NAVEDTRA 14182 Ch3

Question 1

Which device is designed to guide electrical energy from one point to another

Answer 1

Transmission line

Question 2

Which type of line is most often used for power lines, rural telephone lines, and telegraph lines

Answer 2

2-wire open line

Question 3

Which type of line consists of 2 insulated wires twisted together to form a felxible line without the use of spacers

Answer 3

Twisted pair

Question 4

Line losses may be any of 3 types
Radiation/Induction
Dielectric
And what else

Answer 4

Copper

Question 5

Which type of losses occur because some magnetic lines of force about a conductor do NOT return to the conductor when the cycle alternates

Answer 5

Radiation

Question 6

What determines the amount of current that can flow when a given voltage is applied to an infinitely long time

Answer 6

Characteristic impedance

Question 7

The characteristic impedance of lines in actual use normally lies between 50 and ____ ohms

Answer 7

600 ohms

Question 8

If a line is NOT terminated in characteristic impedance, what is it said to be

Answer 8

Finite

Question 9

What are voltages called that are moving toward the receiving end of a line

Answer 9

Incident voltages

Question 10

Which type of line has NO standing waves of current and voltage

Answer 10

Non resonant

Question 11

Which type of line has a finite length and is NOT transmitted in its characteristic impedance

Answer 11

Resonant

Question 12

What is the ratio of maximum voltages to minimize the voltage on the line called

Answer 12

VSWR

Question 13

What are hollow metal tubes used to transfer energy from 1 point tot another

Answer 13

Wave guides