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

Bernoulli's equation is important in the field of

Question # 2

The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called

Question # 3

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

Question # 4

The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:

Question # 5

Viscosity is defined as

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

In a normal healthy person the value of diastolic pressure is

Question # 8

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 # 9

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

Question # 10

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

Question # 11

One torr is equal to

Question # 12

The term Brownian movement refers to

Question # 13

A body is floating in a liquid. The up thrust on the body is

Question # 14

Which of the following has the greatest coefficient of viscosity?

Question # 15

Which of the following is a characteristic of an ideal fluid?

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 According to Stoke's law, drag force depends on
A. Initial velocity
B. Final velocity
C. Terminal velocity
D. Instantaneous velocity
3 When a water droplet falls through air, the net force on it is
A. Net force = drag force - weight
B. Net force = weight - drag force
C. Net force = drag force + weight
D. Net force = weight + drag force
4 With the increase of temperature viscosity
A. Increase
B. Decrease
C. Remains same
D. Doubles
5 In a normal healthy person the value of diastolic pressure is
A. 75 - 80 torr
B. 100 torr
C. 120 torr
D. none of them
6 Fluid friction is _____ the friction between two solid surfaces:
A. Greater than
B. Smaller than
C. Equal to
D. None of these
7 A body is floating in a liquid. The up thrust on the body is
A. Equal to weight of liquid displaced
B. Zero
C. Less than the weight of liquid displaced
D. Weight of body-weight of liquid displaced
8 Surface tension of water is reduced by adding
A. Detergents
B. Camphor
C. Plastic
D. Both A and B
9 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
10 Where the streamlines are very close to each other, the pressure will be
A. low
B. zero
C. high
D. all of them

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