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Question :
What is the ISM band and what is particular about this frequency band? Name two wireless technologies that make use of the ISM frequency band.
a) Explain the following spread spectrum techniques:
i) Frequency Hopping Spread Spectrum ii) Direct Sequence Spread Spectrum
b) Describe the functioning of a Bluetooth piconet? Include the discussion of the concept of Master, slave, stand-by and parked devices in your description of the Bluetooth piconet.
c) Compare the given features of Bluetooth, Ultra Wide Band and WiFi:
Data rate, Coverage (distance covered), Application focus.
d) Consider the security aspects in both Wireless Local Area Networks (WLANs) and Wireless Personal Area Networks (WPANs).
i) What are the security problems introduced in Wireless LANs and Wireless PANs?
ii) What level of security can the IEEE 802.11 and Bluetooth standards provide?
Flow at low Mach number and zero incidence about M6 wing Results from FP were obtained corresponding to M ∞ = 0.2 and a = 0 and, as noted, with the input files generated by FP
Engine protection devices : Described below are typical protection devices that will override any excessive demands made on the engine by the pilot or by the control units.
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the effect when side relief angle is too much
PROPELLER TORQUE Propeller torque is produced by the aerodynamic drag on the blades when in motion. Propeller torque acts in the plane of rotation and opposes engine torque.
what is Engineering thermodynamics
HEAT TREATMENT PROCESS
Agricultural engineering does not easily mean only fruits and vegetables formed from the fields. Agriculture has come up with a dissimilar look now. When you open a paouch of chip
WORKING OF I.C. ENGINE Basically there are 2 types of internal combustion engines; the two stoke type and the 4-stroke type. A brief description of these is given below: 1.
Causes of unbalance Unbalance may be caused by a variety of factors occurring singly or in combination with others. These factors include:- a) Eccentricity Eccentricity
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