Microwave Communication - Engineering

Q1:

Consider the following statements
  1. Dissipative attenuator has a fixed value of attenuation.
  2. Reflective attenuator has a fixed value of attenuation.
  3. Both dissipative and reflective attenuators are available only with fixed attenuation.
  4. Both dissipative and reflective attenuators are available with either fixed or variable attenuation.
Which of the above are correct?

A 1 only

B 1 and 2

C 1, 2 and 3

D 4 only

ANS:D - 4 only

Both dissipative and reflective attenuators are available with either fixed or variable attenuation.