MICROWAVE COMMUNICATION QUIZ

S = λR/L

S = 3λR/L

S = 2λR/L

S = λR/RL

Loran A: 1950 kHz

Loran D: 10.2 kHz

Loran B: 900 kHz

Loran C: 100 kHz

100 watts

1,000 watts

10,000 watts

1,000,000 watts

May be decreased

Must be doubled

Must remain as before

Must be increased

To focus the beam of primary electrons

As a second anode and to prevent the build-up of secondary field

All of these

To shield the electron beam from unidirectional magnetic

Direct coax-helix match

All of these

Cavity match

Waveguide match

The number of the cavity resonators

The ratio of the dc cathode voltage to the magnetic flux density

The flux density of the external magnet

The dimension of each cavity resonator

Its electrical dimensions

Its physical dimensions

The mode of operation

The capacitor which tunes it

Raising the peak power of the transmitter

All of these

Narrowing the beam width and increasing the pulse duration

Lowering the pulse frequency

Radiation

Modulation

Attenuation

Propagation