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Showing posts with label Earn Money. Show all posts
Showing posts with label Earn Money. Show all posts

Monday, 11 February 2019

February 11, 2019

Amplitude Modulation

Amplitude Modulation

. Speech and music are transmitted hundreds of kilometers away by a radio transmitter. the picture
taken by the TV camera is sent many kilometers away to viewers. in all these cases, the career of
speech or picture is a high-frequency radio wave. the information is superposed on the radio wave.
it is carried along with it to the destination.
. Modulation is the process of com meaning the low frequency signal with a high-frequency radio
wave. the resultant wave is called modulated carrier wave.
 .  The high-frequency radio wave is modulation is called carrier wave. the low-frequency signal
is modulation is known as a modulation signal.
. Modulation is achieved by changing the amplitude are the frequency of the carrier wave is
accordance with the modulating signal. there are two types of modulations.
. Amplitude modulation a. M
  . Frequency modulation  f.m
. In in this type of modulation, the amplitude of the carrier wave is increased or decreased as
the amplitude of the superposing modulating signal increases and decreases.
 . Represent high-frequency carrier wave of consistent amplitude and frequency.
. Represents a low or radio frequency signal of the sine waveform.
. Shows the result obtained by modulating the carrier waves with the modulating wave.
the a.m. transmission frequencies range from 540 kilos Giga hard to 16 so gigahertz.
to transmit the signal for large range. M audio wave has a low-quality transmission of sound.
. In this type of modulation the frequency of the carrier wave increased or decreased as the modulatin
g signal amplitude increases or decreases but the carrier wave amplitude reminds system consists.
the frequency of the modulated carrier wave is highest when the signal amplitude is at its maximum
positive value.
. The frequency of the modulated carrier wave is lowest when the signal amplitude has maximum
aggregate value.

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Monday, 28 January 2019

January 28, 2019

Current Through Metallic Conductor


Current Through Metallic Conductor;

The valance electrons in metals are not bound to the individual atoms but are free to move in metals. These electrons are called free electrons. The speed of randomly moving depend upon temperature. 

Motion Of Free electron metals:

The free electrons in metals are in random motion just like the molecules of the gas in the cantainer.

Current Through Metals When No Battery is Connected:

In this case.the rate at which free electrons pass throngh in from right to left in the same as the rate at which they pass from left to right.As a result,the current throngh the wire is zero.

Current Through Metals When Battery is Connected:

When the end of wire are connected to a battery,an electrons field is set up at every point within the wire.A force acts on the free electrons in a direction opposite to that electric field E.due to the applied field,the electron change their random motion in such a way that they drift slowly with a constant velocity in a direction opposite to the field. The velocity is called drift velocity.Hence,a current begins to flow through the conducter.

Drift Velocity:

The average constant speed with which free electrons drift (flow) when current flows through the conductor is called drift velocity.The drift velocity is of the order of 10m/sec or 1mm/ sec.

Acceleration Of Electrons:

The force experienced by the free electrons does not produce a net acceleration because the electrons keep on colliding with the atoms of the conducter. The overall effort of colliding is to transfer the energy of accelerating electrons to the lattice atoms.
Steady current is maintained is the wire when a constant potential difference is applied across it. It produces the necessary field e along the wire

Note:

The velocity of electrons at room temperature due to thermal motion is several hundred kilometers per second.

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Tuesday, 1 January 2019

January 01, 2019

How to Earn Money URL Shorter In Pakistan

How to Earn Money In Pakistan And Withdraw Jazz Cash And Easypaisa:

1):

    Click The link and ReDirect The Website of Shrink Earn And Click The Signup Button:

2):     Signup:         Example

       User Name:      Ismat 
               Gmail:      asmatgmail.com
          Password:      Asmat11
     Re-Password:     Asmat11
    Solve capture:     All image selected



3):   Login:

                   Enter User Name
                   Enter Password
        


4):  Short Link:

                        Click New Shorten Link
                        Past Url
                        Click The Shorten
                        Copy The Link


5):                        Work

  Copy The Link And Share With friends And Earn Money
                          

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