The following components are used to measure power output of a 2 kW TWT amplifie

CuriousTab

CuriousTab

Home Aptitude

Discussion

Home ‣ Electronics and Communication Engineering ‣ Microwave Communication Comments

Question
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:
Options
A. 1, 4, 2, 3, 5
B. 1, 3, 4, 2, 5
C. 1, 2, 4, 3, 5
D. 1, 4, 3, 2, 5

Correct Answer

1, 3, 4, 2, 5

Microwave Communication problems

Search Results

3. To ensure that only dominant TE₁₀ mode propagates in a rectangular waveguide, the operating frequency
Options
A. must be more than cutoff frequency of TE₁₀ mode
B. must be less than cutoff frequency of TE₂₀ mode
C. must be more than cutoff frequency of TE₁₀ mode and less than cutoff frequency of TE₂₀ mode
D. must be less than cutoff frequency of TE₁₀ mode

5. Assertion (A): In TE mode for rectangular waveguide.
Reason (R): In TM mode for rectangular waveguide.
Options
A. Both A and R are correct and R is correct explanation of A
B. Both A and R are correct but R is not correct explanation of A
C. A is correct but R is wrong
D. A is wrong but R is correct

7. A rectangular wave guide has two stubs each of length connected at the source end. The stubs are circuited. Then the stubs present
Options
A. an infinite impedance in shunt with line
B. an infinite impedance in series with line
C. a zero impedance in shunt with line
D. a finite impedance in shunt with line

Comments

More in Electronics and Communication Engineering: