Problem: Electric motor:

Stepper motors are a type of motor frequently used when precise rotations are required. In a stepper motor an internal rotor containing PMs or a magnetically soft rotor with salient poles is controlled by a set of external magnets that are switched electronically. A stepper motor may also be thought of as a cross between a DC electric motor and a rotary solenoid. As each coil is energized in turn, the rotor aligns itself with the magnetic field produced by the energized field winding. Unlike a synchronous motor, in its application, the stepper motor may not rotate continuously; instead, it "steps"—starts and then quickly stops again—from one position to the next as field windings are energized and de-energized in sequence. Depending on the sequence, the rotor may turn forwards or backwards, and it may change direction, stop, speed up or slow down arbitrarily at any time.

 How doesn't a stepper motor differ from a synchronous motor?
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A: unanswerable


Problem: Law of the United States:

The law of the United States comprises many levels of codified and uncodified forms of law, of which the most important is the United States Constitution, the foundation of the federal government of the United States. The Constitution sets out the boundaries of federal law, which consists of acts of Congress, treaties ratified by the Senate, regulations promulgated by the executive branch, and case law originating from the federal judiciary. The United States Code is the official compilation and codification of general and permanent federal statutory law.

What is defined as the official codification of federal statutory law?
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A: The United States Code


Problem: Pub:

The Bingley Arms, Bardsey, Yorkshire, is claimed to date to 905 AD. Ye Olde Salutation Inn in Nottingham dates from 1240, although the building served as a tannery and a private residence before becoming an inn sometime before the English Civil War. The Adam and Eve in Norwich was first recorded in 1249, when it was an alehouse for the workers constructing nearby Norwich Cathedral. Ye Olde Man & Scythe in Bolton, Lancashire, is mentioned by name in a charter of 1251, but the current building is dated 1631. Its cellars are the only surviving part of the older structure.

In what county is the Bingley Arms located?
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A: Yorkshire


Problem: Green:

Roman Catholic and more traditional Protestant clergy wear green vestments at liturgical celebrations during Ordinary Time. In the Eastern Catholic Church, green is the color of Pentecost. Green is one of the Christmas colors as well, possibly dating back to pre-Christian times, when evergreens were worshiped for their ability to maintain their color through the winter season. Romans used green holly and evergreen as decorations for their winter solstice celebration called Saturnalia, which eventually evolved into a Christmas celebration. In Ireland and Scotland especially, green is used to represent Catholics, while orange is used to represent Protestantism. This is shown on the national flag of Ireland.

What does the Eastern Catholic Church use orange to represent?
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A:
unanswerable