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 If the control rods are withdrawn, the reactor becomes supercritical and power increases.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.
Rhetorical modes (also known as modes of discourse) describe the variety, conventions, and purposes of the major kinds of language-based communication, particularly writing and speaking. Four of the most common rhetorical modes and their purpose are narration, description, exposition, and argumentation.xpository writing is a type of writing where the purpose is to explain, inform, or even describe. It is considered to be one of the four most common rhetorical modes. The purpose of expository writing is to explain and analyze information by presenting an idea, relevant evidence, and appropriate discussion.