If the reactor is critical, then inserting the control rods makes the reactor subcritical and power will decrease. If the control rods are withdrawn, the reactor becomes supercritical and power increases. We employ small movements to ensure that power changes at a controlled rate. If necessary, when the control rods are fully inserted or perhaps 80-90 percent inserted, the reactor shuts down.
In brief, ârhetoricâ is any communication used to modify the perspectives of others. But this is a very broad definition that calls for more explanation. The OWLâs âIntroduction to Rhetoricâ vidcast explains more what rhetoric is and how rhetoric relates to writing.
Rhetoric (pronounced /ËrÉtÉrÉªk/) is the art of discourse, an art that aims to improve the capability of writers or speakers to inform, persuade, or motivate particular audiences in specific situations. Kenneth Burke was a rhetorical theorist, philosopher, and poet. 2  Many of his works are central to modern rhetorical theory: A Rhetoric of Motives (1950), A Grammar of Motives (1945), Language as Symbolic Action (1966), and Counterstatement (1931).