Radiation And Microwave Techniques Set 8 MCQs

This set of Radiation and Microwave Techniques Multiple Choice Questions & Answers (MCQs) focuses on Radiation And Microwave Techniques Set 8

Q1 | Which of the following can be used for amplification of microwave energy?

magnetron

reflex klystron

traveling wave tube

gunn diode

Q2 | When the electric field applied to GaAs specimen is less than the threshold electricfield, the current in the material:

increases linearly

decreases linearly

increases exponentially

decreases exponentially

Q3 | The primary purpose of the helix in a traveling-wave tube is to

prevent the electron beam from spreading in the long tube

reduce the axial velocity of the rf field

ensure broadband operation

reduce the noise figure

Q4 | A cavity resonator can be represented by

an lc circuit

an lcr circuit

a lossy inductor

a lossy capacitor

Q5 | Ionospheric preparation is not possible for microwaves because

microwaves will be fully absorbed by the ionospheric layers

there will be an abrupt scattering in all directions

microwave will penetrate through the ionospheric layers

there will be dispersion of microwave energy

Q6 | Which of the following is not possible in a circular wave guide ?

te10

te01

te11

te12

Q7 | The maximum theoretical output circuit efficiency of a double resonator klystronamplifier is

25%

50%

58%

85%

Q8 | The substrate of an MMIC must be a _____________ to accommodate thefabrication of all the type of devices.

semiconductor

insulator

partial conductors

metals operable at high frequencies

Q9 | For the capacitors used in MMICs, the insulating dielectric films used are:

air

sio

titanium

gaas

Q10 | Processing in MMICs is done by __________

ion implantation

net list generation

floor planning

none of the mentioned