Top 150+ Solved Radiation and Microwave Techniques MCQ Questions Answer
Q. One of the following antenna types is best excited from a waveguide
a. horn antenna
b. helical antenna
c. biconical antenna
d. log periodic antenna
Q. The parabolic and lens antennas are used extensively at
a. sw
b. mw
c. microwaves
d. al of the above
Q. Micro strip can be fabricated using:
a. photolithographic process
b. electrochemical process
c. mechanical methods
d. none of the above
Q. The radar in which both transmission and reception is done using the sameantenna are called:
a. monostatic
b. bistatic
c. dipole radar
d. monopole radar
Q. __________ system obtains information about a target by transmitting a signaland receiving the echo from the target.
a. radar
b. sonar
c. radiometer
d. none of the above
Q. The solid area through which all the power radiated by the antenna is:
a. beam area
b. effective area
c. aperture area
d. beam efficiency
Q. Which one of the following device behaviour is governed by bulk effect?
a. impatt diode
b. gunn diode
c. tunnel diode
d. pin diode
Q. In a MTI radar, the quartz delay line is used to
a. match the phase of coho and output oscillator
b. match the phase of coho and stalo
c. match the signal with echo
d. subtract a complete scan from previous scan
Q. Voltage reflection coefficient can be defined as:
a. ratio of amplitude of reflected voltage wave to the transmitted voltage wave
b. ratio of amplitude of reflected voltage to the incident voltage wave
c. ratio of load impedance to the characteristic impedance of the transmission line
d. none of the mentioned
Q. Flow of power in transmission line takes place through:
a. electric field and magnetic field
b. voltage and current
c. voltage
d. electric field
Q. If there is no standing wave on a transmission line, then the value of SWR is:
a. 0
b. 1
c. infinity
d. insufficient data
Q. Smith chart is based on the polar plot of:
a. reactance
b. voltage
c. current
d. voltage reflection co-efficient
Q. The key difference between circuit theory and transmission line theory is:
a. circuit elements
b. voltage
c. current
d. electrical size
Q. Transmission line is a _________ parameter network.
a. lumped
b. distributed
c. active
d. none of the mentioned