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.
More questions
1. If an amplifier with gain of - 1000 and feedback factor ? = - 0.1 had a gain change of 20% due to temperature, the change in gain of the feedback amplifier would be