MULTIPLE CHOICE QUESTIONS FOR SATELLITE ORBITS – UNIT -1
1. INTELS INTELSA AT stand stands s for A. Intel Intel Satel Satellit lite e B. B. International International Telephone Satellite C. International Teleco!nication" eleco!nication" Satellite Satellite D. D. Internati International onal Satel Satellite lite 2. Which Which of the followi following ng is the rst actie actie satell satellite! ite! A. Echo I B. B. Telsta elstarr I ". C. Earl# Bir$ D. D. Sp# Sp#tn tni$ i$ I %. What A. B. ". D.
is the the appro&i' appro&i'ate ate path loss fro' fro' satellite(to(earth satellite(to(earth station! station! 1)) D* D* B. 1+) 1+) dB ". 1,+ 1,+ dB dB %. &'' $B
-. A helical helical antenna antenna is #sed for satellite trac$ing *eca#se of A. circ!lar (olari)ation B. B. 'ane# 'ane#era era*i *ilit lit ". ". *ea *ea'w 'wid idth th D. D. ga gain +. /epeaters /epeaters inside inside co''#nicatio co''#nications ns satellites satellites are are $nown $nown as A. Tranci ranciee eers rs B. B. Tran"(on$er" ". ". Transd#c ransd#cers ers D. D. TW TWT 0. is a satellite satellite that rotates rotates aro#nd aro#nd the earth earth in a low(altit#de low(altit#de elliptical or circ#lar pattern. A. eosnch eosnchron rono#s o#s satellit satellite e B. B. Non"#nc*rono!" "atellite ". 3rog 3rograd rade e satell satellite ite D. D. /etr /etrogra ograde de satellit satellite e ,. Is the geographical geographical represen representation tation of a satellite antenna antenna radiation radiation pattern A. Foot(rint B. B. Spot ". ". Eart Earth h D. D. /egio egion n 4. The s'allest s'allest *ea' *ea' of a satellite satellite antenna antenna radiation radiation pattern
A. B. ". D.
5one *ea' 6e'ispheric *ea' S(ot +ea lo*al *ea'
7. A satellite *ea' that coers al'ost -2.-8 of the earths s#rface. A. 5one *ea' B. 6e'ispheric *ea' ". Spot *ea' D. ,lo+al +ea 1). A. B. ". D.
What is the fre9#enc range of "(*and! 4.+ to 12.+ 6: . to /.&0 6: 12.7+ to 1-.7+ 6: 2,.+ to %1 6:
11. A satellite signal trans'itted fro' a satellite transponder to earth;s station. A.
"ollects er wea$ signals fro' a *roadcast satellite 6elical antenna Satellite $i"* LNA TWT
1%. What is a deice that detects *oth erticall and hori:ontall polari:ed signals si'#ltaneo#sl! A. Ort*oo$e tran"$!cer B. "rstal detector ". =ptoisolator D. Iso'ode detector 1-. detects the satellite signal relaed fro' the feed and conerts it to an electric c#rrent> a'plies and lower its fre9#enc. A. 6orn antenna B. LNA ". Satellite receier D. Satellite dish 1+. Is a loss of power of a satellite downlin$ signal d#e to earth;s at'osphere. A. At'ospheric loss
B. Pat* lo"" ". /adiation loss D. /?I 10. earth A. B. ". D.
What height '#st a satellite *e placed a*oe the s#rface of the in order for its rotation to *e e9#al to earth;s rotation! 20>-20.- 'iles &34&/. 'iles 2%>-20.- 'iles 22>-20.- 'iles
1,. A. B. ". D.
3oint on the satellite o*its closest to the earth. Apogee Peri5ee 3rograde 5enith
A. B. ". D.
The earth area coered * a satellite radio *ea'. Bea'width Bandwidth Foot(rint 5one
14.
17. What is the local oscillator @'i&er fre9#enc of the satellite with an #plin$ fre9#enc in 6: *and! A. %+)) 6: B. -+)) 6: ". &&&0 6: D. 2+++ 6: 2). A. B. ". D. 21. A. B. ". D. 22. A. B. ". D.
What $ind of *atter panels are #sed in so'e adance satellites er'ani#' *ased panels Silicon *ased panel ,ali! P*o"(*ate "olar (anel arra# ali#' Arsenide solar panel arra Satellite engine #ses Cet prop#lsion ion (ro(!l"ion "#"te li9#id f#el solar Cet Dene apogee. The point farthest fro' the earth. The point 'iddle fro' earth. The point closest fro' 'oon T*e (oint 6art*e"t 6ro t*e eart*.
2%. A. B. ". D.
Dene 3erigee. T*e (oint clo"e"t 6ro t*e eart*. The point farthest fro' the earth. The point 'iddle fro' earth. The point closest fro' 'oon
2-. The satellite is or*iting in the sa'e direction as the Earth;s rotation and at ang#lar elocit greater than that of the Earth. A. Retro5ra$e B. Snchrono#s ". 3osigrade D. Asnchrono#s 2+. ?ind the or*ital period of the satellite in a circ#lar or*it +)) $' a*oe the Earth;s s#rface A. A.1./ *r" B. %.2 hrs ". 2.- hrs D. 0.- hrs
