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

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

Question # 2

Bernoulli's equation is based upon law of conservation

Question # 3

Two water pipes of diameters 4 cm and 8 cm are connected with a supply line. The velocity of flow of water in the pipe 4 cm diameter is

Question # 4

The drag force acting on a spherical droplet of radius 10-5m moving with a velocity of 1 cm/sec in a fluid of velocity 5.31 x 10-7m/sec. The units comes out to be:

Question # 5

The un-steady streamline flow is called

Question # 6

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 # 7

The irregular and unsteady flow of the fluid is called

Question # 8

What are the SI base units of the coefficient of viscosity

Question # 9

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

Question # 10

The dimensions of viscosity are:

Question # 11

Blood is an

Question # 12

Glycerin has viscosity _____ the viscosity of water:

Question # 13

Deep water almost runs still when surface water flow in rivers. What does it explains

Question # 14

The flow of an ideal fluid is

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The fluid which is incompressible and non viscous is called
A. Ideal fluid
B. Non-ideal fluid
C. Prefect fluid
D. All
2 Which of the following options states the names of fluids in the order of increasing viscosity?
A. mercury, motor oil, methanol
B. methanol, mercury, motor oil
C. motor oil, mercury, methanol
D. methanol, motor oil, mercury
3 What is another name for laminar flow?
A. streamline
B. unsteady flow
C. turbulent flow
D. both (a) and (b)
4 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
5 When the speed of a body in a fluid increases then the drag force
A. decreases
B. becomes zero
C. increases
D. non of them
6 The law of conservation of energy gives us
A. equation of continuity
B. Bernoulli's theorem
C. both of them
D. none of them
7 According to slok's law, drag force depends on
A. Radius of the spherical body
B. Terminal velocity of body
C. Coefficient of viscosity
D. All of above
8 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
9 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
10 The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:
A. More, lesser
B. Lesser, more
C. Both A and B
D. Lesser, lesser

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