ECAT Pre Computer Science Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

Try The MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

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ECAT Physics Chapter 6 Fluid Dynamics

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Question # 1

A device used to measure the speed of liquid flow is known as

Question # 2

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

Question # 3

The irregular and unsteady flow of the fluid is called

Question # 4

Surface tension of water is reduced by adding

Question # 5

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

Question # 6

At high speed, fluid friction _____ and fuel consumption ___,:

Question # 7

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

Question # 8

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

Question # 9

The drag force acting on a spherical droplet of radius 10-5m moving with a velocity of 1 cm/sec in a fluid of velocity 5.31 x 10-7m/sec. The units comes out to be:

Question # 10

The direction of the streamlines is the same as the direction of the

Question # 11

When weight of an object falling freely becomes equal to the drag force, then the body will move with

Question # 12

Blood pressure is measured in torr. Which of the following units could belong to torr?

Question # 13

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

Question # 14

A massive object falls through a fluid:

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The dimensions of viscosity are:
A. M2L-1T-2
B. M-1L1T-1
C. M-1L-1T
D. ML-1T-1
2 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar
3 In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.
A. Streamline, cannot
B. Turbulent, cannot
C. Streamline, can
D. None of these
4 Bernoulli's equation is applicable for
A. turbulent flow
B. streamline flow
C. both (a) and (b)
D. all kinds of flows
5 The value for systolic blood pressure for a normal healthy person is
A. 140 torr
B. 80 torr
C. 90 torr
D. 120 torr
6 When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called
A. incompressible
B. compressible
C. viscous
D. non viscous
7 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
8 The internal pressure of the blood is
A. less than the external atmospheric pressure
B. greater than the external atmospheric pressure
C. equal to the external atmosphericpressure
D. none of them
9 Rate of flow can be expressed in
A. litre/sec
B. litre-sec
C. sec/litre
D. sec/litre-m
10 Blood vessels can be stretch like rubber, therefore they are
A. rigid
B. hard
C. very thick
D. not rigid

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