Match List - I with List - II Choose the correct answer from the options given below:
List-I List-II (A) Range (I) Range of frequencies over which communication system works (B) Band width (II) The largest distance between transmitter and receiver (C) Attenuation (III) Loss of strength of a signal during propagation (D) Transducer (IV) A device that receives an input in electrical form or provides an output in electrical form
(A)-(II), (B)-(I), (C)-(IV), (D)-(III)
The correct matching is as follows:
(A) Range refers to the largest distance between a transmitter and receiver (II).
(B) Bandwidth refers to the range of frequencies over which a communication system works (I).
(C) Attenuation is the loss of strength of a signal during propagation (III).
(D) A transducer is a device that receives an input in electrical form or provides an output in electrical form (IV).
Thus, the correct answer is (b).
Important Questions from Communication Systems
The wavelength of radiation emitted when He+ makes a transition from the state n = 3 to the state n = 2 will be:
(Take Rydberg constant R = 1.097 × 10⁷ m⁻¹)
Match List - I with List - II
List-I List-II (A) Range (I) Range of frequencies over which communication system works (B) Band width (II) The largest distance between transmitter and receiver (C) Attenuation (III) Loss of strength of a signal during propagation (D) Transducer (IV) A device that receives an input in electrical form or provides an output in electrical form Choose the correct answer from the options given below:
A carrier wave of peak voltage 14 V is used to transmit a message. What should be the peak voltage of the modulating signal in order to have a modulation index of 70%?
A carrier wave of peak voltage 14 V is used to transmit a message. What should be the peak voltage of the modulating signal in order to have a modulation index of 70%?
Which of the following frequency would be suitable for beyond the horizon communication using sky waves?
