# Compensation Techniques – 1 – 2

6. The phase lead compensation is used to :

(a) increase rise time and decrease overshoot
(b) decrease both rise time and overshoot
(c) increase both rise time and overshoot
(d) decrease rise time and increase overshoot

Explanation
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7. The maximum phase shift that can be provided by a lead compensator with transfer function,

$\dpi{100} G (s) = 1+ 6s/1+ 2s :$

(a) 15°
(b) 30°
(c) 45°
(d) 60°

Explanation
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8. The compensator required to improve the steady-state response of a system is :

(a) lag
(d) none of these

Explanation
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9. Damping ratio ξ and peak overshoot Mp are measure of :

(a) relative stability
(b) absolute stability
(c) speed of response

Explanation
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10. Bandwidth is increased when the compensator used is :

(a) lag
(d) none of these