Section 2-C

Question 1

Electric Field (E Field)

Answer 1

Electromagnetic field that is associated with voltage.

Question 2

Magnetic Field (H field)

Answer 2

Field associated with current.

Question 3

Impedance

Answer 3

The opposition to the flow of AC.

Question 4

Characteristic Impedance

Answer 4

The opposition to AC due to the distribution of Inductance and Capacitance.

Question 5

Cut-off Frequency (In a transmission line)

Answer 5

The highest frequency that will pass down a transmission line.

Question 6

Types of line power loss

Answer 6

Resistive
Radiation
Induction
Capacitive

Question 7

Copper Loss

Answer 7

Electrical energy wasted as heat in copper wires.

Question 8

Skin Effect

Answer 8

The tendency for electrons to migrate to the outer surface of a conductor at high frequencies and powers.

Question 9

Litz Wire

Answer 9

Insulated multi-strand wire designed for frequency below 1 MHz.

Question 10

Capacitive Loss (Dielectric)

Answer 10

Heat loss that occurs between two wires.

Question 11

Induction Loss

Answer 11

All the energy leaving the wire in electromagnetic waves is inducted somewhere else this leaving the system.

Question 12

Radiation Loss

Answer 12

Magnetic lines of force do not return to the conductor and radiate outwards into space.

Question 13

Non-resonant Lines (Matched Lines)

Answer 13

All energy by the source is applied and used by the load device.

Question 14

Incident Waves

Answer 14

Energy waves that travel source to load.

Question 15

Resonant Lines (Mismatched Lines)

Answer 15

Mismatch of impedance throughout a line.

Question 16

Reflected Waves

Answer 16

Waves that are reflected back from the load.

Question 17

Standing Waves (Stationary Waves)

Answer 17

Waves that remain in a constant position within the lines.