Electronics and Communication Engineering - Microwave Communication

31.
Klystron amplifier is not used to amplifier very weak microwave signals due to
low gain for weak signals
low noise for weak signals
high noise
both (a) and (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.

32.
Which of the following modes in circular waveguides are circularly symmetric?
TE01
TE02
both (a) and (b)
neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.

33.
Which of the following lines behaves as infinite line?
a line terminated in inductance
a line terminated in capacitance
a short line
a line terminated in z0
Answer: Option
Explanation:
No answer description is available. Let's discuss.

34.
A rectangular waveguide has two stubs each length connected at the source end. The stubs are short circuted. Then
the longitudinal current is power current and current in stubs is reactive
the longitudinal current is reactive current and current in stubs is power current
both power and reactive exists in both longitudinal direction and stubs
the current in stubs is zero
Answer: Option
Explanation:
No answer description is available. Let's discuss.

35.
Performance of a PIN diode switch is represented by
insertion loss when switch is off
insertion loss when switch is on
insertion loss when switch is on and isolation loss when switch is off
insertion loss when switch is off and isolation loss when switch is on
Answer: Option
Explanation:
No answer description is available. Let's discuss.