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Microwave Communication

Microwave Communication
A high-power microwave pulse of the order of megawatts can be generated by a

Traveling-wave tube
Magnetron
Gunn diode
Reflex klystron

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Microwave Communication
The antenna separations (in meters) required for optimum operation of a space diversity system can be calculated from:where R = effective earth radius (m) and L = path length (m)

S = λR/L
S = 2λR/L
S = 3λR/L
S = λR/RL

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Microwave Communication
If the instantaneous RF potentials on the two sides of a magnetron cavity are of opposite polarity, the operation is in the

π/4 mode
π/2 mode
π mode
2π mode

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Microwave Communication
It is possible to increase the maximum range of a radar equipment by

Raising the peak power of the transmitter
Lowering the pulse frequency
All of these
Narrowing the beam width and increasing the pulse duration

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Microwave Communication
The highest frequency which a conventional vacuum tube oscillator can generate is not limited by the

Distributed lead inductance
Inter-electrode capacitance
Degree of emission from the cathode
Electron transit time

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Microwave Communication
What do you call an attenuation that occurs over many different wavelengths of the carrier?

Rayleigh fading
Slow fading
Rician fading
Wavelength fading

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MORE MCQ ON Microwave Communication

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