
The losses in transmission lines are:
(A) Radiation losses only
(B) Conductor losses only
(C) Dielectric heating only
(D) All of the above
Answer
153.3k+ views
Hint: There are mainly two types of losses in transmission lines: technical losses and non-technical losses. In technical loss we have radiation loss, conductor loss, dielectric heating loss, coupling loss and corona loss. In case of non-technical losses there are power theft, metering inaccuracies, etc.
Complete step by step solution:
In a transmission line we face the following types of losses:
(i) Radiation loss: It happens when the distance between the conductors in the transmission line is comparable to the wavelength. In such cases the electromagnetic and electrostatic field of the conductors acts as small antennas which conducts out energy to the nearby conducting materials.
(ii) Conductor loss: Conductor losses are often called power loss. It is mainly due to the resistance of the conductor. Conductor also is also due to frequency which is known as skin effect. Skin effect is the tendency of the alternating current by which they tend to increase the current density near the surface more than that at the core i.e. the current appears to flow on the skin of the conductor.
(iii) Dielectric heating loss: Dielectric heating loss is due to the potential difference between the two conductors of a transmission line. When air is the dielectric, loss is negligible. However, in case of solid conductors it increases with the frequency.
Therefore, the correct answer here is option D (All of the above).
Note: Two more types of loss should be kept in mind i.e. coupling loss and corona loss. Coupling loss occurs when connection between two transmission lines are made. Corona is the luminous discharge that occurs between two transmission lines. It generally destroys the transmission line.
Complete step by step solution:
In a transmission line we face the following types of losses:
(i) Radiation loss: It happens when the distance between the conductors in the transmission line is comparable to the wavelength. In such cases the electromagnetic and electrostatic field of the conductors acts as small antennas which conducts out energy to the nearby conducting materials.
(ii) Conductor loss: Conductor losses are often called power loss. It is mainly due to the resistance of the conductor. Conductor also is also due to frequency which is known as skin effect. Skin effect is the tendency of the alternating current by which they tend to increase the current density near the surface more than that at the core i.e. the current appears to flow on the skin of the conductor.
(iii) Dielectric heating loss: Dielectric heating loss is due to the potential difference between the two conductors of a transmission line. When air is the dielectric, loss is negligible. However, in case of solid conductors it increases with the frequency.
Therefore, the correct answer here is option D (All of the above).
Note: Two more types of loss should be kept in mind i.e. coupling loss and corona loss. Coupling loss occurs when connection between two transmission lines are made. Corona is the luminous discharge that occurs between two transmission lines. It generally destroys the transmission line.
Recently Updated Pages
JEE Main 2022 (June 29th Shift 2) Maths Question Paper with Answer Key

JEE Main 2023 (January 25th Shift 1) Maths Question Paper with Answer Key

JEE Main 2022 (July 29th Shift 1) Maths Question Paper with Answer Key

JEE Main 2022 (July 26th Shift 2) Chemistry Question Paper with Answer Key

JEE Main 2022 (June 26th Shift 2) Maths Question Paper with Answer Key

JEE Main 2022 (June 29th Shift 1) Physics Question Paper with Answer Key

Trending doubts
JEE Main 2025 Session 2: Application Form (Out), Exam Dates (Released), Eligibility, & More

JEE Main 2025: Derivation of Equation of Trajectory in Physics

Electric Field Due to Uniformly Charged Ring for JEE Main 2025 - Formula and Derivation

Electric field due to uniformly charged sphere class 12 physics JEE_Main

Degree of Dissociation and Its Formula With Solved Example for JEE

Displacement-Time Graph and Velocity-Time Graph for JEE

Other Pages
JEE Advanced Marks vs Ranks 2025: Understanding Category-wise Qualifying Marks and Previous Year Cut-offs

JEE Advanced 2025: Dates, Registration, Syllabus, Eligibility Criteria and More

JEE Advanced Weightage 2025 Chapter-Wise for Physics, Maths and Chemistry

Learn About Angle Of Deviation In Prism: JEE Main Physics 2025

Electrical Field of Charged Spherical Shell - JEE

Ideal and Non-Ideal Solutions Raoult's Law - JEE
