Rajasthan Polytechnic Third Year Paper 2016 – Advance Communication System

Rajasthan Polytechnic Third Year Paper 2016 – Advance Communication System

What is the full form of PAM in communication ?
(a) Pulse Analog Modulation
(b) Pulse Amplitude Module
(c) Pulse Amplitude Modulation
(d) Power Amplitude Modulation

Which of the following is digital modulation technique?
(a) PAM
(b) PCM
(c) PWM
(d) PPM

Which one of the following modulation technique is most affected by noise ?
(a) ASK
(b) PSK
(c) FSK
(d) QPSK

On which of the following, effect of noise is minimum ?
(a) PWM
(b) PAM
(c) PPM
(d) PCM

On the division multiplexing
(a) Different sources use one time slot
(b) One source uses different time slots
(c) Diferent sources use different time slots
(d) Different sources use different frequencies

Which is true for frequency division multiplexing ?
(a) Different sources use one tranmitter
(b) Different frequency ranges used by different sources
(c) Different sources transmit from one transmitter simultaneously
(d) One source uses different transmitters

Which is true for digital communication ?
(a) Digital signal is converted into analog and sent
(b) Analog signal is converted into digital and sent
(c) Analog signal is sent without any change
(d) All options are correct

What is the full form of ASK ?
(a) Angle Shift Keying
(b) Analog Shift Keying
(c) Amplitude Shift Keying
(d) Anti Shift Keying

Which is true for TDM?
(a) There is no cross talk in it
(b) It does not require synchronization
(c) It requires modulator
(d) Signals mixes at one time

What is called information out of these?
(a) Unprocessed data
(b) Compressed data
(c) Distorted data
(d) Processed and grouped data