Introduction to Satellite Communication » Exercise – 1
4. If the maximum value of electron density is 1.24 x 106 cm^-3 the critical frequency for reflection at vertical incidence will be nearly :
(a) 1 MHz
(b) 5 MHz
(c) 7.5 MHz
(d) 5 MHzSubject Name : Communication Engineering Exam Name : IIT GATE, UPSC ESE, RRB, SSC, DMRC, NMRC, BSNL, DRDO, ISRO, BARC, NIELIT Posts Name : Assistant Engineer, Management Trainee, Junior Engineer, Technical Assistant Electronics & Communication Engineering Books
GATE 2023 Total Info ENGG DIPLOMA UGC NET Total Info IES 2023 Total Info PSUs 2022 Total Info CSIR UGC NET Total Info JAM 2023 Total Info M TECH 2023 Total Info RAILWAY 2022 Total Info
Related Posts
Introduction to Satellite Communication » Exercise - 122. For satellite communication the frequency should ….. the critical frequency of ionosphere. (a) Equal to (b) Less than (c) More than (d) None of the above- Introduction to Satellite Communication » Exercise - 138. For satellite communication, the lower limit of frequency is : (a) 1 MHz (b) 10 MHz (c) 20 GHz (d) 200 GHz
- Introduction to Satellite Communication » Exercise - 139. The complete band-width of a typical multipurpose satellite is : (a) 5 kHz (b) 5 MHz (c) 50 MHz (d) 500 MHz
- Introduction to Satellite Communication » Exercise - 134. When a communication satellite passes into earth’s shadow, its temperature drops to about : (a) 123 K (b) 223 K (c) 273 K (d) 373 K
- Introduction to Satellite Communication » Exercise - 148. Total band of frequencies allocated for satellite communications spread over : (a) 100 MHz (b) 4 GHz (c) 6 GHz (d) None of these