Microwave Communication - Part 1 Online Exam Quiz
Microwave Communication - Part 1 GK Quiz. Question and Answers related to Microwave Communication - Part 1. MCQ (Multiple Choice Questions with answers about Microwave Communication - Part 1
The velocity factor of a transmission line depends on
Options
A : temperature
B : skin effect
C : relative permittivity of dielectric
D : none of the above
A loss less line of characteristic impedance Z 0 is terminated in pure reactance of - j Z 0 value. VSWR is
Options
A : 10
B : 2
C : 1
D : infinity
In a klystron amplifier the input cavity is called
Options
A : buncher
B : catcher
C : Pierce gun
D : collector
In a circular waveguide the dominant mode is
Options
A : TE 01
B : TE 11
C : TE 20
D : TE 21
The reflection coefficient on a line is 0.2 ?45°. The SWR is
Options
A : 0.8
B : 1.1
C : 1.2
D : 1.5
Microwave resonators are used in
Options
A : microwave oscillators
B : microwave narrow band amplifier
C : microwave frequency metres
D : all of the above
In a TWT the amplitude of resultant wave travelling down the helix
Options
A : increases exponentially
B : increases linearly
C : decreases exponentially
D : is almost constant
Which of the following is not a travelling wave?
Options
A : e = E m sin (? x - ? t )
B : e = E m cos (? x - ? t )
C : e = E m sin (? t - ? x )
D : e = E m sin (? x )
Both Impatt and Trapatt devices use avalanche effect
Options
A : True
B : False
C : -
D : -
In a directional coupler
Options
A : isolation (dB) equals coupling plus directivity
B : coupling (dB) equals isolation plus directivity
C : directivity (dB) equals isolation plus coupling
D : isolation (dB) equals (coupling) (directivity)
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