When subjected to alternating stresses, an insulating material is characterised by complex dielectric constant ?'r - j?"r . In such materials, the dielectric losses under alternating stress is proportional
Options
A. ?"r
B. both ?'r and ?"r
C. ?'r
D. (?"r)2
Correct Answer
?"r
Explanation
The imaginary part of ?r gives rise to absorption of energy.
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Correct Answer: phasor sum of fields produced by individual antennas of the array
Explanation:
Since field is a phasor quantity we have to take phasor sum.
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