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An angle-modulated signal has the form u(t) = 100 cos [2πfct+4 sin 2πfmt ],where fc =10MHz and fm = 1 kHz. Determine the modulation indexβf or βp and the transmitted signal bandwidth, with BFM = 2(βf +1)fm or BPM = 2(βp +1)fm, (a) If this is an FM signal. (b) If this is a PM signal
Q. What do you mean by Noise? In any communication system there are usually two dominant factors that limit the performance of the system: 1. Additive noise, generated by el
Q. Illustrate working of Direct-coupled Amplifiers? Direct-coupled Amplifiers : The following figure shows a direct-coupled amplifier consisting of two stages. A dc voltage i
Q. Why is an emitter bypass capacitor used in an RC coupled amplifier? If an emitter resistor Re is used for self-bias in an amplifier and if it is desired to avoid the degene
Testing for Continuity : You may have observed sometimes that when all the connections in the appliance as well as the plug are made properly the appliance may still not work. Thi
an ideal dc generator has voltage reguiation
Mention the desirable properties of fuse materials. A fuse material must possess the properties as follows: Low resistivity - It means, thin wires can be used that will of
find the resultant of two forces 20N and25N acting at an angle 60 degree each other
Q. A shift register can be used as a binary (a) divide- by-2, and (b) multiply-by-2 counter. Explain. Q. Show a block diagram of a 4-bit shift-right register using JKFFs.
Q. Principle of Three-phase synchronous machines? In fact, with very few exceptions, three-phase synchronous machines are most commonly used for power generation. In general, t
List the uses of USART. USART- Universal Synchronous Asynchronous Receiver-Transmitters. It is used to transmit and receive the data in serial communication mode. It is
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