[amp_mcq option1=”The system is relatively stable” option2=”The system is highly stable” option3=”The system is highly oscillatory” option4=”None of the above” correct=”option4″]<\/p>\n
The correct answer is: D. None of the above<\/strong><\/p>\n A system with gain margin close to unity or a phase margin close to zero is marginally stable<\/strong>. This means that the system is on the verge of instability. A small change in the system’s parameters could cause the system to become unstable.<\/p>\n A system is said to be stable if, after a disturbance, it returns to its original state. A system is said to be unstable if, after a disturbance, it does not return to its original state, but instead continues to oscillate or diverge.<\/p>\n The gain margin is a measure of how much the gain of a system can be increased before the system becomes unstable. The phase margin is a measure of how much the phase of a system can be increased before the system becomes unstable.<\/p>\n A system with gain margin close to unity or a phase margin close to zero has very little margin for error. A small change in the system’s parameters could cause the system to become unstable.<\/p>\n","protected":false},"excerpt":{"rendered":" [amp_mcq option1=”The system is relatively stable” option2=”The system is highly stable” option3=”The system is highly oscillatory” option4=”None of the above” correct=”option4″]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[961],"tags":[],"class_list":["post-56434","post","type-post","status-publish","format-standard","hentry","category-electrical-control-systems","no-featured-image-padding"],"yoast_head":"\n