A-007-09: Waveguide, microstrip line
A-007-09-01:
Waveguide is typically used:
at frequencies above 1500 MHz
at frequencies above 2 MHz
at frequencies below 150 MHz
at frequencies below 1500 MHz
A-007-09-02:
Which of the following is NOT CORRECT? Waveguide is an efficient transmission medium because it features:
low hysteresis loss
low radiation loss
low dielectric loss
low copper loss
A-007-09-03:
Which of the following is an advantage of waveguide as a transmission line?
Low loss
Frequency sensitive based on dimensions
Expensive
Heavy and difficult to install
A-007-09-04:
For rectangular waveguide to transfer energy, the cross-section should be at least:
one-half wavelength
three-eighths wavelength
one-eighth wavelength
one-quarter wavelength
A-007-09-05:
Which of the following statements about waveguide IS NOT correct?
Waveguide has high loss at high frequencies, but low loss below cutoff frequency
In the transverse electric mode, a component of the magnetic field is in the direction of propagation
In the transverse magnetic mode, a component of the electric field is in the direction of propagation
Waveguide has low loss at high frequencies, but high loss below cutoff frequency
A-007-09-06:
Which of the following is a major advantage of waveguide over coaxial cable for use at microwave frequencies?
Very low losses
Frequency response from 1.8 MHz to 24 GHz
Easy to install
Inexpensive to install
A-007-09-07:
What is printed circuit transmission line called?
Microstripline
Dielectric substrate
Dielectric imprinting
Ground plane
A-007-09-08:
Compared with coaxial cable, microstripline:
has poorer shielding
has superior shielding
must have much lower characteristic impedance
must have much higher characteristic impedance
A-007-09-09:
A section of waveguide:
operates like a high-pass filter
operates like a low-pass filter
operates like a band-stop filter
is lightweight and easy to install
A-007-09-10:
Microstripline is:
printed circuit transmission line
a small semiconductor family
a high power microwave antenna
a family of fluids for removing coatings from small parts
A-007-09-11:
What precautions should you take before beginning repairs on a microwave feed horn or waveguide?
Be sure the transmitter is turned off and the power source is disconnected
Be sure the weather is dry and sunny
Be sure propagation conditions are unfavorable for tropospheric ducting
Be sure to wear tight-fitting clothes and gloves to protect your body and hands from sharp edges
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