[amp_mcq option1=”feedback” option2=”stimulus” option3=”signal” option4=”gain control” correct=”option1″]<\/p>\n
The correct answer is: A. feedback<\/strong><\/p>\n Feedback is any externally introduced signal affecting the controlled output. It is used to control the output of a system by comparing it to a reference signal and adjusting the input accordingly.<\/p>\n Stimulus is a change in the environment that causes a response from an organism. It can be physical, chemical, or biological.<\/p>\n Signal is a physical quantity, such as voltage or current, that carries information. It can be analog or digital.<\/p>\n Gain control is a mechanism that adjusts the gain of an amplifier. It is used to control the amplitude of the output signal.<\/p>\n In the context of the question, feedback is the most appropriate answer because it is the only option that refers to a signal that affects the controlled output. The other options refer to signals that affect the input or the system itself, but not the controlled output.<\/p>\n","protected":false},"excerpt":{"rendered":" [amp_mcq option1=”feedback” option2=”stimulus” option3=”signal” option4=”gain control” correct=”option1″]<\/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-57091","post","type-post","status-publish","format-standard","hentry","category-electrical-control-systems","no-featured-image-padding"],"yoast_head":"\n