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

Question # 2

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

Question # 3

The value for systolic blood pressure for a normal healthy person is

Question # 4

The smooth or steady streamline flow is known as

Question # 5

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

Question # 6

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 # 7

Substances that flow easily have

Question # 8

The velocity gained by the fluid in falling through the distance (h1 - h2) under the action of gravity is equal to the speed of the action of gravity is equal to the speed of the

Question # 9

Bernoulli's equation is applicable for

Question # 10

Two copper balls of 1 cm and 2 cm in diameter are simultaneously dropped in the same viscous medium. The terminal velocity of bigger ball is:

Question # 11

In a normal healthy person the value of diastolic pressure is

Question # 12

According to slok's law, drag force depends on

Question # 13

Glycerin has viscosity _____ the viscosity of water:

Question # 14

One torr is equal to

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar
2 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
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 Fire fighters have a jet attached to the head of their water pipes in order to head of their water pipes in order to
A. Increase the mass of water flowing per second
B. Avoid wastage of water
C. Increase the velocity of water flowing out
D. Increase the volume of water flowing per second
5 According to Stoke's law, drag force depends on
A. Initial velocity
B. Final velocity
C. Terminal velocity
D. Instantaneous velocity
6 What is another name for laminar flow?
A. streamline
B. unsteady flow
C. turbulent flow
D. both (a) and (b)
7 The fluid is incompressible, if itsdensity is
A. zero
B. constant
C. very high
D. very small
8 The mass of fluid passing through any cross-section per unit time is called
A. electric flux
B. magnetic flux
C. mass flux
D. none of them
9 Which of the following options states the names of fluids in the order of increasing viscosity?
A. mercury, motor oil, methanol
B. methanol, mercury, motor oil
C. motor oil, mercury, methanol
D. methanol, motor oil, mercury
10 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

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