Question
Reason (R): The mechanism of generation of microwaves, in a magnetron, involves interaction of electromagnetic fields with electrons moving in static electric and magnetic fields oriented at right angles to each other.
a.
Both A and R are correct and R is correct explanation of A
b.
Both A and R are correct but R is not correct explanation of A
c.
A is correct but R is wrong
d.
A is wrong but R is correct
Posted under Electronics and Communication Engineering
Interact with the Community - Share Your Thoughts
Uncertain About the Answer? Seek Clarification Here.
Understand the Explanation? Include it Here.
Q. Assertion (A): In the interaction region of magnetron an electron is subjected to three forces: force due to electric field, force due to magnetic field and centrifugal...
Similar Questions
Explore Relevant Multiple Choice Questions (MCQs)
Q. Which of the following is wrong for a magic used to tee?
View solution
Q. Roughly the time required for microwave cooking as compared to conventional cooking is
View solution
Q. If the minimum range of a radar is to be doubled, the peak power has to be increased by a factor of
View solution
Q. Which mode has the lowest cut off frequency in circular wave guides?
View solution
Q. Assertion (A): Klystron amplifiers use one or more intermediate cavities in addition to buncher and catcher cavity.
Reason (R): When one or more intermediate cavities are used the bandwidth can be increased.
View solution
Q. A wave Em cos (bx - ωt) is a backward wave.
View solution
Q. In a circular waveguide TE₂₁ mode has lowest cutoff frequency
View solution
Q. The number of TV channels which can be accommodated in a spectrum of 300 MHz is about
View solution
Q. The noise figure of multicavity klystron amplifier is very low
View solution
Q. Assertion (A): The velocity of electromagnetic waves on overhead lines and coaxial cables is the same.
Reason (R): Free space has an intrinsic impedance of 377 ohms.
View solution
Q. A cavity resonator is
View solution
Q. If antenna diameter is increased four times, the maximum range is increased by a factor of
View solution
Q. Assertion (A): Gunn diode is a transferred electron device.
Reason (R): A Gunn oscillator uses the phenomenon of transferred electron effect.
View solution
Q. Atomic and molecular resonance is observed in many substances
View solution
Q. A reflex klystron oscillator is a
View solution
Q. Consider the following applications:
1. TV tuning
2. Active filter
3. Microwave frequency multiplication
In which of above can a varactor diode be used?
View solution
Q. Consider the following statements:
1. Dissipative attenuator has a fixed value of attenuation.
2. Reflective attenuator has a fixed value of attenuation.
3. Both dissipative and reflective attenuators are available only with fixed attenuation.
4. Both dissipative and reflective attenuators are available with either fixed or variable attenuation.
Which of the above are correct?
View solution
Q. Impedance inversion may be obtained with
View solution
Q. Power gain of a multicavity klystron amplifier is
View solution
Q. The expression HZ = C cos(Bx) cos(Ay)yz is for
View solution
Recommended Subjects
Are you eager to expand your knowledge beyond Electronics and Communication Engineering? We've handpicked a range of related categories that you might find intriguing.
Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!