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

Unit of viscosity is:

Question # 2

The equation of continuity is

Question # 3

0.10 cm can be written as:

Question # 4

The body passing a viscous medium affected by:

Question # 5

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

Question # 6

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 # 7

The velocity gained by the fluid in falling through the distance (h1 - h2) under the action of gravity is equal to the speed of the action of gravity is equal to the speed of the

Question # 8

According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area

Question # 9

If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity

Question # 10

Substances that flow easily have

Question # 11

Liquids and gasses have

Question # 12

In Bernoulli's theorem the relation between velocity and pressure is

Question # 13

Stoke;s law is not applicable when the speed of the object moving through a fluid is:

Question # 14

Which of the following is a characteristic of an ideal fluid?

Question # 15

In the case of an incompressible fluid in stead flow the net rate of flow of mass entering one end of the tube of flow is equal to the net rate of flow of mass leaving the other end. This equation is called

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Stoke;s law is not applicable when the speed of the object moving through a fluid is:
A. Zero
B. Small
C. Large
D. None of these
2 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
3 The study of fluid in motion basically involves law of conservation of:
A. Mass
B. Energy
C. Change
D. Both A and C
4 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
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 Fog droplets are suspended in air when their weight is balanced by:
A. Force of gravity
B. Upward trust due to air
C. Surface tension
D. None of these
7 Bernoulli's equation is applicable for
A. turbulent flow
B. streamline flow
C. both (a) and (b)
D. all kinds of flows
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 The pressure will be low where the speed of the fluid is
A. Zero
B. High
C. Low
D. Constant
10 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None

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