1. must be a resistance
2. must be a distortionless line
3. may not be a lossless line
4. may not be a distortionless line
may not be a distortionless line
1. all the resonant frequencies of a microwave cavity are harmonics of a signal frequency
2. No two of the resonant frequencies of a microwave cavity are harmonics of a singlefrequency
3. Resonant frequencies of a microwave cavity from distinct set of harmonically related frequency
4. none of the above ,because a microwave cavity does not resonate at a number offrequencies
Resonant frequencies of a microwave cavity from distinct set of harmonically related frequency
1. must have their beamwidths also equal
2. cannot have their beamwidths equal because they are dissimilar antennas
3. may not necessarily have their maximum power gains equal
4. must have their effective aperture areas (capture areas) also equal.
may not necessarily have their maximum power gains equal
1. N alone and not by d
2. d alone and not by N
3. the ratio,(N/d)
4. the product,(Nd)
the product,(Nd)
1. to prevent mode jumping
2. to increase the separation between the resonant frequencies in the adjacent modes
3. to reduce the back heating of the cathode
4. to increase the output of the magnetron
to increase the separation between the resonant frequencies in the adjacent modes
1. 06
2. 07
3. 12
4. 13
13
1. 0.2
2. 0.3
3. 0.5
4. 1.0
0.3
1. 1/(1 + j2ω)
2. sin(ω)/ω
3. 1/(2 + jω)
4. jω/(2 + jω)
1/(2 + jω)
1. 0
2. 2-0.25 cos (2t - 0.125π)
3. 2-0.5 cos (2t - 0.125π)
4. 2-0.5 cos (2t - 0.25π)
2-0.5 cos (2t - 0.25π)
1. -0.5
2. 0
3. 0.5
4. ∞
0.5