Problem: Transistor:

BJTs have three terminals, corresponding to the three layers of semiconductor—an emitter, a base, and a collector. They are useful in amplifiers because the currents at the emitter and collector are controllable by a relatively small base current. In an n–p–n transistor operating in the active region, the emitter–base junction is forward biased (electrons and holes recombine at the junction), and electrons are injected into the base region. Because the base is narrow, most of these electrons will diffuse into the reverse-biased (electrons and holes are formed at, and move away from the junction) base–collector junction and be swept into the collector; perhaps one-hundredth of the electrons will recombine in the base, which is the dominant mechanism in the base current. By controlling the number of electrons that can leave the base, the number of electrons entering the collector can be controlled. Collector current is approximately β (common-emitter current gain) times the base current. It is typically greater than 100 for small-signal transistors but can be smaller in transistors designed for high-power applications.

What is the usual collector current for small-signal transistors?
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A: greater than 100


Problem: Lafayette Park is a revitalized neighborhood on the city's east side, part of the Ludwig Mies van der Rohe residential district. The 78-acre (32 ha) development was originally called the Gratiot Park. Planned by Mies van der Rohe, Ludwig Hilberseimer and Alfred Caldwell it includes a landscaped, 19-acre (7.7 ha) park with no through traffic, in which these and other low-rise apartment buildings are situated. Immigrants have contributed to the city's neighborhood revitalization, especially in southwest Detroit. Southwest Detroit has experienced a thriving economy in recent years, as evidenced by new housing, increased business openings and the recently opened Mexicantown International Welcome Center.
In which part of Detroit is Mexicantown International Welcome Center?
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Answer: Southwest Detroit


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
There are 16 autonomous Indian Institutes of Technology in addition to 30 National Institutes of Technology which are Government Institutions. In addition to these there are many other Universities which offer higher technical courses. The Authority over technical education in India is the AICTE.
How many government-affiliated institutes of technology are there in India?
A: 30


Context and question: Maria Deraismes was initiated into Freemasonry in 1882, then resigned to allow her lodge to rejoin their Grand Lodge. Having failed to achieve acceptance from any masonic governing body, she and Georges Martin started a mixed masonic lodge that actually worked masonic ritual. Annie Besant spread the phenomenon to the English speaking world. Disagreements over ritual led to the formation of exclusively female bodies of Freemasons in England, which spread to other countries. Meanwhile, the French had re-invented Adoption as an all-female lodge in 1901, only to cast it aside again in 1935. The lodges, however, continued to meet, which gave rise, in 1959, to a body of women practising continental Freemasonry.
When was Maria Deraismes assassinated in Freemasonry?
Answer: unanswerable


Question: In 1995, Sony and Michael Jackson formed a joint venture which merged Sony's music publishing operations with Jackson's ATV Music to form Sony/ATV Music Publishing.
Is there an answer to this question: Jackson's TAV Music merged with whom?

Answer: unanswerable


QUES: Cyprus has one of the warmest climates in the Mediterranean part of the European Union.[citation needed] The average annual temperature on the coast is around 24 °C (75 °F) during the day and 14 °C (57 °F) at night. Generally, summers last about eight months, beginning in April with average temperatures of 21–23 °C (70–73 °F) during the day and 11–13 °C (52–55 °F) at night, and ending in November with average temperatures of 22–23 °C (72–73 °F) during the day and 12–14 °C (54–57 °F) at night, although in the remaining four months temperatures sometimes exceed 20 °C (68 °F).

What month typically marks the end of summer on Cyprus?
What is the answer?
ANS:
November