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Explain Thermosetting Plastic Materials.
Thermosetting Plastic Materials: They undergo huge changes while subjected to high temperatures for rather sometimes. They are called as baked and no longer can melt or be dissolved. They are more brittle, less elastic and lose their elasticity while subjected to prolonged heating. Therefore they cannot be remoulded in various shapes once they are hardened and set. They are used, while insulation is to withstand high temperatures without losing or melting its shape and also mechanical strength. Thermosetting plastic substances are space-polymers and the molecules branch off in different directions throughout polymerisation. Such structure makes them extremely rigid, fusible, poorly soluble, and enable of forming elastic films and threads. Examples are Phenol formaldehyde (i.e. Bakelite), Epoxy resins.
(a) Which one of the four digital-to-analog conversion techniques (ASK, FSK, PSK or QAM) is most susceptible to noise? Explain your answer. (b) Given the bit pattern 01001110,
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Structure and use of PNP transistor: The figure opposite is a schematic presentation of a PNP transistor related to two voltage sources. To construct the transistor conduct ap
Q. Show the schematic arrangement for: (a) one- dimensional addressing, and (b) two-dimensional addressing, if a 32-kbit ROM is used to provide an 8-bit output word.
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States Ohm's law Ohm's law describes that the current I flowing in a circuit is directly proportional to the applied voltage V and inversely proportional to the resistance R, g
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Explain RS232C Standard. RS232C: 1. Standard described for asynchronous communications where there is given timing among data bits and no fixed timing among the characters
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