Problem: Please answer a question about the following article about Transistor:
Providing sufficient base drive current is a key problem in the use of bipolar transistors as switches. The transistor provides current gain, allowing a relatively large current in the collector to be switched by a much smaller current into the base terminal. The ratio of these currents varies depending on the type of transistor, and even for a particular type, varies depending on the collector current. In the example light-switch circuit shown, the resistor is chosen to provide enough base current to ensure the transistor will be saturated.
What is a major problem with using bipolar transistors as switches?
A: Providing sufficient base drive current
Problem: Please answer a question about the following article about Federal Bureau of Investigation:
In 2000, the FBI began the Trilogy project to upgrade its outdated information technology (IT) infrastructure. This project, originally scheduled to take three years and cost around $380 million, ended up going far over budget and behind schedule. Efforts to deploy modern computers and networking equipment were generally successful, but attempts to develop new investigation software, outsourced to Science Applications International Corporation (SAIC), were not. Virtual Case File, or VCF, as the software was known, was plagued by poorly defined goals, and repeated changes in management. In January 2005, more than two years after the software was originally planned for completion, the FBI officially abandoned the project. At least $100 million (and much more by some estimates) was spent on the project, which never became operational. The FBI has been forced to continue using its decade-old Automated Case Support system, which IT experts consider woefully inadequate. In March 2005, the FBI announced it was beginning a new, more ambitious software project, code-named Sentinel, which they expected to complete by 2009.
When did the FBI begin the Trilogy project?
A: 2000
Problem: Please answer a question about the following article about Egypt:
The new government drafted and implemented a constitution in 1923 based on a parliamentary system. Saad Zaghlul was popularly elected as Prime Minister of Egypt in 1924. In 1936, the Anglo-Egyptian Treaty was concluded. Continued instability due to remaining British influence and increasing political involvement by the king led to the dissolution of the parliament in a military coup d'etat known as the 1952 Revolution. The Free Officers Movement forced King Farouk to abdicate in support of his son Fuad. British military presence in Egypt lasted until 1954.
What system of government was constitution based on?
A: parliamentary system
Problem: Please answer a question about the following article about Detroit:
Detroit has struggled with high crime for decades. Detroit held the title of murder capital between 1985-1987 with a murder rate around 58 per 100,000. Crime has since decreased and, in 2014, the murder rate was 43.4 per 100,000, lower than in St. Louis, Missouri. Although the murder rate increased by 6% during the first half of 2015, it was surpassed by St Louis and Baltimore which saw much greater spikes in violence. At year-end 2015, Detroit had 295 criminal homicides, down slightly from 299 in 2014.
How many murders did Detroit have in 2014?
A:
299