Grey rods can be inserted in the core for most of the cycle to control the radial power distribution in the core, or they may reside out of the core and only inserted and withdrawn to make quick small changes to the power level. The Russians have used Dy in the form of Dysprosium titanate as a control rod material.
A rhetorical question is a device used to persuade or subtly influence the audience. It's a question asked not for the answer, but for the effect. Oftentimes, a rhetorical question is used to emphasize a point or just to get the audience thinking. Sometimes, a rhetorical question is asked with the asker already knowing the answer, such as the weather example.
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.ne such method is criticism. When those using criticism analyze instances of rhetoric what they do is called rhetorical criticism (see section below). According to rhetorical critic Jim A. Kuypers, âThe use of rhetoric is an art; as such, it does not lend itself well to scientific methods of analysis.