WorksheetsMOC QUIZ 3
Total questions: 15
Worksheet time: 8mins
The minimum VSWR possible is
0
1
2
Infinity
In H Plane Tee, the electric field is:
Perpendicular to the direction of propagation
Parallel to the direction of propagation
at an angle of 45 degrees to the direction of propagation
dependent on the frequency os the signal
What is the purpose of an E plane Tee?
To split an input signals into two output signals
To combine two input signals into one output signal
To amplify the input signal
To filter out unwanted frequencies from the input signal
________ is a three-port microwave device that can be lossless and matched at all spots.
Hybrid junction
Magic Tee
Circulator
Isolator
The total number of ones in the scattering matrix of three port circulator is:
5
2
3
4
The matrix of an ideal isolator is not ______
Unitary
Symmetric
Lossless
None of the mentioned
Forward attenuation provided by a resonance ferrite isolator is:
Zero
Low
High
None of the mentioned
When the electric field applied to GaAs specimen is less than the threshold electric field, the current in the material:
increases linearly
decreases linearly
increases exponentially
decreases exponentially
The klystron tube used in a klystron amplifier is a _________ type beam amplifier.
Linear beam
Crossed field
The device commonly used in microwave ovens is the:
TWT
Klystron
Magneton
FWCFA
Directional couplers for waveguides are characterized by:
their insertion loss
their coupling coefficient
their directivity
all of the above
The dominant mode of propagation in rectangular waveguides.
TM10
TE11
TE21
TE10
For Gunn diodes, gallium arsenide is preferred to silicon because the former
has a suitable empty energy band, which silicon does not have
has a higher ion mobility
has a lower noise at the highest frequencies
is capable of handling higher power densities
One of the following microwave diodes is suitable for very low-power oscillators only:
Tunnel
avalanche
GUNN
IMPATT
The waveguide tee in which the axis of the side arm is shunting the E field of the main waveguide
E plane Tee
H plane Tee
