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

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

There are more bacteria in your mouth than there are people in the world.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

For a complete list of videos, visit our video library