Explore topic-wise MCQs in Microwave Engineering.

This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Microwave Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

In a diode frequency multiplier, an input signal of frequency fo applied to the diode is terminated with_________ at all frequencies other than required harmonic.

A. real impedances
B. reactive impedance
C. complex impedance
D. none of the mentioned
Answer» C. complex impedance
2.

REACTIVE_MULTIPLIERS_HAVE_A_DISADVANTAGE_THAT_THEY_CANNOT_BE_USED_AT_VERY_HIGH_FREQUENCIES_AND_THEY_BECOME_LESS_EFFICIENT.?$

A. true
B. false
Answer» B. false
3.

For_a_resistive_frequency_multiplier_of_multiplication_factor_2,_the_maximum_theoretical_conversion_efficiency_is:$

A. 50 %
B. 25 %
C. 75 %
D. 12.5 %
Answer» C. 75 %
4.

Resistive multipliers are more efficient as compared to reactive multipliers?

A. true
B. false
Answer» C.
5.

In a diode frequency multiplier, an input signal of frequency fo applied to the diode is terminated with_________ at all frequencies other than required harmonic.

A. real impedances
B. reactive impedance
C. complex impedance
D. none of the mentioned
Answer» C. complex impedance
6.

If a frequency multiplier has a multiplication factor of 10, then the increase in noise level due to frequency multiplication is:

A. 10 dB
B. 20 dB
C. 25 db
D. 15 dB
Answer» C. 25 db
7.

A major disadvantage of frequency multipliers is that they multiply the noise factor along with frequency.

A. true
B. false
Answer» B. false
8.

A reactive diode multiplier uses _______ as the key electronic component for frequency multiplication.

A. zener diode
B. light emitting diode
C. varactor diode
D. Gunn diode
Answer» D. Gunn diode
9.

The major drawback of frequency multipliers is that they have:

A. higher attenuation
B. complex construction methods
C. complex design
D. none of the mentioned
Answer» D. none of the mentioned
10.

__________ is an example for a frequency multiplier.

A. resistor
B. inductor
C. capacitor
D. transistor
Answer» E.
11.

Oscillators operating at millimeter wavelength are difficult to realize and are also less efficient.

A. true
B. false
Answer» B. false