1-22
Figure 1-28A.—Reflection angle at various frequencies. LOW FREQUENCY.
Figure 1-28B.—Reflection angle at various frequencies. MEDIUM FREQUENCY.
Figure 1-28C.—Reflection angle at various frequencies. HIGH FREQUENCY.
Q-14. What interaction causes energy to travel down a waveguide?
Q-15. What is indicated by the number of arrows (closeness of spacing) used to represent an electric
field?
Q-16. What primary condition must magnetic lines of force meet in order to exist?
Q-17. What happens to the H lines between the conductors of a coil when the conductors are close
together?
Q-18. For an electric field to exist at the surface of a conductor, the field must have what angular
relationship to the conductor?
Q-19. When a wavefront is radiated into a waveguide, what happens to the portions of the wavefront
that do not satisfy the boundary conditions?
Q-20. Assuming the wall of a waveguide is perfectly flat, what is the angular relationship between the
angle of incidence and the angle of reflection?
Q-21. What is the frequency called that produces angles of incidence and reflection that are
perpendicular to the waveguide walls?
Q-22. Compared to the velocity of propagation of waves in air, what is the velocity of propagation of
waves in waveguides?
