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

What is another name for laminar flow?

Question # 2

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

Question # 3

Viscosity is defined as

Question # 4

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 # 5

The fluid is incompressible, if itsdensity is

Question # 6

Fluid friction is _____ the friction between two solid surfaces:

Question # 7

A massive object falls through a fluid:

Question # 8

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

Question # 9

Machine parts are jammed due to:

Question # 10

Drag force increases if speed of the object moving through the fluid:

Question # 11

How much force is required to slide one layer of the liquid over the other layer is measured by

Question # 12

When the velocity of a liquid flowing steadily in a tube increases, its pressure?

Question # 13

When a water droplet falling freely through air, the drag force on water droplet increases with th

Question # 14

The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called

Question # 15

Stock's law holds for:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey
2 High speed meteors rushing through air reduces to ashes because of:
A. Force of gravity
B. High resistance of air
C. Drag force
D. None of these
3 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
4 Which of the following is a characteristic of an ideal fluid?
A. it is non-viscous
B. it is incompressible
C. it's motion is steady
D. all of the above
5 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None
6 At the starting point of the free fall motion of an object, its acceleration will be
A. maximum
B. minimum
C. zero
D. none of them
7 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
8 Unit of viscosity is:
A. Kg m-1sec-1
B. N s m-2
C. J s m-3
D. All of these
9 A device used to measure the speed of liquid flow is known as
A. barometer
B. speedometer
C. sphygmomanometer
D. venture-meter
10 Bernoulli's equation is important in the field of
A. Electrical circuit
B. Magnetism
C. Photoelectric effect
D. Flow of fluids

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