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

In a surface tension experiment with a capillary tube water rises up to 0.1 m. if the same experiment is repeated on an artificial satellite, which is resolving around the earth, water will rise in the capillary tube up to a height of

Question # 2

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

Question # 3

0.10 cm can be written as:

Question # 4

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?

Question # 5

Surface tension of water is reduced by adding

Question # 6

What is another name for laminar flow?

Question # 7

A high concentration of red blood cells increases its viscosity from

Question # 8

Ball pen functions on the principle of

Question # 9

The flow of an ideal fluid is

Question # 10

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 # 11

Bernoulli's equation is based upon law of conservation

Question # 12

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

Question # 13

The internal pressure of the blood is

Question # 14

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

Question # 15

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Blood vessels can be stretch like rubber, therefore they are
A. rigid
B. hard
C. very thick
D. not rigid
2 Fluids resist force, This property is called
A. Stiffness
B. Strength
C. Ductility
D. Elasticity
3 A high concentration of red blood cells increases its viscosity from
A. 3 - 5 times that of mercury
B. 5 - 8 times that of mercury
C. 3 - 5 times that of water
D. 5 - 8 times that of water
4 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
5 If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term
A. P
B. 1/2 fv2
C. pgh
D. none of them
6 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
A. 2.5 ms-1
B. 3.2 ms-1
C. 4.3 ms-1
D. 1.1 ms-1
7 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
8 Substances that flow easily have
A. large coefficient of viscosity
B. small coefficient of viscosity
C. either of them
D. none of them
9 Where the streamlines are very far apart from each other, the pressure will be
A. low
B. zero
C. high
D. all of them
10 Above a certain velocity of a fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them

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