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

Fluids resist force, This property is called

Question # 2

The unit of viscosity is SI system is:

Question # 3

The direction of the streamlines is the same as the direction of the

Question # 4

N s m-2is unit of:

Question # 5

A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that

Question # 6

The value for systolic blood pressure for a normal healthy person is

Question # 7

When the different streamlines cannot cross each other, then this condition is known as

Question # 8

The maximum drag force on a falling sphere is 9.8 N, it weight is

Question # 9

The analysis of fluid motion becomes simplified by using

Question # 10

With increase of temperature, the viscosity of liquid and gases

Question # 11

High speed meteors rushing through air reduces to ashes because of:

Question # 12

Bernoulli's equation is based upon law of conversation of

Question # 13

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 # 14

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 # 15

A device used to measure the speed of liquid flow is known as

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:
A. Starts increasing
B. Starts decreasing
C. Becomes constant
D. Is called escape velocity
2 Ball pen functions on the principle of
A. Viscosity
B. Boyle's law
C. Gravitational force
D. Surface tnesion
3 A tube tapers from 20 cm diameter to 2 cm, the velocity at first cross-section is 50 ms-1then velocity at second cross-section is
A. 5000 cms-1
B. 500 cms-1
C. 50 cms-1
D. 0.5 cm/s
4 Fluids resist force, This property is called
A. Stiffness
B. Strength
C. Ductility
D. Elasticity
5 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
6 Bernoulli's equation is based upon law of conservation
A. Mass
B. Momentum
C. Energy
D. None of these
7 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
8 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
9 With the increase of temperature viscosity
A. Increase
B. Decrease
C. Remains same
D. Doubles
10 The application of Bernoulli's equation is
A. Torricelli's theorem
B. Venture relation
C. Binomial theorem
D. Both a and b

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