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

Bernoulli's equation is based upon law of conversation

Question # 2

The analysis of fluid motion becomes simplified by using

Question # 3

The dimensions of viscosity are:

Question # 4

The pressure will be low where the speed of the fluid is

Question # 5

The equation of continuity
A1V1= A2V2is for the flow of

Question # 6

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

Question # 7

At the starting point of the free fall motion of an object, its acceleration will be

Question # 8

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

Question # 9

In case of streamed lined flow of liquid, the loss of energy is

Question # 10

The velocity of falling raindrops attains limited value because of

Question # 11

Which of the following has the greatest coefficient of viscosity?

Question # 12

Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid

Question # 13

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

Question # 14

The velocity of falling raindrop attains limited value because of

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is
A. very high
B. very low
C. constant
D. zero
2 If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm2will be
A. 1 cm
B. 2 cm
C. 8 cm
D. None
3 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
A. 50 m/s
B. 20 m/s
C. 40 cm/s
D. 5 cm/s
4 The study of fluid in motion basically involves law of conservation of:
A. Mass
B. Energy
C. Change
D. Both A and C
5 Glycerin has viscosity _____ the viscosity of water:
A. More than
B. Equal to
C. Less than
D. None of these
6 What is another name for laminar flow?
A. streamline
B. unsteady flow
C. turbulent flow
D. both (a) and (b)
7 The velocity of falling raindrops attains limited value because of
A. Up thrust of air
B. Air currents of the earth atmosphere
C. Surface tension effect
D. Viscous force exerted by air
8 The direction of the streamlines is the same as the direction of the
A. force
B. torque
C. velocity
D. weight
9 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey
10 The rain drop falling from the sky reach the ground with
A. Constant terminal velocity
B. Constant gravitational acceleration
C. Variable acceleration
D. acceleration greater than g

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