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!
Q. What do you mean by Companding?
Companding is the process of compressing and expanding. It comprises compressing the signal at the transmitter and expanding it at the receiver. The modulating signal to be transmitted is passed through an amplifier that has correctly adjusted non linear transfer characteristic, favouring small amplitude signals. These are artificially large when they are quantized and so the effect of quantizing noise upon them is reduced. Correct amplifier relations are restored at the receiver by expander. It's desirable to agree to some standard for companding in order to realize hardware efficiencies and to permit receiving and sending by a variety of users. The most common application of companding is in voice transmission. Japan and North America have adopted a standard compression curve called µ law companding. Law µ companding formula is given by
Vout= ( Vmax X In (1+ µ Vin / Vmax) / In (1+ µ)
Where
VMAX= Maximum uncompressed modulating input amplitude.
VIN = Amplitude of the input signal at particular instant at time
µ = Parameter used to define the amount of compression
Vout= Compressed output voltage.
Q. Define amplification factor, drain resistance and transconductance and derive the relationship between drain resistance and trans conductance? Drain resistance It is the
disadvantages of shunt clippers
Q. A magnetic force exists between two adjacent, parallel current-carryingwires. Let I 1 and I 2 be the currents carried by the wires, and r the separation between them. Making u
Explain the effect of impurity on the conductivity of a semiconductor. To form a semi-conductor conductive, a small amount of appropriate impurity is added. This is then termed
INS Increment Register Pair Instruction Contents of the registers pair R P will be incremented by one and the result will be stored in the same register pair. It is
Q. A magnetic force exists between two adjacent, parallel current-carryingwires. Let I1 and I2 be the currents carried by the wires, and r the separation between them.
Question: (a) Show the Bode Plot, showing the relevant corner frequencies and slopes, for the unity feedback system whose open loop transfer function is given by: (b) T
brifly explain capacitance switching
Balanced Score Card or BSC We see in which the traditional model does not reflect the significance of intangible assets, their capturing and measuring mechanism and does not r
Q. Open-circuit and load characteristics of generator? The open-circuit and load characteristics of a separately excited dc generator, along with its schematic diagram of conne
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: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd