[amp_mcq option1=”Neutralizing residual magnetism” option2=”Creating residual magnetism by a D.” option3=”generator means A. Neutralizing residual magnetism B. Creating residual magnetism by a” option4=”Increasing flux density by adding extra turns of windings on poles” correct=”option1″]<\/p>\n
The correct answer is A. Neutralizing residual magnetism.<\/p>\n
Flashing the field of a DC generator means applying a reverse DC voltage to the field windings for a short period of time. This reverse voltage causes the current in the field windings to flow in the opposite direction, which neutralizes the residual magnetism in the generator.<\/p>\n
Residual magnetism is the magnetism that remains in the poles of a DC generator after it has been turned off. This residual magnetism can cause problems when the generator is turned on again, as it can cause the generator to produce a higher voltage than it is supposed to. Flashing the field neutralizes the residual magnetism, so that the generator produces the correct voltage when it is turned on.<\/p>\n
Option B is incorrect because it is the opposite of what flashing the field does. Flashing the field neutralizes residual magnetism, not creates it.<\/p>\n
Option C is incorrect because it is not related to the field of a DC generator. The magnetic losses of forces are a property of the magnetic circuit of a generator, and they are not affected by flashing the field.<\/p>\n
Option D is incorrect because it is not the purpose of flashing the field. Flashing the field does not increase the flux density by adding extra turns of windings on poles.<\/p>\n","protected":false},"excerpt":{"rendered":"
[amp_mcq option1=”Neutralizing residual magnetism” option2=”Creating residual magnetism by a D.” option3=”generator means A. Neutralizing residual magnetism B. Creating residual magnetism by a” option4=”Increasing flux density by adding extra turns of windings on poles” 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":[742],"tags":[],"class_list":["post-54830","post","type-post","status-publish","format-standard","hentry","category-d-c-generators","no-featured-image-padding"],"yoast_head":"\n