[amp_mcq option1=”both D.C. and A.C.” option2=”D.” option3=”and A.C. B.” option4=”any of the above” correct=”option1″]<\/p>\n
The correct answer is: A. both D.C. and A.C.<\/p>\n
A dynamometer wattmeter is a type of wattmeter that can be used to measure both direct current (DC) and alternating current (AC) power. It consists of two coils, a fixed field coil and a movable armature coil. The fixed field coil is connected to a voltage source, and the movable armature coil is connected to a current source. When current flows through the armature coil, it creates a magnetic field that interacts with the magnetic field of the fixed field coil. This interaction produces a torque that causes the armature coil to rotate. The amount of rotation is proportional to the power being measured.<\/p>\n
Dynamometer wattmeters are accurate and reliable, and they can be used to measure a wide range of power levels. They are commonly used in industrial and commercial applications.<\/p>\n
Option B is incorrect because dynamometer wattmeters can be used to measure AC power. Option C is incorrect because dynamometer wattmeters can be used to measure DC power. Option D is incorrect because dynamometer wattmeters are not suitable for measuring all types of power.<\/p>\n","protected":false},"excerpt":{"rendered":"
[amp_mcq option1=”both D.C. and A.C.” option2=”D.” option3=”and A.C. B.” option4=”any of the above” 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":[741],"tags":[],"class_list":["post-58217","post","type-post","status-publish","format-standard","hentry","category-electrical-machine-design","no-featured-image-padding"],"yoast_head":"\n