Problem: Please answer a question about the following article about Light-emitting diode:
An LED filament consists of multiple LED dice connected in series on a common longitudinal substrate that form a thin rod reminiscent of a traditional incandescent filament. These are being used as a low cost decorative alternative for traditional light bulbs that are being phased out in many countries. The filaments require a rather high voltage to light to nominal brightness, allowing them to work efficiently and simply with mains voltages. Often a simple rectifier and capacitive current limiting are employed to create a low-cost replacement for a traditional light bulb without the complexity of creating a low voltage, high current converter which is required by single die LEDs. Usually they are packaged in a sealed enclosure with a shape similar to lamps they were designed to replace (e.g. a bulb), and filled with inert nitrogen or carbon dioxide gas to remove heat efficiently.
What does an LED filament consist of?
A: multiple LED dice
Problem: Please answer a question about the following article about Macintosh:
The Macintosh SE was released at the same time as the Macintosh II for $2900 (or $3900 with hard drive), as the first compact Mac with a 20 MB internal hard drive and an expansion slot. The SE's expansion slot was located inside the case along with the CRT, potentially exposing an upgrader to high voltage. For this reason, Apple recommended users bring their SE to an authorized Apple dealer to have upgrades performed. The SE also updated Jerry Manock and Terry Oyama's original design and shared the Macintosh II's Snow White design language, as well as the new Apple Desktop Bus (ADB) mouse and keyboard that had first appeared on the Apple IIGS some months earlier.
What did the location of the SE's expansion slot potentially expose an upgrader to?
A: high voltage
Problem: Please answer a question about the following article about Antenna (radio):
Although a resonant antenna has a purely resistive feed-point impedance at a particular frequency, many (if not most) applications require using an antenna over a range of frequencies. An antenna's bandwidth specifies the range of frequencies over which its performance does not suffer due to a poor impedance match. Also in the case of a Yagi-Uda array, the use of the antenna very far away from its design frequency reduces the antenna's directivity, thus reducing the usable bandwidth regardless of impedance matching.
What is lessened by the Yagi-Uda design?
A: directivity
Problem: Please answer a question about the following article about Party leaders of the United States House of Representatives:
"We used a technique of laying our program out in general debate," he said. When we got to the amendment phase, we would offer our program as a substitute for the Johnson proposal. If we lost in the Committee of the Whole, then we would usually offer it as a motion to recommit and get a vote on that. And if we lost on the motion to recommit, our Republican members had a choice: They could vote against the Johnson program and say we did our best to come up with a better alternative. Or they could vote for it and make the same argument. Usually we lost; but when you're only 140 out of 435, you don't expect to win many.
If minority party loses committ of the whole, then what motion may be filed?
A:
motion to recommit and get a vote on that