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Automatic Control Systems
When a unit step voltage drives a lag network the output
remains constant at unit step value
increases exponentially from zero to final value
decreases exponentially from 1 to 0
either (b) of (c) depending on values of R and C
Correct Answer:
increases exponentially from zero to final value
Explanation:
At
t
= 0 the capacitor behaves as a short-circuit and output voltage is 0. At
t
= ∞ capacitor behaves as an open-circuit and V
0
= V
i
.
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