Welcome to your Transmission Lines/Antennas MCQ practice assessment.
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17.In a half-wave antenna, the center impedance is equal to _____.
An electronic equipment used to measure standing wave ratio.
__________ is the amount of voltage induced in a wave by an electromagnetic wave
The frequency of operation of a dipole antenna cut to a length of 3.4 m a. 88 MHz
The power fed to a two-bay turnstile antenna is 100 watts. If the antenna has a 2dB power gain, what is the effective radiated power
Whereas resonant antenna is bidirectional, non-resonant antenna is ____.
The ratio of incident and reflected voltage waves representing transmission and reflection coefficients used to characterize a linear microwave device.
An electromagnetic wave consists of
How many cycles of a 1-MHz wave can a 6-mile transmission line accommodate?
VHF radio wave signals are propagated
For earth’s station transmitter with an output power of 40 dBw, a back-off loss of 13 dB, a total branching and feeder loss of 13 dB, and a transmit antenna gain of 40 dB, determine the EIRP.
If an antenna has a gain of 30 dB, it increases the output of the transmitter by
Which does not use vertical polarization antenna?
What is the longest wavelength that a 2.5-cm wide waveguide will support in the dominant mode (m = 1)?
Refers to the shortest distance in which a sky-wave signal will be returned to the earth. It includes the maximum ground-wave range and the width of the skip zone.
What is a disadvantage when using round rather than rectangular waveguide
A transmission line has a capacitance of 25 pF / ft. and an inductance of 0.15 mH / ft. Determine the characteristic impedance of the line
What is a short (< l/4) length of transmission line, shorted at one end and attached at the appropriate distance from the load for the purpose of matching a complex load to the transmission line?
A transmission line consisting of center conductor, a plastic insulation, a fine wire braid shield and outer plastic insulation as a jacket
