66. If the s-plane contour encloses 3 zeros and 2 poles of q(s), the corresponding q(s) plane contour will encircle the origin of q(s) plane :

(a) once in clockwise direction

(b) once in counterclockwise direction

(c) thrice in clockwise direction

(d) twice in counterclockwise direction

67. A polar plot interscets the unit circle at (-1 = j0). The gain margin of the system is :

(a) -1 dB

(b) 0 dB

(c) ∞ dB

(d) 2 dB

68. As the polar plot gets closer to the (-1 + j0) point, the stability of the system is :

(a) improved

(b) reduced

(c) not affected

(d) none of these

**Be a Part of The New & Next**

**Share the Knowledge**