Frequency range for satellite communication is 1 kHz to 100 kHz 100 kHz to 10 MH

CuriousTab

CuriousTab

Home Aptitude

Discussion

Home ‣ Electronics and Communication Engineering ‣ Microwave Communication Comments

Question
Frequency range for satellite communication is
Options
A. 1 kHz to 100 kHz
B. 100 kHz to 10 MHz
C. 10 MHz to 100 MHz
D. 1 GHz to 30 GHz

Correct Answer

1 GHz to 30 GHz

Microwave Communication problems

Search Results

4. Consider the following statements
1. Fading of signals is generally greatest near radio horizon.
2. Fading of signals is generally greatest in shadow zone.
3. Fading is small when a good optical path is present.
Which of the above statements are correct?
Options
A. 1, 2 and 3
B. 1 and 2 only
C. 1 and 3 only
D. 2 and 3 only

6. A TEM wave is incident normally on a perfect conductor. The E and H fields at boundary will respectively be
Options
A. minimum and maximum
B. minimum and minimum
C. maximum and minimum
D. maximum and maximum

7. As compared to LED, LASER has
1. higher emission efficiency
2. no tuning arrangement
3. narrow spectral width
4. provision for confinement
Of these statements
Options
A. 1, 2, 3 are correct
B. 1, 2, 4 are correct
C. 1 and 3 are correct
D. 1, 3, 4 are correct

8. Consider the following statements about a magic tee
1. The collinear arms are isolated from each other.
2. On of the collinear arms is isolated from E arm.
3. On of the collinear arms is isolated from H arm.
4. E and H arms are isolated from each other.
Of the above statements
Options
A. 1 and 2 are correct
B. 1 and 3 are correct
C. 1 and 4 are correct
D. 2 and 3 are correct

9. A directional coupler is used
Options
A. to transmit microwave signals
B. to generate microwave signals
C. to measure amplitude and phase of a travelling wave
D. both (a) and (b)

10. At a frequency equal to cutoff frequency in a rectangular wave guide
Options
A. the flow of electromagnetic energy is zero
B. the flow of electromagnetic energy is infinite
C. the flow of electromagnetic energy is 50% of maximum
D. the flow of electromagnetic energy is 10% of maximum

Comments

More in Electronics and Communication Engineering: