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Q. What are the supplementary services?
new services are called supplementary services and some of the prominent ones are as below:Category 1:
Category 2:
Category 3:
Category 4:
A subscriber issues commands to an exchange to deactivate or activate a service, record or clear data in subscriber line data area or solicit an acknowledgement from exchange. As an instance, a user can disable or enable STD facility on his line by using a command. A command may have or may not have data associated with it. Number of digits in the data, when present, can vary depending upon the command. Consequently, subscriber commands are designed to be of variable length necessitating use of an end-of-command symbol.
A 100-kW, dc shunt generator, connected to a 220-V main, is belt-driven at 300 r/min, when the belt suddenly breaks and the machine continues to run as a motor, taking 10 kW from t
To have the same value of P e , show that E b /N 0 in a coherent-ASK system has to be twice that in a coherent PSK system.
Can you explain working principle of TL/AC alternator? Ans . The core of the stator which is completely induced by the field coils, will get a residual magnetism if excited b
A network function is given by (a) For x(t) = δ(t), obtain y(t). (b) For x(t) = u(t), obtain y(t). (c) For x(t) = e -4t , obtain y(t). (d) Express the differenti
D Flip Flop As we have seen in the SR flip flop when the inputs S= R are applied the forbidden or indeterminate state occurs. This state can destabilize the SR file flop.
Q. Show the Enhancement of MOSFET ? Here also the slab of p type material called the substrate is provided. The substrate is connected to a source terminal. Many discrete devic
Two pure sine waves have similar amplitude "A" and frequency "f." They are out of phase through 180 degrees. If these two signals are added, the resulting waveform will be:
write down the debroglie equation
Explain How to Represent Power Lines? The equivalent circuit of a power line depends on the length of the line and on the accuracy of the model required. In general, any power
Two byte Instructions In these instruction the first byte specifies the operations code and the second byte specifies the operand. To identify two byte instructions o
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