Communication Systems questions
74 published questions with worked solutions.
- Given below are two statements : Statement I : For transmitting a signal, size of antenna ( ) should be comparable to wavelength...Not in JEE or NEET syllabus
- The amplitude of 15 sin(1000 ) is modulated by 10 sin(4 ) signal. The amplitude modulated signal contains frequency(ies) of A....Not in JEE or NEET syllabus
- This question has Statement −1 and Statement −2. Of the four choices given after the statements, choose the one that best...Not in JEE or NEET syllabus
- Given the electric field of a complete amplitude modulated wave as E = iE_c (1 + E_m E_c _mt ) _ct Where the subscript c stands...Not in JEE or NEET syllabus
- A radar has a power of 1 Kw and is operating at a frequency of 10 GHz. It is located on a mountain top of height 500 m. The...Not in JEE or NEET syllabus
- If a carrier wave c(t) = A sin _ct is amplitude modulated by a modulator signal m(t) = A sin _mt then the equation of modulated...Not in JEE or NEET syllabus
- This question has Statement-1 and Statement-2. Of the four choices given after the Statements, choose the one that best describes...Not in JEE or NEET syllabus
- Which of the following modulated signal has the best noise-tolerance ?Not in JEE or NEET syllabus
- A transmitting antenna at the top of a tower has a height 32 m and the height of the receiving antenna is 50 m. What is the...Not in JEE or NEET syllabus
- For sky wave propagation, the radio waves must have a frequency range in between:Not in JEE or NEET syllabus
- Long-range radio transmission is possible when the radio waves are reflected from the ionosphere. For this to happen the...Not in JEE or NEET syllabus
- A signal of 5 kHz frequency is amplitude modulated on a carrier wave of frequency 2 MHz. The frequencies of the resultant signal...Not in JEE or NEET syllabus
- A modulated signal C_m(t) has the form C_m(t) = 30 300 t + 10 ( 200 t - 400 t ). The carrier frequency f'_c the modulating...Not in JEE or NEET syllabus
- A signal of frequency 20 kHz and peak voltage of 5 Volt is used to modulate a carrier wave of frequency 1.2 MHz and peak voltage...Not in JEE or NEET syllabus
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