Input: Read this: Unpopulated boards are usually bare-board tested for "shorts" and "opens". A short is a connection between two points that should not be connected. An open is a missing connection between points that should be connected. For high-volume production a fixture or a rigid needle adapter is used to make contact with copper lands on the board. Building the adapter is a significant fixed cost and is only economical for high-volume or high-value production. For small or medium volume production flying probe testers are used where test probes are moved over the board by an XY drive to make contact with the copper lands. The CAM system instructs the electrical tester to apply a voltage to each contact point as required and to check that this voltage appears on the appropriate contact points and only on these.
Question: What's an absent connection that needs to be linked up on an unpopulated board called?

Output: An open


QUES: Traditional games are played in pubs, ranging from the well-known darts, skittles, dominoes, cards and bar billiards, to the more obscure Aunt Sally, Nine Men's Morris and ringing the bull. In the UK betting is legally limited to certain games such as cribbage or dominoes, played for small stakes. In recent decades the game of pool (both the British and American versions) has increased in popularity as well as other table based games such as snooker or Table Football becoming common.

Along with darts, skittles, dominoes and bar billiards, what is a well-known pub game?
What is the answer?
ANS: cards


QUES: After the death of the replacement bishop Gregory in 345, Constans used his influence to allow Athanasius to return to Alexandria in October 345, amidst the enthusiastic demonstrations of the populace. This began a "golden decade" of peace and prosperity, during which time Athanasius assembled several documents relating to his exiles and returns from exile in the Apology Against the Arians. However, upon Constans's death in 350, another civil war broke out, which left pro-Arian Constantius as sole emperor. An Alexandria local council in 350 replaced (or reaffirmed) Athanasius in his see.
When did the uncivil war happen?

ANS: unanswerable


Since the 1990s food has become a more important part of a pub's trade, and today most pubs serve lunches and dinners at the table in addition to (or instead of) snacks consumed at the bar. They may have a separate dining room. Some pubs serve meals to a higher standard, to match good restaurant standards; these are sometimes termed gastropubs.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is a term for pubs that serve restaurant-quality food?
Ah, so.. gastropubs


Question: Windows 8 also incorporates improved support for mobile broadband; the operating system can now detect the insertion of a SIM card and automatically configure connection settings (including APNs and carrier branding), and reduce its internet usage in order to conserve bandwidth on metered networks. Windows 8 also adds an integrated airplane mode setting to globally disable all wireless connectivity as well. Carriers can also offer account management systems through Windows Store apps, which can be automatically installed as a part of the connection process and offer usage statistics on their respective tile.
Try to answer this question if possible: What doesn't airplane mode do?
Answer: unanswerable


Question: 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.
Try to answer this question if possible:  How doesn't a stepper motor differ from a synchronous motor?
Answer:
unanswerable