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

Bernoulli's equation is based upon law of conversation

Question # 3

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 # 4

A person standing near the track of a fast moving train has tendency to fall towards it because of

Question # 5

The body will move with terminal velocity when it acquires

Question # 6

Blood vessels can be stretch like rubber, therefore they are

Question # 7

When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:

Question # 8

The body passing a viscous medium affected by:

Question # 9

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

Question # 10

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 # 11

Fluids resist force, This property is called

Question # 12

When a fluid is in motion, its flow can be considered as

Question # 13

A tube is tapered from 20 cm diameter to 2 cm diameter, the velocity at the first cross-section is 50 cm/s, then the velocity at the second cross-section is

Question # 14

A flowing liquid possess

Question # 15

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
A. Independent of h
B. Proportional to h1/2
C. Proportional to h
D. Proportional to h2
2 The equation of continuity is
A. A1A2 = V1V2
B. A1/V1 =A2/V2
C. V1/A1=V2/A2
D. A1V1 =A2V2
3 Substances that flow easily have
A. large coefficient of viscosity
B. small coefficient of viscosity
C. either of them
D. none of them
4 The blood pressure of a person
A. decrease with age
B. increase with age
C. has no effect with age
D. none of them
5 According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be
A. low
B. zero
C. high
D. all of them
6 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None
7 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
8 The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is
A. very high
B. very low
C. constant
D. zero
9 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
A. 1.3 m/s
B. 1.6 m/s
C. 1.9 m/s
D. 2.2 m/s
10 The terminal velocity of a small size spherical body of radius R moving in a fluid varies as
A. R
B. R2
C. 1/R
D. (1/R)2

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