Electromagnetic theory miscellaneous
- The main disadvantage of the two-hole directional coupler is—
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The main disadvantage of the two-hole directional coupler is narrow bandwidth.
Correct Option: D
The main disadvantage of the two-hole directional coupler is narrow bandwidth.
- For transmission-line load matching over a range of frequencies, it is best to use a—
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For transmission-line load matching over a range of frequencies, it is best to use a double stub.
Correct Option: C
For transmission-line load matching over a range of frequencies, it is best to use a double stub.
- Short-circuited stubs are preferred to open-circuited stubs because the latter are—
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NA
Correct Option: C
NA
- Impedance inversion may be obtained with—
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Impedance inversion may be obtained with a quarter-wave line
Correct Option: C
Impedance inversion may be obtained with a quarter-wave line
- The velocity factor of a transmission line—
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The velocity factor of a transmission line depends on the dielectric constant of the material used.
Correct Option: A
The velocity factor of a transmission line depends on the dielectric constant of the material used.