Solapur-University-M.Sc. – Electronics (Semester-IV)-2019-On Microwave Devices, Antennas and Measurements
| Sr. No | Questions with multiple options |
| 1. | A circularly polarized wave has ____ dB ellipticity since Emax=Emin.
(a) 0 (b) 20 (c) 30 (d) 10 |
| 2. | For GaAS diode the threshold value of the electric field is _____
(a) 2000 V/cm (b) 1000 V/cm (c) 3000 V/cm (d) 4000 V/cm |
| 3. | For pure standing wave the SWR is ______
(a) Unity (b) Zero (c) Infinite (d) Less than unity |
| 4. | Along the length of the length of the line the VSWR varies from ____
(a) 1 to 10 (b) 10 to infinity (c) 1 to infinity (d) 0 to infinity |
| 5. | Practical efficiency of reflex klystron is ____
(a) 5% to 10% (b) 10% to 20% (c) 20% to 30% (d) 10% to 30% |
| 6. | The Gauss law employs _____ theorem for the calculation of charge density.
(a) Green theorem (b) Stokes theorem (c) Maxwell equation (d) Gauss theorem |
| 7. | Smith chart is based on the polar plot of _______
(a) Reactance (b) Voltage (c) Current (d) Voltage reflection co-efficient |
| 8. | The losses that occur in a transmission line is ______
(a) Conduction losses (b) Di-electric loss (c) Both of a and b (d) None of these |
| 9. | ______ band is the IEEE microwave frequency band designation for frequency range 8.0 GHz to 12.0 GHz.
(a) K (b) S (c) Ku (d) X |
| 10. | Fading effect in microwave transmission occurs due to _____
(a) Microwave frequency (b) Microwave beamwidth (c) Microwave directivity (d) Microwave transmission medium |
| Data Collected By – K. Jeyanthi | |
| Published on – 18th Nov 2021 | |
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