Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > When the transmission line is lousy, then its...
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When the transmission line is lousy, then its characteristic impedance will not depend on which of the following?
- a)Length
- b)Operating frequency
- c)Sub synchronous frequency
- d)Length and Sub synchronous frequency
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
When the transmission line is lousy, then its characteristic impedance...
For a lousy line, the characteristic impedance will be independent of its sub synchronous frequency and length.
Most Upvoted Answer
When the transmission line is lousy, then its characteristic impedance...
Understanding Characteristic Impedance
Characteristic impedance (Z0) of a transmission line is a critical parameter that affects signal integrity. It is determined by the physical properties of the line, such as its inductance and capacitance per unit length.
Factors Influencing Characteristic Impedance
- Length: The characteristic impedance is independent of the length of the transmission line. It is a property of the line itself, defined by its material and geometric characteristics.
- Operating Frequency: Characteristic impedance can vary with frequency. However, for a given transmission line design, Z0 remains constant unless the frequency is high enough to cause significant changes in the line's behavior (like skin effect).
- Sub-Synchronous Frequency: This refers to frequencies below the fundamental frequency of the system. While the overall behavior of the transmission line may change at these frequencies, the characteristic impedance itself remains unaffected.
Conclusion: Why Option D is Correct
The characteristic impedance does not depend on:
- Length: It is intrinsic to the line.
- Sub-Synchronous Frequency: It simply indicates a range of frequencies where the line still maintains its inherent properties.
Therefore, option D ("Length and Sub synchronous frequency") is correct as these factors do not influence the characteristic impedance of a lousy transmission line.
By understanding these aspects, engineers can better design and analyze transmission systems for effective performance.
Characteristic impedance (Z0) of a transmission line is a critical parameter that affects signal integrity. It is determined by the physical properties of the line, such as its inductance and capacitance per unit length.
Factors Influencing Characteristic Impedance
- Length: The characteristic impedance is independent of the length of the transmission line. It is a property of the line itself, defined by its material and geometric characteristics.
- Operating Frequency: Characteristic impedance can vary with frequency. However, for a given transmission line design, Z0 remains constant unless the frequency is high enough to cause significant changes in the line's behavior (like skin effect).
- Sub-Synchronous Frequency: This refers to frequencies below the fundamental frequency of the system. While the overall behavior of the transmission line may change at these frequencies, the characteristic impedance itself remains unaffected.
Conclusion: Why Option D is Correct
The characteristic impedance does not depend on:
- Length: It is intrinsic to the line.
- Sub-Synchronous Frequency: It simply indicates a range of frequencies where the line still maintains its inherent properties.
Therefore, option D ("Length and Sub synchronous frequency") is correct as these factors do not influence the characteristic impedance of a lousy transmission line.
By understanding these aspects, engineers can better design and analyze transmission systems for effective performance.
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When the transmission line is lousy, then its characteristic impedance will not depend on which of the following?a)Lengthb)Operating frequencyc)Sub synchronous frequencyd)Length and Sub synchronous frequencyCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2025 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about When the transmission line is lousy, then its characteristic impedance will not depend on which of the following?a)Lengthb)Operating frequencyc)Sub synchronous frequencyd)Length and Sub synchronous frequencyCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When the transmission line is lousy, then its characteristic impedance will not depend on which of the following?a)Lengthb)Operating frequencyc)Sub synchronous frequencyd)Length and Sub synchronous frequencyCorrect answer is option 'D'. Can you explain this answer?.
When the transmission line is lousy, then its characteristic impedance will not depend on which of the following?a)Lengthb)Operating frequencyc)Sub synchronous frequencyd)Length and Sub synchronous frequencyCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2025 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about When the transmission line is lousy, then its characteristic impedance will not depend on which of the following?a)Lengthb)Operating frequencyc)Sub synchronous frequencyd)Length and Sub synchronous frequencyCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When the transmission line is lousy, then its characteristic impedance will not depend on which of the following?a)Lengthb)Operating frequencyc)Sub synchronous frequencyd)Length and Sub synchronous frequencyCorrect answer is option 'D'. Can you explain this answer?.
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