1

GATE ECE 1988

Subjective

+8

-0

A rectangular waveguide with cross-section dimensions 5 cm by 3 cm is filled with a dielectric of relative permittivity 3.

(i) Determine the cutoff frequency of the$$T{E_{11}}$$ mode.

(ii) Determine the frequency at which this / mode has an attenuation of $$3\,\pi $$ nepers/m.

(i) Determine the cutoff frequency of the$$T{E_{11}}$$ mode.

(ii) Determine the frequency at which this / mode has an attenuation of $$3\,\pi $$ nepers/m.

2

GATE ECE 1988

Subjective

+8

-0

A rectangular waveguide with cross-section dimensions 5 cm by 3 cm is filled with a dielectric of relative permittivity 3.

(i) Determine the cutoff frequency of the$$T{E_{11}}$$ mode.

(ii) Determine the frequency at which this / mode has an attenuation of $$3\,\pi $$ nepers/m.

(i) Determine the cutoff frequency of the$$T{E_{11}}$$ mode.

(ii) Determine the frequency at which this / mode has an attenuation of $$3\,\pi $$ nepers/m.

Questions Asked from Waveguides (Marks 8)

Number in Brackets after Paper Indicates No. of Questions

GATE ECE Subjects

Signals and Systems

Representation of Continuous Time Signal Fourier Series Fourier Transform Continuous Time Signal Laplace Transform Discrete Time Signal Fourier Series Fourier Transform Discrete Fourier Transform and Fast Fourier Transform Discrete Time Signal Z Transform Continuous Time Linear Invariant System Discrete Time Linear Time Invariant Systems Transmission of Signal Through Continuous Time LTI Systems Sampling Transmission of Signal Through Discrete Time Lti Systems Miscellaneous

Network Theory

Control Systems

Digital Circuits

General Aptitude

Electronic Devices and VLSI

Analog Circuits

Engineering Mathematics

Microprocessors

Communications

Electromagnetics