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How is the circle diagram useful to find the input impendence of short and open circuited lines?
ECQB TLW | jayapradeepa S –
The internal inductance is zero. If the indicator is non linear, corrections must be applied to the readings obtained. What is dissipationless line?
The circle diagram may be used to find the input impendence of a line m of any chosen length. Define the term insertion loss The insertion loss of a line or network is defined as the number of nepers or decibels by which the current in the load is changed by the insertion.
EC Transmission Lines And Wave Guides May June Question Paper
What is double stub matching? The secondary constants of a line are: Give the input impedance of a dissipationless line. Define wave impedance and write the expression for wave impedance of TE waves in rectangular guide. Assuming leakage conductance to be nil, deduce an expression for attenuation transmssion phase constant without neglecting R.
The possible TM modes in a circular waveguide are: List the applications of transmision smith chart. Give the maximum and minimum input impedance of the dissipationless line.
Derive the expression for the resonant frequency of the semi circular cavity resonator? The TE 10 wave have the lowest cut off frequency compared to the TM11 mode. Derive the expression for the resonant frequency of the transmidsion cavity resonator?
Some of the higher order modes, having the same cut off frequencyare called degenerate modes. What is cut off frequency?
EC2305 Transmission Lines and Wave guides QUESTION PAPER
Explain about physical significance of TL? This requirement frequently calls for placement of the stub at an undesirable place from a mechanical view point.
The operating wavelength is 90 m. What wavveguides a finite line? The root values for the TE modes are: Enter the email address you signed up with and we’ll email you a reset link. When a signal having many frequency components are transmitted along the line, all the transmiswion will not have same time of transmission, some frequencies being delayed more than others. This type of distortion is called frequency distortion.
State the relation between standing were ratio S and reflection co-efficient k. Name the three basic configurations of coaxial resonators. Derive wavegyides Q-factor of a rectangular cavity resonator? What is the dominant mode for the rectangular waveguide? What are the characteristics of principal wave? Give reason for an open line not frequently employed for impedance matching.
An open line is rarely used for impedance matching waceguides of radiation losses from the open end,and capacitance effects and the difficulty of a smooth adjustment of length. Determine the reflection coefficient. Explain in following terms i Reflection factor ii Reflection loss iii Return loss 8. What is TE wave or H wave?
The possible TE modes in a circular waveguide are: How the telephone line can be made a distortion less line? The circular waveguides are avoided because of the following reasons: If the load impedance is not equal to the source impedance, then all the power that are transmitted from the source will not reach the load end and hence some power is wasted.
Derive the TE wave components in circular wave guides using Bessel functions?