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zvonat [6]
3 years ago
8

True or False? In the electron flow theory, electrons flow from the positively charged body to the negatively charged body.

Engineering
2 answers:
Vedmedyk [2.9K]3 years ago
8 0

Answer:

false

Explanation:

kobusy [5.1K]3 years ago
3 0

I think it's false because the theory states that electrons flow from negative to positive. Since electrons are negatively charged, it follows that they are attracted by positively charged bodies and repelled by negatively charged bodies.

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Answer:

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3 years ago
A transmission line has a velocity factor of 0.88. You desire to create a quarter-wavelength phasing section at an operating fre
JulsSmile [24]

Answer:

a) λ = 2 meters

b) λ = 1.76 meters

c)In free space: length of phasing section = 0.5 meters and in dielectric medium: length of phasing section =0.44 meter

Explanation:

Given that:

velocity factor = 0.88

operating frequency = 150 MHz = 150 × 10⁶ Hz

phasing section is a quarter-wavelength = λ/4

a) Wavelength of free space:

λ = c/f

where c is the speed of light = 3×10⁸

λ = (3×10⁸)/150 × 10⁶

λ = 2 meters.

b) Wavelength of dielectric:

Velocity of dielectric = speed of light (c) × velocity factor

Velocity of dielectric = 3×10⁸ × 0.88 = 2.64 × 10⁸ m/s

wavelength dielectric = Velocity of dielectric /f = (2.64 × 10⁸)/150 × 10⁶ =1.76

wavelength dielectric = 1.76 meters

c) length of the phasing section in meters:

l = λ/4

In free space:

l = 2/4 = 0.5 meter

In dielectric

l = 1.76/4 = 0.44 meter

7 0
3 years ago
A 10 wt % aqueous solution of sodium chloride is fed to an evaporative crystallizer which operates at 80o C. The product is a sl
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3 0
3 years ago
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3 years ago
Consider an open loop 1-degree-of-freedom mass-spring damper system. The system has mass 4.2 kg, and spring stiffness of 85.9 N/
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Answer:

Damping ratio  \zeta =0.0342

Explanation:

Given that

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We know that critical damping co-efficient

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So \zeta =\dfrac{C}{C_c}

\zeta =\dfrac{1.3}{37.98}

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So damping ratio  \zeta =0.0342

 

3 0
4 years ago
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