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

The unit of viscosity is SI system is:

Question # 2

Fluid friction is _____ the friction between two solid surfaces:

Question # 3

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

Question # 4

The rain drop falling from the sky reach the ground with

Question # 5

The analysis of fluid motion becomes simplified by using

Question # 6

According to slok's law, drag force depends on

Question # 7

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

Question # 8

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

Question # 9

The equation of continuity is

Question # 10

In a normal healthy person the value of diastolic pressure is

Question # 11

Bernoulli's equation is important in the field of

Question # 12

Stock's law holds for:

Question # 13

At low speeds, the drag force is

Question # 14

The property of fluids due to which they resist their own flow is called:

Question # 15

When a water droplet falling freely through air, the drag force on water droplet increases with th

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Where the streamlines are very close to each other, the pressure will be
A. low
B. zero
C. high
D. all of them
2 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
3 If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity
A. v/A = constant
B. A/v = constant
C. Av = constant
D. None
4 In case of streamed lined flow of liquid, the loss of energy is
A. Maximum
B. Minimum
C. Infinite
D. equal to what is in turbulent flow
5 The SI unit of viscosity is
A. kg m-1s-1
B. kg ms-1
C. kg m-1s-2
D. kg m-1s
6 Fluids resist force, This property is called
A. Stiffness
B. Strength
C. Ductility
D. Elasticity
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 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
A. orifices
B. efflux
C. fluid
D. none of them
9 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
10 When the velocity of a liquid flowing steadily in a tube increases, its pressure?
A. Decreases
B. Increases
C. Remains same
D. Zero

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