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

Glycerin has viscosity _____ the viscosity of water:

Question # 2

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

Question # 3

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

Question # 4

The fluid is incompressible, if itsdensity is

Question # 5

The law of conservation of mass gives us the

Question # 6

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

Question # 7

The velocity of falling raindrop attains limited value because of

Question # 8

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

Question # 9

Ball pen functions on the principle of

Question # 10

The velocity of falling raindrops attains limited value because of

Question # 11

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

Question # 12

The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is

Question # 13

The body passing a viscous medium affected by:

Question # 14

The SI unit of viscosity is

Question # 15

The mass of fluid passing through any cross-section per unit time is called

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
A. 1/4 times
B. 4 times
C. Twice
D. 1/2 of 8 cm diameter pipe
2 At the starting point of the free fall motion of an object, its acceleration will be
A. maximum
B. minimum
C. zero
D. none of them
3 The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:
A. More, lesser
B. Lesser, more
C. Both A and B
D. Lesser, lesser
4 When a fluid is in motion, its flow can be considered as
A. turbulent
B. streamline
C. either or them
D. neither of them
5 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
6 If every particle of the flow that passes a particular point, moves along the same path as followed by particles which passed the point earlier, then this flow is said to be
A. turbulent
B. streamline
C. abrupt
D. none of them
7 Fluid friction is _____ the friction between two solid surfaces:
A. Greater than
B. Smaller than
C. Equal to
D. None of these
8 Fluids resist force, This property is called
A. Stiffness
B. Strength
C. Ductility
D. Elasticity
9 The law of conservation of mass gives us the
A. equation of continuity
B. Bernoulli's theorem
C. both of them
D. none of them
10 When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:
A. Starts increasing
B. Starts decreasing
C. Becomes constant
D. Is called escape velocity

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