Waveguides MCQs : This section focuses on the "Waveguides" in Electromagnetic Theory. These Multiple Choice Questions (MCQs) should be practiced to improve the Electromagnetic Theory skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
Which waveguides are used at higher radio frequencies?
A. Conductor
B. Dielectric
C. Both A and B
D. None of the above
Question 2
Waves propagate in all directions in open space as spherical waves.
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say
Question 3
GWT stands for?
A. good wave testing
B. group wave testing
C. geometrical wave testing
D. guided wave testing
Question 4
The first structure for guiding waves was proposed by J. J. Thomson in ?
A. 1885
B. 1888
C. 1893
D. 1899
Question 5
Example of an optical waveguide is ?
A. microwave oven
B. optical fiber
C. radar
D. parabolic dishes
Question 6
The phenomenon employed in the waveguide operation is
A. Reflection
B. Refraction
C. Total internal reflection
D. Adsorption
Question 7
The waveguide is employed in the transmission lines, when operated at the range of
A. Hz
B. KHz
C. MHz
D. GHz
Question 8
The dominant mode in waveguide is the mode which has
A. Highest frequency
B. Highest wavelength
C. Lowest phase constant
D. Highest attenuation
Question 9
The cut off frequency for a waveguide to operate is
A. 3 MHz
B. 6 MHz
C. 3 GHz
D. 6 GHz
Question 10
Waveguides are used for transferring both power and communication signals.
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say