Electronics and Communication Engineering - Microwave Communication

31.
TE01 mode of propagation of electromagnetic energy
is merely the TE10 mode rotated 90°
is merely the TE10 mode rotated 180°
is the same as TE10 mode
either (b) or (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.

32.

Assertion (A): Slotted line is frequently used for microwave measurements.

Reason (R): The unknown impedance is mounted at the end of slotted line.

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is correct but R is wrong
A is wrong but R is correct
Answer: Option
Explanation:
No answer description is available. Let's discuss.

33.
Fibers have numerical aperture (NA) in the range of 0.15 to 0.4 Fibers with higher NA value would have
reduced losses
high bandwidth
reduced losses and low bandwidth
more losses and low bandwidth
Answer: Option
Explanation:
No answer description is available. Let's discuss.

34.
The following components are used to measure power output of a 2 kW TWT amplifier
  1. TWT
  2. Low pass/High pass filter
  3. Low power 20 dB attenuator
  4. 40 dB directional coupler with matched load
  5. Power meter.
The correct sequence of connections of these components is:
1, 4, 2, 3, 5
1, 3, 4, 2, 5
1, 2, 4, 3, 5
1, 4, 3, 2, 5
Answer: Option
Explanation:
No answer description is available. Let's discuss.

35.
Which part of radio spectrum is more crowded?
Lower frequency part
Higher frequency part
Both (a) and (b)
None of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.