Which of the following is NOT a characteristic of a geostationary satellite?
Orbital period of approximately 24 hours
Circular orbit
Located above the Earth's equator
Elliptical orbit
Related Questions
The maximum range, of radar is
Proportional to the cube root of the peak transmitted power
Proportional to the fourth root of the peak transmitted power
Proportional to the square root of the peak transmitted power
Not related to the peak transmitted power at all
In amplitude modulation, the bandwidth is
Twice the audio signal frequency
Thrice the audio signal frequency
Thrice the carrier wave frequency
Sum of audio signal frequency and carrier wave frequency
In an amplitude modulated wave for audio frequency of 500 cycle/second, the appropriate carrier frequency will be
50 cycles/s
100 cycles/s
500 cycles/s
50,000 cycles/s
The distance of coverage of a transmitting antenna is 12.8 km. Then, the height of the antenna is (Given that radius of earth = 6400 km)
6.4 m
12.8 m
3.2 m
16 m
Which of the following is not the main characteristic of laser beam?
Monochromatic
Directional
Coherent
Divergence
Range of frequencies allotted for commercial UHF TV broadcast is
470-960 kHz
47-960 MHz
470-960 MHz
47-960 kHz
Which of the following is the disadvantage of FM over AM
Larger band width requirement
Larger noise
Higher modulation power
Low efficiency
What is the value of frequency at which electromagnetic wave must be propagated for the D-region of atmosphere to have a refractive index of 0.5. Electron density for D-region is 400 electrons/cc
200 kHz
104.2 kHz
208.4 kHz
312.6 kHz
The output stage of a television transmitter is most likely to be a
Plate-modulated class C amplifier
Grid-modulated class C amplifier
Screen-modulated class C amplifier
Grid-modulated class A amplifier
Modulation is the phenomenon of
Superimposing the audio frequency signal over a carrier wave
Separating the audio frequency signal from the carrier wave
Separating carrier wave from the modulated wave
Any of (a), (b), (c) above
