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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.
Discuss merits and demerits of Macro over procedures. The MACRO directive informs assembler the starting of a macro which is used with ENDM directive to enclose a macro. The
what is rom organization
Explain DJNZ instructions of intel 8051 microcontroller? a) DJNZ Rn, rel Decrement the content of the register Rn and jump if not zero. b) DJNZ direct, rel Decreme
How many interrupts does 8085 have, mention them The 8085 has 5 interrupt signals; they are INTR, RST7.5, RST6.5, RST5.5 and TRAP
Explain the properties of low resistivity materials. Low resistivity materials: The conducting materials containing resistivity from 10 -8 to 10 -6 ohm-m come under this cl
Give some applications of constantan. Constantan is an alloy of nickel and copper. It is used in thermocouples, motor starters and precision resistors.
Explain the difference between a microprocessor and an embedded microcontroller
Q. A 10-hp, 230-V dc shunt motor takes a full- load line current of 40 A. The armature and field resistances are 0.25 and 230 , respectively. The total brush-contact drop is 2 V,
Consider a system described by the coupled difference equation y(k + 2) - ν(k) = 0 ν(k + 1) + y(k + 1) = u(k) where u(k) is the system input. (a) Find a state-variable
Discuss important properties and uses of Mica and Mica Products. Mica and Mica Products - Mica is an inorganic material. This is one of the best insulating materials availa
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