Author Question: 18. ____________ are hollow tubes used to conduct electromagnetic energy at microwave frequencies. ... (Read 55 times)

tfester

  • Hero Member
  • *****
  • Posts: 534
18. ____________ are hollow tubes used to conduct electromagnetic energy at microwave frequencies.
 
  A. Antennas
  B. Transmission lines
  C. Cables
  D. Waveguides

Question 2

What is one of the simplest and yet most useful measuring instruments at very high frequencies?
 
  A. Time-domain reflectometry
  B. Slotted line
  C. Double-stub tuner
  D. Balun



sultansheikh

  • Sr. Member
  • ****
  • Posts: 335
Answer to Question 1

D

Answer to Question 2

B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

For a complete list of videos, visit our video library