WTN1200 - Electromagnetic Waves

Question 1

The wavelength is the linear distance between the repeating crests (peaks) or repeating troughs (valleys) of a single cycle of a wave pattern. t/f

Answer 1

True

Question 2

Sine wave can be represented by which three parameters.

Answer 2

Peak amplitude, frequency and phase

Question 3

how is phase measured?

Answer 3

degrees or radians

Question 4

Electromagnetic waves travel at the speed of light, how is this represented approximately in powers?

Answer 4

3x10^8 meters per second

Question 5

Higher frequency waves attenuate faster than lower frequency waves. (T of F)

Answer 5

true

Question 6

Upfade is the result of
Downfade is the result of

Answer 6

Upfade: two signals arriving in phase
Downfade: two signals arriving out of phase

Question 7

MIMO technology used by 802.11n/ac/ax makes multipath…

Answer 7

…a positive effect

Question 8

the b ending of an RF
signal around an object is called…

Answer 8

diffraction

Question 9

this
propagation
phenomenon that
results in two or more
paths of a signal
arriving at a receiving
antenna is called…

Answer 9

multipath

Question 10

RF signal bends when it
travels through a medium
with a different density,
causing the direction of the
wave to change, this is called…

Answer 10

refraction

Question 11

When a wave hits a smooth object that is larger
than the wave itself, the wave may bounce in
another direction, this is called…

Answer 11

reflection