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 body will move with terminal velocity when it acquires

Question # 2

The dimensions of viscosity are:

Question # 3

Bernoulli's equation is based upon law of conversation of

Question # 4

The velocity of falling raindrop attains limited value because of

Question # 5

The SI unit of viscosity is

Question # 6

What is another name for laminar flow?

Question # 7

Internal friction of fluid is called

Question # 8

Bernoulli's equation is applicable for

Question # 9

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

Question # 10

The un-steady streamline flow is called

Question # 11

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 # 12

At high speed, fluid friction _____ and fuel consumption ___,:

Question # 13

The velocity of falling raindrops attains limited value because of

Question # 14

Above a certain velocity of a fluid is called

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 During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with
A. maximum speed
B. zero speed
C. maximum speed
D. none of them
2 Fire fighters have jet attached to the head of their water pipes in order to
A. Increase the mass of water flowing per second
B. Increase the velocity of water flowing out
C. Increase the volume of water flowing per second
D. Avoid wastage of water
3 What are the SI base units of the coefficient of viscosity
A. Kg m s-2
B. kgm2 s-2
C. Kg m s-1
D. kg m-1s-1
4 The law of conservation of mass gives us the
A. equation of continuity
B. Bernoulli's theorem
C. both of them
D. none of them
5 According to Stoke's law, drag force depends on
A. Initial velocity
B. Final velocity
C. Terminal velocity
D. Instantaneous velocity
6 The force exerted by the fluid in a hydraulic pump on the piston is 10 cm2, the fluid pressure on the piston is, in N/cm2
A. 20
B. 200
C. 2000
D. 20,000
7 At high speed, fluid friction _____ and fuel consumption ___,:
A. Increases, decreases
B. Increases, increases
C. Decreases, increases
D. None of these
8 The un-steady streamline flow is called
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
9 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
10 The rain drop falling from the sky reach the ground with
A. Constant terminal velocity
B. Constant gravitational acceleration
C. Variable acceleration
D. acceleration greater than g

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