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

The fluid is incompressible, if itsdensity is

Question # 2

The law of conservation of mass gives us the

Question # 3

Which of the following is a characteristic of an ideal fluid?

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

Density of fluid is defined as:

Question # 8

Bernoulli's equation is based upon law of conservation

Question # 9

Fog droplets are suspended in air when their weight is balanced by:

Question # 10

Surface tension of water is due to

Question # 11

The density of blood is nearly equal to that of

Question # 12

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

Question # 13

Pressure exerted by a gas on the walls of its container in due to

Question # 14

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

Question # 15

Blood is an

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Blood has a density
A. Equal to water
B. Greater then water
C. Lesser then water
D. None of these
2 A water hose with an internal diameter of 20 mm at the outlet discharges 30 kg of water in 60 s. What is water speed at the outlet if density of water is 1000 kg/m3during its steady flow
A. 1.3 m/s
B. 1.6 m/s
C. 1.9 m/s
D. 2.2 m/s
3 Stoke;s law is not applicable when the speed of the object moving through a fluid is:
A. Zero
B. Small
C. Large
D. None of these
4 According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area
A. decreases
B. increases
C. becomes zero
D. none of them
5 In case of streamed lined flow of liquid, the loss of energy is
A. Maximum
B. Minimum
C. Infinite
D. equal to what is in turbulent flow
6 The direction of the streamlines is the same as the direction of the
A. force
B. torque
C. velocity
D. weight
7 Rate of flow can be expressed in
A. litre/sec
B. litre-sec
C. sec/litre
D. sec/litre-m
8 The irregular and unsteady flow of the fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
9 A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that
A. water contains hydrogen atoms, air does not
B. water molecules are smaller than molecules in the air
C. water molecules are smaller than molecules in the air
D. surface tension of the water prevents it from
10 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:
A. 10-16N
B. 10-14N
C. 10-12N
D. 10-10N

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