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

A massive object falls through a fluid:

Question # 2

In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is

Question # 3

Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid

Question # 4

A fluid at a certain point has 50 J of potential energy per unit volume, 75 J of kinetic energy per unit volume,and 35 J of pressure energy per unit volume. the total energy of the fluid is

Question # 5

An object moving through a fluid experiences a retarding force called a

Question # 6

The rain drop falling from the sky reach the ground with

Question # 7

Viscosity of water is ______ that of air but ___ that of plasma.

Question # 8

At high altitude the blood oozes out of the nose and ear because

Question # 9

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

Question # 10

Surface tension of water is reduced by adding

Question # 11

The value of viscosity of a fluid is dependent on (at constant temperature)

Question # 12

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

Question # 13

The dimensions of viscosity are:

Question # 14

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 # 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 A fluid at a certain point has 50 J of potential energy per unit volume, 75 J of kinetic energy per unit volume,and 35 J of pressure energy per unit volume. the total energy of the fluid is
A. 125 J
B. 90 J
C. 160 J
D. 85 J
2 At high altitude the blood oozes out of the nose and ear because
A. The blood pressure increase at high altitudes
B. The percentage of oxygen in the air increase
C. The atmospheric pressure decrease there
D. The density of blood decrease at high altitudes
3 Stock's law holds for:
A. Motion through free space
B. Motion through viscous medium
C. Bodies of all shapes
D. None of these
4 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None
5 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
6 Where the streamlines are very close to each other, the pressure will be
A. low
B. zero
C. high
D. all of them
7 If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe
A. increases
B. decreases
C. becomes zero
D. is conserved
8 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
9 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
10 Viscosity is defined as
A. the friction between fluid and its container's walls
B. the internal friction between two layers of fluid
C. the resistance to flow a fluid experiences
D. the extent to which outside factors effect the fluid's flow

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