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Question:
(a) Spreading the spectrum for signal transmission helps alleviate the narrow band interference problem. What is narrow band interference? State and describe 2 different techniques that can be used to spread the spectrum.
(b) Describe the following terms in the Bluetooth architecture: (i) Piconet (ii) Master (iii) Slave (iv) Parked Devices (v) Standby Devices (vi) Scatternet
(c) IEEE802.11 supports two types of network architectures, describe these architectures with the support of diagrams detailing the network components.
(d) New types of computer based devices arise from:
(i) Specialisation (ii) Convergence (iii) Disaggregation and decentralization
Explain each of the term above and provide an example for each of these cases.
(e) A key component to the success of Ubiquitous computing is sustainability. What is meant by sustainability when associated with Ubiquitous Computing and what are the main sustainability concepts associated with Ubiquitous Computing?
Virtual prototyping techniques provide unique way of interacting with computer data and images. These removes the barriers of key board, monitor and mouse and allow user to experi
The experimental set-up of Electron-beam welding. In the electron-beam process, electrons are emitted from the heated filament called the cathode and then focused into a beam wh
Here, it is assumed that the crack is effectively longer than the value measured on the side of the specimen. If one assumes that it is longer by an amount Δ, then the new crack le
explain processor
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Airflow control system principles: For any given engine there is only one set of conditions, mass flow, pressure ratio and rpm, at which all the compressor components are opera
All fluids are to some extent compressible but gases show significant changes in density if pressure and/or temperature is changed. Some gas flows can be treated as being incomp
Water is flowing at 0.5 ms-1 across a 7.5 cm diameter sausage at 80°C. If the bulk water temperature is 15°C, estimate the heat-transfer coefficient. a) What type of heat tranfe
explain compensated semiconductors
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