Question 1
A high-frequency transmitter outputs a power of 20 W into a transmission line. An inline RF attenuator introduces an insertion loss of 3 dB. What is the RF power at the output of the attenuator?
Correct Answer:
10 W
Question 2
A low-noise RF preamplifier specifies a voltage gain of 20 dB across a matched 50 Ω system. By what linear factor does this amplifier multiply the input signal voltage?
Correct Answer:
Factor of 10
Question 3
What is the primary technical rationale for standardizing characteristic impedance at 50 Ω in wireless RF transmission lines, whereas 75 Ω is standardized in TV and broadcast distribution systems?
Correct Answer:
50 Ω represents the optimal trade-off between maximum RF power handling (approx. 30 Ω) and minimum dielectric loss (approx. 77 Ω), whereas 75 Ω achieves near-minimum RF signal attenuation for low-power reception.
Question 4
What is the theoretical free-space wavelength (lambda) of a radio signal transmitting at a frequency of 435.000 MHz (70 cm UHF band)?
Correct Answer:
68.96 cm
Question 5
A communications technician needs to construct a half-wave center-fed dipole antenna for a VHF emergency radio frequency of 150.0 MHz. Using an antenna velocity/shortening factor (Verkürzungsfaktor) of k = 0.95, what is the total physical end-to-end length of the dipole?
Correct Answer:
0.950 m (95.0 cm)
Question 1
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Prepare with the Meisterprüfung Kommunikationselektronik Practice Questions - Meisterprüfung Kommunikationselektronik (Austria) Exam practice quiz. This question bank includes 100 questions covering frequency, loss, signal, antenna, and standard. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Meisterprüfung Kommunikationselektronik Practice Questions - Meisterprüfung Kommunikationselektronik (Austria) Exam

This practice set contains 100 questions from the matching question bank and focuses on frequency, loss, signal, antenna, and standard. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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