| 1. | Bunching occurs in reflex Klystron oscillators. Which of these statements are correct ? | |
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1, 2 and 3
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1 and 2 only
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1 and 3 only
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2 and 3 only
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Report Question| 2. | Scattering parameters are more suited than impedance parameters to describe a waveguide junction because ? | |
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the scattering parameters are frequency invariant whereas the impedance parameters are not so
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impedance parameters vary over unacceptably wide ranges
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scattering parameters are directly measurable but impedance parameters are not so
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scattering matrix is always unitary
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| 3. | Consider the following statements relating to the microstrip lines: 1. There is no radiation loss problem in microstrip lines. 2. Modes on microstrip line are only quasi-transverse electric and magnetic. 3. Microstrip line is also called as open strip line. Which of the statements given above are correct ? | |
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2 and 3 only
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1, 2 and 3
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1 and 3 only
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1 and 2 only
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| 4. | As the frequency is increased, the charging MVAR in a cable ? | |
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increases
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decreases
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decreases or remains the scheme
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remain the same
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| 5. | A line has a phase constant of 29.8 rad/m. At 1000 MHz the wavelength is ? | |
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29.8 m
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2.98 m
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2.1 m
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0.21 m
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| 6. | In a three cavity klystron amplifier, the oscillations are excited in ? | |
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input cavity
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output cavity
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intermediate cavity
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both (a) and (b)
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| 7. | Which of the following parameters is negligible in transmission lines ? | |
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R
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L
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C
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G
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| 8. | A quarter wave line open circuited at far end behaves as ? | |
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inductance
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L and C in parallel
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capacitance
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L and C in series
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| 9. | The dominant mode in a circular waveguide is a ? | |
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TEM mode
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TM01 mode
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TE21 mode
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TE11 mode
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| 10. | Which of the following is not possible in a circular waveguide ? | |
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TE10
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TE01
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TE11
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TE12
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