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

Blood is an

Question # 2

If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term

Question # 3

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

Question # 4

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

Question # 5

Matter is made up of very tiny particles called

Question # 6

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

Question # 7

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

Question # 8

What are the SI base units of the coefficient of viscosity

Question # 9

According to the Bernoulli's theorem the pressure velocity are

Question # 10

Density of fluid is defined as:

Question # 11

Unit of viscosity is:

Question # 12

The blood pressure of a person

Question # 13

Where the streamlines are very close to each other, the pressure will be

Question # 14

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 # 15

When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 When the speed of a body in a fluid increases then the drag force
A. decreases
B. becomes zero
C. increases
D. non of them
2 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
3 Substances that do not flow easily have
A. large coefficient of viscosity
B. small coefficient of viscosity
C. either of them
D. none of them
4 In Bernoulli's theorem the relation between velocity and pressure is
A. Inverse
B. Direct
C. None of the above
D. Both a and b
5 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
6 When a water droplet falling freely through air, the drag force on water droplet increases with th
A. decrease in speed
B. increase in speed
C. pressure
D. none of them
7 The analysis of fluid motion becomes simplified by using
A. law of conservation
B. law of conservation of energy
C. both of them
D. none of them
8 The value of viscosity of a fluid is dependent on (at constant temperature)
A. the fluid itself
B. the fluid and its container
C. anything in contact with the fluid
D. all of the above
9 Where the streamlines are very close to each other, the pressure will be
A. low
B. zero
C. high
D. all of them
10 How much force is required to slide one layer of the liquid over the other layer is measured by
A. friction
B. density
C. viscosity
D. resistivity

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