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 product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is

Question # 2

The terminal velocity of water droplet of radius 1 x 10-4m and desity 1000 kg m-3descending through air of viscosity 19 x 10-6kg. m-1 s-1 is

Question # 3

The study of fluid in motion basically involves law of conservation of:

Question # 4

With increase of temperature, the viscosity of liquid and gases

Question # 5

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

Question # 6

The pressure will be low where the speed of the fluid is

Question # 7

The law of conservation of mass gives us the

Question # 8

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

Question # 9

In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.

Question # 10

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

Question # 11

Surface tension of water is reduced by adding

Question # 12

Which of the following options correctly states the equation of continuity for an ideal fluid?

Question # 13

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

Question # 14

Machine parts are jammed due to:

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Rate of flow can be expressed in
A. litre/sec
B. litre-sec
C. sec/litre
D. sec/litre-m
2 Pressure exerted by a gas on the walls of its container in due to
A. adhesion between the gas molecules and the container
B. cohesion between the gas molecules and the container
C. collision between the gas molecules and the container
D. surface tension of the gas
3 The effect of friction between different layers of a flowing fluid is described in terms of
A. motion of fluid
B. nature of fluid
C. colour of fluid
D. viscosity of fluid
4 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
5 The unit of viscosity is SI system is:
A. Kg-1m sec-1
B. Kgm-1 sec-1
C. Kg-1m-1 sec
D. None of these
6 The fluid is incompressible, if itsdensity is
A. zero
B. constant
C. very high
D. very small
7 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
8 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
9 If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm2will be
A. 1 cm
B. 2 cm
C. 8 cm
D. None
10 Bernoulli's equation is applicable for
A. turbulent flow
B. streamline flow
C. both (a) and (b)
D. all kinds of flows

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