. Four times that of small size ball
D. 1/4th of that of small size ball
4 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
5 The direction of the streamlines is the same as the direction of the
A. force
B. torque
C. velocity
D. weight
6 Bernoulli's equation is applicable for
A. turbulent flow
B. streamline flow
C. both (a) and (b)
D. all kinds of flows
7 Above a certain velocity of a fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
8 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
9 The density of water is 103kg/m3. The water pressure on a submarine is 2.0 x 107N/m2. The depth of the submarine below the surface of the water, in maters, is approximately
A. 200 m
B. 11000 m
C. 2000 m
D. 8000 m
10 Viscosity is defined as
A. the friction between fluid and its container's walls
B. the internal friction between two layers of fluid
C. the resistance to flow a fluid experiences
D. the extent to which outside factors effect the fluid's flow

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