To minimize overall weight and size, miniature PM motors may use high energy magnets made with neodymium or other strategic elements; most such are neodymium-iron-boron alloy. With their higher flux density, electric machines with high-energy PMs are at least competitive with all optimally designed singly-fed synchronous and induction electric machines. Miniature motors resemble the structure in the illustration, except that they have at least three rotor poles (to ensure starting, regardless of rotor position) and their outer housing is a steel tube that magnetically links the exteriors of the curved field magnets.
How do PMs rate against other types of electric motors?
least competitive


Input: Uranium
Natural uranium consists of three major isotopes: uranium-238 (99.28% natural abundance), uranium-235 (0.71%), and uranium-234 (0.0054%). All three are radioactive, emitting alpha particles, with the exception that all three of these isotopes have small probabilities of undergoing spontaneous fission, rather than alpha emission. There are also five other trace isotopes: uranium-239, which is formed when 238U undergoes spontaneous fission, releasing neutrons that are captured by another 238U atom; uranium-237, which is formed when 238U captures a neutron but emits two more, which then decays to neptunium-237; uranium-233, which is formed in the decay chain of that neptunium-237; and finally, uranium-236 and -240, which appear in the decay chain of primordial plutonium-244. It is also expected that thorium-232 should be able to undergo double beta decay, which would produce uranium-232, but this has not yet been observed experimentally.

What is the natural abundance of uranium-235?
Output: 0.71%


Input: Article: The first ground attack came at the Battle of Umm Qasr on 21 March 2003 when a combined force of British, American and Polish forces seized control of the port city of Umm Qasr. Baghdad, Iraq's capital city, fell to American forces in April 2003 and Saddam Hussein's government quickly dissolved. On 1 May 2003, Bush announced that major combat operations in Iraq had ended. However, an insurgency arose against the U.S.-led coalition and the newly developing Iraqi military and post-Saddam government. The insurgency, which included al-Qaeda affiliated groups, led to far more coalition casualties than the invasion. Other elements of the insurgency were led by fugitive members of President Hussein's Ba'ath regime, which included Iraqi nationalists and pan-Arabists. Many insurgency leaders are Islamists and claim to be fighting a religious war to reestablish the Islamic Caliphate of centuries past. Iraq's former president, Saddam Hussein was captured by U.S. forces in December 2003. He was executed in 2006.

Now answer this question: When did the US capture Baghdad?

Output: April 2003


Article: Post-punk was an eclectic genre which resulted in a wide variety of musical innovations and helped merge white and black musical styles. Out of the post-punk milieu came the beginnings of various subsequent genres, including new wave, dance-rock, New Pop, industrial music, synthpop, post-hardcore, neo-psychedelia alternative rock and house music. Bands such as Joy Division, Siouxsie and the Banshees, Bauhaus and the Cure played in a darker, more morose style of post-punk that lead to the development of the gothic rock genre.

Question: Where did systhpop, industrial and neo-psychedelia music derive from?
Ans: Post-punk


Here is a question about this article: The Xeer legal system also requires a certain amount of specialization of different functions within the legal framework. Thus, one can find odayal (judges), xeer boggeyaal (jurists), guurtiyaal (detectives), garxajiyaal (attorneys), murkhaatiyal (witnesses) and waranle (police officers) to enforce the law.
What is the answer to this question: In the Xeer system, what are judges called?
****
So... odayal


Article: The Space Age is a period encompassing the activities related to the Space Race, space exploration, space technology, and the cultural developments influenced by these events. The Space Age began with the development of several technologies that culminated with the launch of Sputnik 1 by the Soviet Union. This was the world's first artificial satellite, orbiting the Earth in 98.1 minutes and weighing in at 83 kg. The launch of Sputnik 1 ushered a new era of political, scientific and technological achievements that became known as the Space Age. The Space Age was characterized by rapid development of new technology in a close race mostly between the United States and the Soviet Union. The Space Age brought the first human spaceflight during the Vostok programme and reached its peak with the Apollo program which captured the imagination of much of the world's population. The landing of Apollo 11 was an event watched by over 500 million people around the world and is widely recognized as one of the defining moments of the 20th century. Since then and with the end of the space race due to the dissolution of the Soviet Union, public attention has largely moved to other areas.

Question: How many people watched the Apollo 11 landing?
Ans:
500 million