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Q. In an AM transmitter that transmits a total power of 1 kW, the unmodulated carrier power is 850 W. Compute the required value of (Si /Ni )AM at a receiver, if (S0/N0)AM = 2ηAM(Si /Ni )AM must be 103 for good performance.
Dielectric materials are (A) Insulating materials. (B) Semiconducting materials. (C) Magnetic materials. (D) Ferroelectric materials. Ans:
An abrupt silicon (n i = 10 10 cm -3 ) p-n junction consists of a p-type region containing 10 16 cm -3 acceptors and an n-type region containing 5 x 10 16 cm -3 donors. a)
Q. Explain Pulse-Code Modulation? PCM is the simplest and oldest waveform coding scheme for processing an analog signal by sampling, quantizing, and binary encoding. Figure sho
Assinment
Q. What is centralized SPC? In centralized control, all control equipment is replaced by a single processor which should be quite powerful. It should be capable of processing 1
Q. What is a darlington pair? The Darlington circuit consists of two cascaded emitter followers with infinite emitter resistance in the first stage.
Explain what is meant by a datapath and a datapath logic cell illustrating your answer by reference to a suitable function using diagrams as appropriate. Show using a diagram ho
Q. Digital controller for a steam-turbine driven generator? Figure illustrates the basic elements of a minicomputer system in terms of a block diagram for speed and voltage con
Discuss the function of instruction queue in 8086? In 8086, a 6-byte instruction queue is presented at the Bus Interface Unit (BIU). It is used to pre fetch and store at the ma
Explain Stator of a Synchronous Machine? The stator of a synchronous machine is made of thin laminations of highly permeable (silicon) steel in order to reduce the core losses.
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