Top 150+ Solved Radiation and Microwave Techniques MCQ Questions Answer
Q. In rectangular waveguides, the dimensions a and b represent the
a. broad wall dimensions
b. broad wall and side wall dimension respectively
c. side wall and broad wall dimension respectively
d. side wall dimensions
Q. In transverse electric waves, which of the following is true?
a. e is parallel to h
b. e is parallel to wave direction
c. e is transverse to wave direction
d. h is transverse to wave direction
Q. The propagation constant for a lossless transmission line will be
a. real
b. complex
c. real and equal to phase constant
d. complex and equal to phase constant
Q. Which of the following parameter is non zero for a lossless line?
a. attenuation
b. resistance
c. conductance
d. phase constant
Q. The phase and group velocities does not depend on which of the following?
a. frequency
b. wavelength
c. phase constant
d. attenuation constant
Q. reflector electrode after the cavity.
a. backward wave oscillator
b. reflex klystron
c. travelling wave tube
d. magnetrons
Q. A major disadvantage of klystron amplifier is:
a. low power gain
b. low bandwidth
c. high source power
d. design complexity
Q. The material out of which PIN diode is made is:
a. silicon
b. germanium
c. gaas
d. none of the mentioned
Q. GaAs is used in the fabrication of GUNN diodes because:
a. gaas is cost effective
b. it less temperature sensitive
c. it has low conduction band electrons
d. less forbidden energy gap
Q. GaAs is used in fabricating Gunn diode. Gunn diode is:
a. bulk device
b. sliced device
c. made of different type of semiconductor layers
d. none of the mentioned
Q. The mode of operation in which the Gunn diode is not stable is:
a. gunn oscillation mode
b. limited space charge accumulation mode
c. stable amplification mode
d. bias circuit oscillation mode