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

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

Question # 2

Under normal circumstances, the volume of blood is sufficient to keep the vessels

Question # 3

Blood vessels can be stretch like rubber, therefore they are

Question # 4

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

Question # 5

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

Question # 6

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

Question # 7

The dimensions of viscosity are:

Question # 8

The unit of viscosity is SI system is:

Question # 9

When the speed of a body in a fluid increases then the drag force

Question # 10

Blood has a density

Question # 11

A body is moving through a viscous medium eventually comes to rest because of:

Question # 12

Fluids resist force, This property is called

Question # 13

The study of fluid in motion basically involves law of conservation of:

Question # 14

Substances that flow easily have

Question # 15

When a water droplet falls through air, the net force on it is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The un-steady streamline flow is called
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
2 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
3 Bernoulli's equation is applicable for
A. turbulent flow
B. streamline flow
C. both (a) and (b)
D. all kinds of flows
4 Blood vessels can be stretch like rubber, therefore they are
A. rigid
B. hard
C. very thick
D. not rigid
5 When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:
A. FD-mg
B. Zero
C. mg-FD
D. None of these
6 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
7 Substances that flow easily have
A. large coefficient of viscosity
B. small coefficient of viscosity
C. either of them
D. none of them
8 The SI unit of viscosity is
A. kg m-1s-1
B. kg ms-1
C. kg m-1s-2
D. kg m-1s
9 Fluid friction is _____ the friction between two solid surfaces:
A. Greater than
B. Smaller than
C. Equal to
D. None of these
10 A tube tapers from 20 cm diameter to 2 cm, the velocity at first cross-section is 50 ms-1then velocity at second cross-section is
A. 5000 cms-1
B. 500 cms-1
C. 50 cms-1
D. 0.5 cm/s

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