1. radio waves travel faster at night
2. ground wave attenuation is low at night
3. the sky wave is stronger at night
4. there is no fading at night
the sky wave is stronger at night
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1. Is always less than 1
2. is always greater than1
3. may be less than or more than 1 depending on the distance between the two stations
4. does not depend on the distance between the two stations
is always greater than1
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1. Linearly polarized
2. right circularly polarized
3. left circularly polarized
4. lliptically polarized
left circularly polarized
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1. the radiation intensity is maximum along the normal to the dipole axis
2. the current distribution along its length is uniform irrespective of the length
3. the effective length equals its physical length
4. the input impedance is independent of the location of the feed-point
the radiation intensity is maximum along the normal to the dipole axis
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1. Link currents from an independent set
2. Branch voltage from an independent set
3. Link currents from an independent set
4. Branch voltage from an independent set
Branch voltage from an independent set
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1. Z11=Z22
2. y21=y12
3. h21=-h12
4. AD-BC=0
h21=-h12
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1. Equal to the resonance frequency
2. Less than the resonance frequency
3. Greater than resonance frequency
4. Not zero
Not zero
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1.
2.
3.
4.
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1. N1 and N1
2. N2 and N4
3. N1 and N3.
4. N1and N4
N1 and N3.
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1. The system is completely controllable
2. The system is not completely controllable
3. The system is completely observable
4. The system is not completely observable
The system is completely observable
No Explanation available for this question