QUES: A major turning point in the development of DC machines took place in 1864, when Antonio Pacinotti described for the first time the ring armature with its symmetrically grouped coils closed upon themselves and connected to the bars of a commutator, the brushes of which delivered practically non-fluctuating current. The first commercially successful DC motors followed the invention by Zenobe Gramme who, in 1871, reinvented Pacinotti's design. In 1873, Gramme showed that his dynamo could be used as a motor, which he demonstrated to great effect at exhibitions in Vienna and Philadelphia by connecting two such DC motors at a distance of up to 2 km away from each other, one as a generator. (See also 1873 : l'experience decisive [Decisive Workaround] .)

What made Pacinotti's motor an important advancement?
What is the answer?
ANS: non-fluctuating current
QUES: Himachal Pradesh is spread across valleys, and 90% of the population lives in villages and towns. However, the state has achieved 100% hygiene and practically no single house is without a toilet. The villages are well connected to roads, public health centers, and now with Lokmitra kendra using high-speed broadband. Shimla district has maximum urban population of 25%. According to a 2005 Transparency International survey, Himachal Pradesh is ranked the second-least corrupt state in the country after Kerala. The hill stations of the state are among the most visited places in the country. The government has successfully imposed environmental protection and tourism development, meeting European standards, and it is the only state which forbids the use of polyethylene and tobacco products.[citation needed]

What is Himachal Pradesh rank according to the 2005 Transparency international survey?
What is the answer?
ANS: second-least corrupt state in the country after Kerala
QUES: iPods have won several awards ranging from engineering excellence,[not in citation given] to most innovative audio product, to fourth best computer product of 2006. iPods often receive favorable reviews; scoring on looks, clean design, and ease of use. PC World says that iPod line has "altered the landscape for portable audio players". Several industries are modifying their products to work better with both the iPod line and the AAC audio format. Examples include CD copy-protection schemes, and mobile phones, such as phones from Sony Ericsson and Nokia, which play AAC files rather than WMA.

Which PC magazine praised the iPod for having "altered the landscape for portable audio players"?
What is the answer?
ANS:
PC World