It is often necessary to change the physical direction of propagation or the wave's polarization in waveguides. What is the purpose of a twist section?
A. To produce shunting reactance across the guide
B. To change the plane of polarization of the wave
C. To change the physical direction of propagation
D. So low received power does no damage to the powerful transmitter output
Question 2
Why is a waveguide often pressurized with nitrogen?
A. To prevent contamination
B. To change the plane of polarization of the wave
C. To attach or weld a metal plate at the end of the waveguide
D. To prevent reflections
Two modes of evolutionary change.
a) Face the direction of your stroke. b) Avoid facing away from your stroke.
Long-wave energy flux is emitted from Earth
Increased amounts of "screen time" are contributing to decreased amounts of physical ...
Find the magnitude and the direction of the resultant vector of the two vectors below:
Change in the frequency of a lethal recessive allele, a