QUES: Electrolytic capacitors use an aluminum or tantalum plate with an oxide dielectric layer. The second electrode is a liquid electrolyte, connected to the circuit by another foil plate. Electrolytic capacitors offer very high capacitance but suffer from poor tolerances, high instability, gradual loss of capacitance especially when subjected to heat, and high leakage current. Poor quality capacitors may leak electrolyte, which is harmful to printed circuit boards. The conductivity of the electrolyte drops at low temperatures, which increases equivalent series resistance. While widely used for power-supply conditioning, poor high-frequency characteristics make them unsuitable for many applications. Electrolytic capacitors will self-degrade if unused for a period (around a year), and when full power is applied may short circuit, permanently damaging the capacitor and usually blowing a fuse or causing failure of rectifier diodes (for instance, in older equipment, arcing in rectifier tubes). They can be restored before use (and damage) by gradually applying the operating voltage, often done on antique vacuum tube equipment over a period of 30 minutes by using a variable transformer to supply AC power. Unfortunately, the use of this technique may be less satisfactory for some solid state equipment, which may be damaged by operation below its normal power range, requiring that the power supply first be isolated from the consuming circuits. Such remedies may not be applicable to modern high-frequency power supplies as these produce full output voltage even with reduced input.
What is one type of metal which the conducting plates in electrolytic capacitors are never made of?

ANS: unanswerable

QUES: YouTube offered the public a beta test of the site in May 2005. The first video to reach one million views was a Nike advertisement featuring Ronaldinho in September 2005. Following a $3.5 million investment from Sequoia Capital in November, the site launched officially on December 15, 2005, by which time the site was receiving 8 million views a day. The site grew rapidly, and in July 2006 the company announced that more than 65,000 new videos were being uploaded every day, and that the site was receiving 100 million video views per day. According to data published by market research company comScore, YouTube is the dominant provider of online video in the United States, with a market share of around 43% and more than 14 billion views of videos in May 2010.
What ad first aired in August 2005?

ANS: unanswerable

QUES: Lee's childhood friend, author Truman Capote, wrote on the dust jacket of the first edition, "Someone rare has written this very fine first novel: a writer with the liveliest sense of life, and the warmest, most authentic sense of humor. A touching book; and so funny, so likeable." This comment has been construed to suggest that Capote wrote the book or edited it heavily. In 2003, a Tuscaloosa newspaper quoted Capote's biological father, Archulus Persons, as claiming that Capote had written "almost all" of the book. In 2006, a Capote letter was donated to Monroeville's literary heritage museum; in a letter to a neighbor in Monroeville in 1959, Capote mentioned that Lee was writing a book that was to be published soon. Extensive notes between Lee and her editor at Lippincott also refute the rumor of Capote's authorship. Lee's older sister, Alice, responded to the rumor, saying: "That's the biggest lie ever told."
Who was speculated to have wrote the book instead of Harper Lee?

ANS: Truman Capote

QUES: Matrix groups consist of matrices together with matrix multiplication. The general linear group GL(n, R) consists of all invertible n-by-n matrices with real entries. Its subgroups are referred to as matrix groups or linear groups. The dihedral group example mentioned above can be viewed as a (very small) matrix group. Another important matrix group is the special orthogonal group SO(n). It describes all possible rotations in n dimensions. Via Euler angles, rotation matrices are used in computer graphics.
What groups combine matrices with matrix multiplication?

ANS:
Matrix groups