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Q. Explain Wireless electromagnetic channels?
Wireless electromagnetic channels are used in wireless communication systems, in which the electromagnetic energy is coupled to the propagation medium through an antenna that serves as a radiator. The physical size and configuration of the antenna depend mainly on the frequency of operation. For example, a radio station transmitting AM frequency band of 1 MHz (with a corresponding wavelength of λ = c/fc = 300 m) requires an antenna of at least 30 m (approximately one-tenth of the wavelength).
Speed Control Using Phase Controlled Converters Phase controlled converters converts a constant ac voltage into variable controlled dc voltage. This variable dc voltage
Properties of Conductors and Insulators: This unit provides the basic characteristics or properties of the most common materials which are classified as semiconductor, conduct
Checking at Site - Testing of Meter The routine testing of meters should be carried out once in 3 years. Further, surprise checks should be conducted at the consumer's install
Q. Find the frequency of oscillation, amplifier gain ? The transfer function is found to be where the equation is written as a Laplace transform (s=jw). Analysis of thi
Op code Format As we have seen in the section that the first byte of all the instruction is the op code. microprocessors reads this op code and decodes it to identif
Q. Discuss the output waveforms for a differentiating circuit. The output waveform from a differentiating circuit depends upon the time constants and shape of the input wave.Th
kindly tell me which text book is usefull forlearn the basic electricle.
Voltage, current, and charge control: The collector-emitter current can be seen as being controlled through the base-emitter current (current control), or through the base-emi
Q. When the quantum step size δv and the step size of f (t) are the same as in , the quantizer is said to have a gain of unity. If, on the other hand, the quantizer has a gain of K
a. Describe briefly with suitable diagrams, how power amplifiers are classified with reference to operating point? b. Get the maximum efficiency of class A direct coupled power
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