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Data Communication
1. Write short notes on:
a. Sky wave propagationb. Line of sight propagation
2. List and describe the different types of errors that occur during data transmission.
3. What is the concept of multiplexing. Explain about Frequency-division multiplexing.
4. Illustrate Code-Division Multiple Access (CDMA).
5. Define topology? Explain the types of LAN topologies.
6. Briefly write short notes on IEEE 802.1Q VLAN standard.
Q. Describe about digital communication systems fl A digital signal can be deflned as having any one of a finite number of discrete amplitudes at any given time. The signal coul
Q. Explain Read-only memory? ROM is nonvolatile (because it maintains its contents even when its power is shut off) and is used to store data and programs that do not change du
The mobility of free electrons and holes for pure silicon are 0.13 and 0.05 m2/V-S respectively. Find the intrinsic conductivity for silicon. Assuming ni = 1.5x 1016/cm3 at room te
The synchronous speed of a wound-rotor induction motor is 900 r/min. Under a blocked-rotor condition, the input power to the motor is 45 kW at 193.6 A. The stator resistance per ph
Q. Determine the bits required for a D/A converter to detect 1-V change when V ref = 15 V.
write a note on vulcanization
Construction - UniJunction Transistor: Construction: The basic structure of uni junction transistor is shown in fig. (a). It essentially consists of a lightly doped N type s
what is the function of CBW in the microprocessor
One battery having of three cells in series. External resistance is 5 Ω E.m.f each cell is 1.5V and internal resistance is 0.2?. Measure the current flow and draw the circuit.
Pins and Signals As discussed earlier that 8085 microprocessor chip has 40 pins shown various pins and signals of 8085 microprocessor. All these signals can be c
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