| 1. | Which one of the following statements is correct? The wavelength of a wave propagating in a waveguide is ? | |
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inversely proportional to the phase velocity
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greater than the free space wavelength
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smaller than the free space wavelength
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directly proportional to the group velocity
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Report Question| 2. | When a particular mode is excited in a waveguide, there appears an extra electric component in the direction of propagation. The resulting mode is ? | |
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longitudinal
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transverse-electric
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transverse-electromagnetic
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transverse-magnetic
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| 3. | When a particular mode is excited in a waveguide, there appears extra electric component, in the direction of propagation. In what mode is the wave propagating ? | |
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Transverse magnetic
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Transverse electric
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Longitudinal
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Transverse electromagnetic
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| 4. | Nature of wave inside rectangular waveguide is ? | |
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non-uniform plane wave
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spherical wave
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uniform plane wave
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cylindrical wave
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| 5. | In a parallel-plate waveguide, what is the principal wave ? | |
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TEM wave
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TE wave
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TM wave
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Combination of TE and TM waves having axial components of both electric and magnetic fields
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| 6. | Which one of the following modes has the highest cut-off wavelength in a rectangular waveguide ? | |
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TE01
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TE10
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TM11
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TM01
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| 7. | The phase velocity of waves propagating in a hollow metal waveguide is ? | |
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less than the velocity of light in free space
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equal to the group velocity
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greater than the velocity of light in free space
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equal to the velocity of light in free space
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| 8. | When a wave travelling in air enters into a guide, the ? | |
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group velocity will increase
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phase velocity will increase
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phase velocity will decrease
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None of these
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| 9. | A rectangular waveguide of internal dimensions (a = 4 cm and b=3 cm) is to be operated in TE,, mode. The minimum operating frequency is ? | |
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3.75 GHz
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5.0 GHz
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6.25 GHz
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6.0 GHz
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| 10. | A rectangular air-filled waveguide has cross section of 4 cm x 10 cm. The minimum frequency which can propagate in the waveguide is ? | |
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2.5 GHz
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1.5 GHz
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3.0 GHz
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2.0 GHz
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