pulse Click on Answer tab for Answers.

Introduction To Satellite Communication – 2 – 3

61. The saving in power in a SSB system is :

(a) 100%
(b) 75%
(c) >=75%
(d) 50%

ANSWER

EXPLANATION

62. De-emphasis circuit is used :

(a) After Modulation
(b) Prior to Modulation
(c) To De-emphasis low frequency components
(d) To De-emphasis high frequency components

ANSWER

EXPLANATION

63. In a Broadcast Super Heterodyne Receiver :

(a) The RF Amplifier normally works at 455 KHz above the carrier frequency
(b) Mixer input must be tuned to the signal frequency
(c) Local oscillator operates below the signal frequency
(d) Local oscillator frequency is normally double the IF

ANSWER

EXPLANATION

64. Time Division Multiplex :

(a) Can be used with PCM only
(b) Combines five groups into a super group
(c) Stacks 24 channel in adjacent frequency slots
(d) Interleave pulses belonging to different transmissions

ANSWER

EXPLANATION

65. The saving in power in DSBSC system modulated at 80% is :

(a) Nil
(b) 80%
(c) 88.3%
(d) 50%

ANSWER

EXPLANATION

1 2 3 4 5 6 7 8 9 10

Be a Part of The New & Next

MCQs fb  MCQs G+

Share the Knowledge

Leave a Reply

Your email address will not be published. Required fields are marked *

Shares
Copy Protected by Chetan's WP-Copyprotect.