[amp_mcq option1=”primary is supplied rated voltage” option2=”primary is supplied full-load current” option3=”primary is supplied current at reduced voltage” option4=”primary is supplied rated kVA” correct=”option1″]<\/p>\n
The correct answer is: A. primary is supplied rated voltage.<\/p>\n
During an open circuit test, the transformer’s primary winding is connected to a rated voltage source, while the secondary winding is left open circuit. This causes a current to flow in the primary winding, which in turn creates a magnetic field. This magnetic field induces a voltage in the secondary winding, which can be measured. The open circuit test is used to determine the transformer’s magnetization current and its open circuit voltage.<\/p>\n
Option B is incorrect because the primary is not supplied full-load current. The primary is only supplied a small amount of current, which is just enough to create the magnetic field necessary to induce a voltage in the secondary winding.<\/p>\n
Option C is incorrect because the primary is not supplied current at reduced voltage. The primary is supplied rated voltage, which is the voltage that the transformer is designed to operate at.<\/p>\n
Option D is incorrect because the primary is not supplied rated kVA. The kVA rating of a transformer is the product of its rated voltage and rated current. The open circuit test does not measure the transformer’s kVA rating.<\/p>\n","protected":false},"excerpt":{"rendered":"
[amp_mcq option1=”primary is supplied rated voltage” option2=”primary is supplied full-load current” option3=”primary is supplied current at reduced voltage” option4=”primary is supplied rated kVA” 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":[960],"tags":[],"class_list":["post-46376","post","type-post","status-publish","format-standard","hentry","category-transformers","no-featured-image-padding"],"yoast_head":"\n