Introduction to Transmission Lines

Transmission lines transmits digital signals only between two points occurs over a pair of parallel conductors.

• True

• False

Electrical power propagates along transmission lines in the form of TEM waves.

• True

• False

Transmission line analysis is used when?

• The frequency of operation is low

• The length of the transmission line is long

• None of the above

In general, a line is considered as a transmission line if its length exceeds how many wavelength?

• 1/8

• 1/16

• 1/4

• 1/2

Reflection of signal on the line must be avoided.

• True

• False

• Sometimes

Which is not an Application of Transmission Lines?

• Pulse generator

• tuned circuits

• Impedance matching

• Phase delay

Exact value of speed of light?

• 299 792 459 m/s

• 189,000 miles per second

• 299 792 458 m/s

• 299 792 358 m/s

One example of unbalanced line?

• twin-lead

• coaxial cable

• BALUNS

• SHIELDED CABLE PAIR

Which is not a balanced line?

• OPEN-WIRE TRANSMISSION LINE

• TWIN LEAD TRANSMISSION LINE

• CONCENTRIC TRANSMISSION LINE

• SHIELDED CABLE PAIR

It is characterized by high radiation losses and is susceptible to noise.

• open-wire line

• Twin lead

• Twisted pair

• Coaxial lines