Top 250+ Solved Electromagnetic Field MCQ Questions Answer
Q. In a microstrip line, there is _________metal strip over the substrate.
a. A thin
b. A thick
c. No
d. None of these
Q. A distortion less line has _________.
a. Non-vanishing attenuation constant
b. Constant velocity
c. Constant real characteristic impedance
d. All of these
Q. Voltage reflection coefficient is the ratio of _________ wave to_______ wave.
a. Incident, reflected
b. Reflected, incident
c. Incident, absorbed
d. Absorbed, incident
Q. ________ are very efficient in a frequency range of 3-300 GHz.
a. Transmission line
b. Wave guides
c. Both (a) and (b)
d. None of these
Q. Wave guides ________ in DC applications.
a. Can also be used
b. Cannot be used
c. None of these
d. Cannot say
Q. Below the cut-off frequency, there is_______________.
a. Attenuation
b. No attenuation
c. Amplification
d. None of these.
Q. _______ velocity is the one at which loss of constant phase propagatesdown the guide.
a. Medium
b. Phase
c. Group
d. None of these
Q. Information or energy through the wave guide travels at _______velocity.
a. Medium
b. Phase
c. Group
d. None of these
Q. _______velocity is that whose resultant repeated reflected wavestravel down the guide.
a. Medium
b. Phase
c. Group
d. None of these
Q. ________ vector is needed to determine power flow in wave guides.
a. Poynting
b. Average Poynting
c. Power
d. Phase
Q. Surface current density K on wave guide walls for ______ is given as
a. TM mode
b. TE mode
c. Both (a) and (b)
d. None of these
Q. At _______ frequencies, RLC resonant circuits are replaced byelectromagnetic cavity resonators.
a. Low
b. Medium
c. High
d. None of these
Q. Resonator cavities are used in _______.
a. Klystron tubes
b. Band-pass filters
c. Wave meters
d. All of these
Q. Cavity is a rectangular wave guide _______.
a. Open at both ends
b. Shorted at both ends
c. With one end open and the other shorted
d. None of these