Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Explain mechanisms of propagation of radio communication.
Radio communication deals with electronic radiation of electromagnetic energy from one point to another through atmosphere or free space. It is possible only in a certain position ofelectromagnetic frequency spectrum. Currently, this portion includes frequencies from 9 kHz to 400 GHz.whereas there are international allocations for the radio spectrum up to 275 GHz, most of the commercial uses occur between 100 kHz and 20 GHz. Very few experimental systems have been operated beyond 100 GHz.
Different layers of atmosphere play a role in propagating radio waves. Atmosphere comprises four layers. Of the four layers, ionosphere and troposphere are useful for radio communication in certain frequency ranges. Many other radio frequencies pass straight through atmosphere and can be beamed towards satellites placed in interplanetary space
stress
Q. Derive the equations of the self bias circuit? A circuit which is used to establish a stable operating point is the self biasing configuration. The circuit is shown in Fig
what do we mean when we say that an equation is dimensionally correct?
Generation ofwide-band FM can be done by variousmeans.However, only themost common and conceptually the simplest one, known as the direct method, is considered here. It employs a
Q. A balanced electrical industrial plant load of 9.8 MW with 0.8 lagging power factor is supplied by a three-phase 60-Hz system having a maximum rating (load-carrying capacity) of
Code, Stack, Data, Extra Segment registers in 8086.
Q. What do you mean by sub address? A sub address, though a part of the ISDN address, isn't considered as an integral part of the numbering scheme. Sub address is carried in a
If the message has a spectrum where K and Wf are positive constants, sketch the spectrum of a standard AM signal that uses the message. Comment on the physical signi?cance
Q. For the capacitor shown in Figure connected to a voltage source, sketch i(t) and w(t).
A relay is essentially an electromechanical switch that opens and closes electrical contacts. A simplified relay is represented in Figure. It is required to keep the fenomagnetic p
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd