ECAT Pre Engineering Physics Chapter 6 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

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Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

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Question # 1

A high concentration of red blood cells increases its viscosity from

Question # 2

At high speed, fluid friction _____ and fuel consumption ___,:

Question # 3

According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area

Question # 4

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

Question # 5

What are the SI base units of the coefficient of viscosity

Question # 6

The body will move with terminal velocity when it acquires

Question # 7

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:

Question # 8

Bernoulli's equation is based upon law of conversation

Question # 9

The application of Bernoulli's equation is

Question # 10

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

Question # 11

According to the Bernoulli's theorem the pressure velocity are

Question # 12

0.10 cm can be written as:

Question # 13

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

Question # 14

At the starting point of the free fall motion of an object, its acceleration will be

Question # 15

When weight of an object falling freely becomes equal to the drag force, then the body will move with

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Blood pressure is measured by the instrument
A. stethoscope
B. sphygmomanometer
C. barometer
D. none of them
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 Ball pen functions on the principle of
A. Viscosity
B. Boyle's law
C. Gravitational force
D. Surface tnesion
4 Density of fluid is defined as:
A. Its volume to mass ratio
B. Product of volume and mass
C. Its mass of volume ratio
D. None of these
5 Rate of flow can be expressed in
A. litre/sec
B. litre-sec
C. sec/litre
D. sec/litre-m
6 The pressure will change in the pipe, as the fluid moves through that pipe of varying
A. cross-section
B. height
C. none of them
D. both of them
7 Fluids have three types of energies. The Bernoulli's equation combines those energies.which of the following is one of the three enrgies possessed by a fluid?
A. potential energy
B. pressure energy
C. strain energy
D. (a) and (b) only
8 High speed meteors rushing through air reduces to ashes because of:
A. Force of gravity
B. High resistance of air
C. Drag force
D. None of these
9 Fire fighters have jet attached to the head of their water pipes in order to
A. Increase the mass of water flowing per second
B. Increase the velocity of water flowing out
C. Increase the volume of water flowing per second
D. Avoid wastage of water
10 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

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