Description : As the height of a satellite orbit gets lower, the speed of the satellite _________. A. increases B. decreases C. remains the same D. None of the above
Last Answer : A. increases
Description : A satellite stay in orbit because the following two factors are balanced A. Satellite weight and speed B. Gravitational force and centrifugal force C. Centripetal force and speed D. Satellite weight and the pull of the moon and sun
Last Answer : B. Gravitational force and centrifugal force
Description : What is the height of a satellite in a synchronous equatorial orbit? A. 42000 mi B. 6800 mi C. 22,300 mi D. 35,860 mi
Last Answer : C. 22,300 mi
Description : What is the orbit height of a GPS satellite? A. 10,898 nmi B. 10,898 mi C. 10,898 km D. 10, 898 m
Last Answer : A. 10,898 nmi
Description : What is the first passive satellite transponder? A. Sun B. Early Bird C. Score D. Moon
Last Answer : B. Early Bird
Description : Calculate the speed of a satellite in an orbit at a height of 1000 km from the Earth’s surface.
Last Answer : Calculate the speed of a satellite in an orbit at a height of 1000 km from the Earth’s surface. ME = 5.98 × 1024 kg, R = 6.4 × 106 m.
Description : The first satellite launched for a geosynchronous orbit but unfortunately lost during orbit injection A. Syncom I B. Telstar I C. Sputnik I D. Early Bird I
Last Answer : A. Syncom I
Description : Refers to the satellite orientation with respect to the earth A. Satellite altitude B. Satellite position C. Satellite location D. Satellite orbit
Last Answer : A. Satellite altitude
Description : When the satellite are spaced 4˚ of the 360˚ complete circle, how many parking spaces or orbit slots are available? A. 90 B. 85 C. 95 D. 80
Last Answer : A. 90
Description : incidentally propose the geostationary scheme or orbit of the satellite in 1940s A. Arthur Clarke B. Carl Friedrich Gauss C. Samuel Morse D. Stephen Gray
Last Answer : A. Arthur Clarke
Description : The jet thrusters are usually fired to A. maintain altitude B. put the satellite into the transfer orbit C. inject the satellite in the geosynchronous orbit D. bring the satellite back to earth.
Last Answer : A. maintain altitude
Description : What is the orbit of Motorola’s Iridium satellite system? A. Polar B. Equatorial C. Inclined elliptical D. Inclined equatorial
Last Answer : A. Polar
Description : Which of the following satellite subsystem provides stabilization in orbit and senses changes in orientation? A. Attitude control subsystem B. TTC C. AKM D. Transponder
Last Answer : A. Attitude control subsystem
Description : ECE Board Exam March 1996 It is a spacecraft placed in orbit around the earth carrying onboard microwave receiver and transmitting equipments. A. Fiber optic equipment B. Communications satellite C. Wireless radio system D. Coaxial cable syste
Last Answer : B. Communications satellite
Description : ECE Board Exam March 1996 The point on the satellite orbit, closest to the earth is A. prograde B. perigee C. zenith D. apogee
Last Answer : B. perigee
Description : The maximum height of an elliptical orbit is called the A. Perigee B. Apex C. Zenith D. Apogee
Last Answer : D. Apogee
Description : What happens to the orbital velocity when a planet gets closer to the sun?
Last Answer : Feel Free to Answer
Description : The first passive satellite transponder. A. Early bird B. Score C. Moon D. Sputnik
Last Answer : C. Moon
Description : What height must a satellite be placed above the surface of the earth in order for its rotation to be equal to earth’s rotation? A. 26,426.4 miles B. 27,426.4 miles C. 23,426.4 miles D. 22,426.4 miles
Last Answer : D. 22,426.4 miles
Description : The main power sources for a satellite are A. batteries B. solar cells C. fuel cells D. thermoelectric generators 58. The maximum height of an ellip
Last Answer : B. solar cells
Description : The closer satellite is to Earth, its speed should be A. more fast B. more slow C. zero D. any constant value
Last Answer : more fast
Description : The physical location of a satellite is determined by its A. distance from the earth B. latitude and longitude C. reference to the stars D. position relative to the sun
Last Answer : B. latitude and longitude
Description : For interpolation of satellite data used for monitoring dynamic changes that occurs on the earth surface, the most suitable orbit for the satellite is: (A) Circular orbit (B) Sun-synchronous orbit (C) Near polar orbit (D) None of these
Last Answer : Answer: Option B
Description : _________ detects the satellite signal relayed from the feed and converts it to an electric current, amplifies and lower its frequency. A. Horn antenna B. LNA C. Satellite receiver D. Satellite dish
Last Answer : B. LNA
Description : _______ detects the satellite signal relayed from the feed and converts it to an electric current, amplifies and lower its frequency. A. Feedhorn B. Satellite dish C. Satellite receiver D. LNB
Last Answer : D. LNB
Description : Is temperature increases as altitude increases because you are moving closer to the sun?
Last Answer : Need answer
Description : At which direction does the moon orbit the sun?
Last Answer : half
Description : Why is the angle of the orbit (tilt) the moon uses to revolve around the sun?
Last Answer : The orbit of the moon around the sun is a wiggle around theEarth's orbit - because the moon is locked into the Earth'sgravitational grasp.The angle of the moon's orbit around the Earth was set by thecollision that formed the moon.
Description : The difference of levels between two stations A and B is to be determined. For best results, the instrument station should be (A) Equidistant from A and B (B) Closer to the higher station (C) Closer to the lower station (D) As far as possible from the line AB
Last Answer : (A) Equidistant from A and B
Description : The greater the pressure gradient the: a. Closer the isobars and the lower the temperatures b. Further the isobars will be apart and the higher the temperature c. Closer the isobars and the stronger the wind
Last Answer : c. Closer the isobars and the stronger the wind
Description : The greater the pressure gradient the: a. Closer the isobars and the lower the temperatures b. Further the isobars will be apart and the higher the temperature c. Closer the isobars and the stronger the wind d. Further the isobars will be apart and the weaker the wind
Description : The stability of transmitted signal from a simple Hartley oscillator single transmitter which is coupled to and antenna wire affected by ______. A. Chirping of oscillator B. Closer coupling between the oscillator and the antenna. C. Location of antenna D. Material of antenna
Last Answer : B. Closer coupling between the oscillator and the antenna.
Description : A satellite orbits the earth 200 km above the surface. What speed, in m/s, is necessary for a circular orbit? The radius of the earth is 6400 km and g = 9.2 m/s2 a.7200 b.6600 c.7800 d.6000 e.107 dynes
Last Answer : c. 7800
Description : A satellite travels at a constant speed in a circular orbit. The acceleration of the satellite is w) zero x) toward the center of the orbit y) away from the center of the orbit z) at a tangent to the orbit
Last Answer : ANSWER: X -- TOWARD THE CENTER OF THE ORBIT
Description : The core of an optical fiber has a a. Lower refracted index than air b. Lower refractive index than the cladding c. Higher refractive index than the cladding d. Similar refractive index with the cladding
Last Answer : c. Higher refractive index than the cladding
Description : The advantage of using top loading in a shortened HF vertical antenna is A. lower quality factor B. greater structural strength C. higher losses D. improved radiation efficiency
Last Answer : D. improved radiation efficiency
Description : The core of the optical fiber has ______. A. A medium index of refraction B. A lower index of refraction than the cladding C. A lower index of refraction than air D. A higher index of refraction than the cladding
Last Answer : D. A higher index of refraction than the cladding
Description : The moon that we see in the sky is a ______. (1) Planet (2) Star (3) Sun (4) Satellite
Last Answer : (4) Satellite Explanation: The moon that we see in the sky is a satellite. It is a companion of our earth and moves round it. Like our earth, there are eight other planets that get heat and light from the sun.
Description : Which one is Natural Satellite? A. Sun B. Moon (Answer) C. Venus D. Mercury
Last Answer : B. Moon (Answer)
Description : the fluid flow rate increases, the float of the Rotameter (A) Rises in the tube (B) Rotates at higher speed (C) Rotates at lower speed (D) Drops down in the tube
Last Answer : Option A
Description : TACAN is a navigational aid providing ___________. A. bearing and distance indication B. speed and height indication C. bearing and weather information D. instrument-landing glide paths
Last Answer : A. bearing and distance indication
Description : ECE Board Exam March 1996 TACAN is a navigational aid providing ___________. A. bearing and distance indication B. speed and height indication C. bearing and weather information D. instrument-landing glide paths
Description : A circular orbit around the equator with a 24-h period is called a/an A. elliptical orbit B. geostationary orbit C. polar orbit D. transfer orbit
Last Answer : B. geostationary orbit
Description : What is the orbit inclination of geostationary satellites? A. 0° B. 10° C. 20° D. 30°
Last Answer : A. 0°
Description : What causes the maximum usable frequency to vary? A. The temperature of the ionosphere B. The speed of the winds in the upper atmosphere C. The type of weather just below the ionosphere D. The amount of radiation received from the sun
Last Answer : D. The amount of radiation received from the sun
Description : What happens to the force of gravity on a rocket as it gets closer to Earth?
Last Answer : What is the answer ?
Description : What happens to the force of gravity on a rock as it gets closer to Earth?
Description : The speed of light in plastic compared to the speed of light in air is a. Slower b. Faster c. The same d. Either lower or faster
Last Answer : a. Slower