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question_answer1) If a carrier wave of\[1000\text{ }kHz\] is used to carry the signal, Find the length of transmitting antenna (in m).
question_answer2) What is the frequency (in\[kHz\]) above which radiation of electrical energy is particle?
question_answer3) For a carrier frequency of \[100\,kHz\] and a modulating frequency of 5 kHz what is the width of AM transmission (in \[kHz\])-
question_answer4) If critical frequency is \[40\text{ }MHz\] then calculate maximum density of electron is \[n\times {{10}^{12}}\]. then find n
question_answer5) In an amplitude modulated wave for audio-frequency of 500 cycles/second, the appropriate carrier frequency is \[n\times {{10}^{4}}\] cycles/second. Find n.
question_answer6) The T.V. transmission tower in Delhi has a height of 240 m. The distance (in Km), up to which the broadcast can be received, (taking the radius of earth to be \[6.4\times {{10}^{6}}m\]) is-
question_answer7) An audio signal \[15\sin 2\pi (1500t)\] modulates a carrier \[60\sin 2\pi (100000t)\] then determine modulation factor.
question_answer8) What is the modulation index of an FM signal having a carrier swing of\[100\,kHz\]when the modulating signal has a frequency of \[8\,kHz\].
question_answer9) Determine the characteristic impedance (in Ω) of a transmission line which has a capacitance of 35 pF/ft and an inductance of 0.25\[0.25\mu H/ft.\]
question_answer10) How many AM broadcast stations can be accommodated in a \[100\text{ }KHz\]bandwidth if the highest frequency modulating a carrier is \[5\text{ }KHz.\]
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