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Musya8 [376]
3 years ago
9

Light energy produces the only voltage in a solar cell. (a)-True(T) (b)- false(F)

Engineering
1 answer:
Burka [1]3 years ago
7 0

Answer:

True

Explanation:

The fundamental steps involved in the operation of a solar cell are as follows:

  • Light is incident on the solar cell and this light energy is absorbed by the solar cell.
  • The absorbed energy results in the movement of the electron inside the cell which constitutes the electric current in the cell.
  • Electric current flows and electricity is produced.
  • Hence,in solar cell the light energy is responsible for the only voltage in the cell.
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Design a filter that has infinite DC gain, a gain of one from 1Hz to 100 Hz and filters (1storder) any signals above 100 Hz.a) S
EastWind [94]

Answer:

Attached below are the  sketches

answer :

c) G(s) = 100 / ( s + 100 )

d) y'(t)  + 100Y(s) = 100 X(s)

e) g(t) = e^-100t  u(t)

Explanation:

a) Sketch the bode plot

The filter here is a low pass filter

b) Sketch the s-plane

attached below.     pole ( s ) is at 100

c) write the transfer function of the filter

Transfer function ; G(s) = 100 / ( s + 100 )

d) write the differential equation

Y(s) / X(s) = 100 / s + 100

Y(s) [ s + 100 ] = 100 X(s)

= sY(s) + 100Y = 100 X(s)

∴ differential equation = y'(t)  + 100Y(s) = 100 X(s)

e) write out the unforced transient response

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f) write out the frequency response

attached below

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Is it possible to maintain a pressure of 10 kpa in a condenser that is being cooled by river water entering at 20 C.?
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Answer:

Yes,If we use river water which is entering at 20⁰ C in the condenser then it is possible to maintain the pressure of 10 KPa in condenser.

Explanation:

Yes,If we use river water which is entering at 20⁰ C in the condenser then it is possible to maintain the pressure of 10 KPa in condenser.

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