Welcome to your Transmission Lines/Antennas MCQ practice assessment.
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What is the gain of an antenna over a half-wavelength dipole when it has 6 dB gain over an isotropic radiator
Frequencies in the UHF range propagate by means of
The frequency of operation of a dipole antenna cut to a length of 3.4 m a. 88 MHz
17.In a half-wave antenna, the center impedance is equal to _____.
Refers to the direction of the electric field vector in space
What is a disadvantage when using round rather than rectangular waveguide
The ratio of incident and reflected voltage waves representing transmission and reflection coefficients used to characterize a linear microwave device.
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.
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
What is meant by SWR of a transmission line?
VHF radio wave signals are propagated
Whereas resonant antenna is bidirectional, non-resonant antenna is ____.
The region within the influence of the induction field of an antenna.
Refers to the numeric ratio relating to the radiated signal strength of an antenna to that of another antenna
If a transmission line is terminated with a resistance equal to its characteristic impedance
Which does not use vertical polarization antenna?
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.
Calculate the time delay in nanosecond introduced by a 100 ft coaxial cable with a dielectric constant of 2.3.
An open circuit line greater than wavelenght/4 but less than wavelenght/2 in length will exhibit _____ reactance.
