Electronics and Communication Engineering - Microwave Communication

16.
The most commonly used magnetron is
cylindrical
parallel plate
inclined plate
flat plate
Answer: Option
Explanation:
No answer description is available. Let's discuss.

17.
The effect of earth's magnetic field on radiowaves is minimum when
the electric field lines of radio waves and flux line of earth's magnetic field are in the same direction
the electric field lines of radio waves and flux lines of earth's magnetic field are at right angles
the electric field lines of radiowaves and flux lines of earth's magnetic field oppose each other
both (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.

18.
A line of characteristic impedance Z0 branches into two line each with characteristic impedance Z0. The refracted voltage is
zero
infinite
equal to incident voltage
two third of incident voltage
Answer: Option
Explanation:
No answer description is available. Let's discuss.

19.
The resistance values of a PIN diode under positive bias and negative bias respectively are about
a few ohms and a kilo ohms
about 100 ohms and 1000 ohms
about 0.1 ohm and 100 ohms
about 1000 ohms and 10000 ohms
Answer: Option
Explanation:
No answer description is available. Let's discuss.

20.
A PIN diode can be used
as a shunt mounted switch
as a series mounted switch
both as series or shunt mounted switch
non of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.