
Concept explainers
(a)
Find the value of the attenuation constant due to the dielectric losses and due to the conduction losses of the copper waveguide for
(a)

Answer to Problem 29P
The value of the attenuation constant due to the dielectric losses
Explanation of Solution
Calculation:
Given dimensions
Write the expression to calculate the cutoff frequency for
Here,
Write the expression to calculate the phase velocity of uniform plane wave in the lossless dielectric medium.
Here,
Substitute
Substitute
Write the expression to calculate the intrinsic impedance of a uniform plane wave in the medium.
Substitute
Write the expression to calculate the attenuation constant due to the dielectric losses.
Substitute
Write the expression to calculate the attenuation constant due to conduction losses for the
Here,
Write the expression to calculate the real part of the intrinsic impedance of the conducting wall.
Substitute
Simplify the above Equation.
Substitute
Conclusion:
Thus, the value of the attenuation constant due to the dielectric losses
(b)
Find the value of the attenuation constant due to the dielectric losses and due to the conduction losses of the copper waveguide for
(b)

Answer to Problem 29P
The value of the attenuation constant due to the dielectric losses
Explanation of Solution
Calculation:
Write the expression to calculate the cutoff frequency for
Substitute
Substitute
Substitute
Write the expression to calculate the attenuation constant due to conduction losses for the
From part (a), the real part of the intrinsic impedance of the conducting wall is,
Substitute
Conclusion:
Thus, the value of the attenuation constant due to the dielectric losses
Want to see more full solutions like this?
Chapter 12 Solutions
Elements of Electromagnetics
- Calculate the cutting time for a 4 in length of cut, given that the feed rate is 0.030 ipr at a speed of 90 fpm.arrow_forwardfor the values: M1=0.41m, M2=1.8m, M3=0.56m, please account for these in the equations. also please ensure that the final answer is the flow rate in litres per second for each part. please use bernoullis equation where needed if an empirical solutions i srequired. also The solutions should include, but not be limited to, the equations used tosolve the problems, the charts used to solve the problems, detailed working,choice of variables, the control volume considered, justification anddiscussion of results etc.If determining the friction factor, the use of both Moody chart and empiricalequations should be used to verify the validity of the valuearrow_forwardSolve this problem and show all of the workarrow_forward
- Solve this problem and show all of the workarrow_forwardProblem 2: An athlete, starting from rest, pulls handle A to the left with a constant force of P = 150 [N]. Knowing that after the handle A has been pulled 0.5 [m], its velocity is 5 [m/s] to the left, determine: a) A position constraint equation using the given coordinate system. b) An acceleration constraint equation. c) The acceleration of A using kinematics equations. d) The acceleration of B using your constraint equation. e) How much weight (magnitude) the athlete is lifting in pounds using Newton's 2nd Law. You must draw a FBD and KD of the circled assembly, assuming the pulleys are massless. Note: 1 [lbf] = 4.448 [N]. ХА Увarrow_forwardProblem 1: For each of the following images, draw a complete FBD and KD for the specified objects. Then write the equations of motion using variables for all unknowns (e.g., mass, friction coefficient, etc.), plugging in kinematic expressions and simplifying where appropriate. Assume motion in all cases, so any friction would be kinetic. M (a) Blocks A & B (Be careful with acceleration of B relative to accelerating block A) 30° (b) Block A being pulled up my motor M (use rotated rectangular coordinate system) 20° (c) Ball at C, top of swing (use path coordinates) (d) Parasailer/Person (use polar coordinates)arrow_forward
- where M1=0.41m, M2=1.8m, M3=0.56m, please use bernoulis equation where necessary and The solutions should include, but not be limited to, the equations used tosolve the problems, the charts used to solve the problems, detailed working,choice of variables, the control volume considered, justification anddiscussion of results etc.If determining the friction factor, the use of both Moody chart and empiricalequations should be used to verify the validity of the value.arrow_forwardQ3. The attachment shown in Fig.2 is made of 1040 HR. Design the weldment (give the pattern, electrode number, type of weld, length of weld, and leg size). All dimensions in mm 120 Fig.2 12 17 b =7.5 5 kN 60 60°arrow_forward15 mm DA 100 mm 50 mm Assuming the load applied P 80 kN. Determine the maximum stress in the bar shown assuming the diameter of the whole A is DA = 25 mm.arrow_forward
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY





