![subject](/tpl/images/cats/User.png)
Engineering, 30.12.2019 23:31 rafrod75
Astandard x-band rectangular waveguide with dimensions a = 0.9 in and b = 0.4 in is filled with lossless polystyrene (er = 2.56). for the lowest-order mode of the waveguide, determine at 10 ghz the following values:
(a) cutoff frequency
(b) guide wavelength
(c) guided intrinsic impedance
(d) guided phase velocity
assume the waveguide of part 1 is to be interfaced with a hollow waveguide of the same dimensions.
to avoid reflections, an additional x-band waveguide (of the same dimensions) a quarter-wavelength long section is inserted between the two.
assume dominant mode propagation and that the operating frequency is 10 ghz.
(a) determine the guided intrinsic impedance of the quarter-wavelength section of waveguide.
(b) determine the dielectric constant of the lossless medium that must be used to fill the quarter-wavelength section waveguide.
(c) determine the length of the quarter-wavelength section waveguide.
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Engineering
![question](/tpl/images/cats/User.png)
Engineering, 03.07.2019 14:10
Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10
Answers: 1
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges
Answers: 1
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Machinery that is a key part of the process and without which the plant or process cannot function is classifed as: (clo4) a)-critical machinery b)-essential machinery c)-general purpose machinery d)-none of the specified options.
Answers: 1
You know the right answer?
Astandard x-band rectangular waveguide with dimensions a = 0.9 in and b = 0.4 in is filled with loss...
Questions
![question](/tpl/images/cats/en.png)
English, 17.06.2021 04:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 17.06.2021 04:30
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 17.06.2021 04:30
![question](/tpl/images/cats/istoriya.png)
History, 17.06.2021 04:30
![question](/tpl/images/cats/mat.png)
Mathematics, 17.06.2021 04:30
![question](/tpl/images/cats/mat.png)
Mathematics, 17.06.2021 04:30
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 17.06.2021 04:30
![question](/tpl/images/cats/en.png)
English, 17.06.2021 04:30
![question](/tpl/images/cats/ekonomika.png)
Business, 17.06.2021 04:30