The maximum number of conductors is based on the same size conductors in a box containing no fittings or devices, such as fixture studs, cable clamps, hickeys, switches, or receptacles. Fewer conductors are allowed in boxes that contain fittings or devices.
How many conductors does a box have?There are 18 cubic inches in a typical single-gang box. This is equivalent to holding 9 #14 gauge wires, 8 #12 gauge wires, or 7 #10 gauge wires. For boxes that simply contain wires, these numbers apply. Subtract two wires for each additional device you include in the calculation. The maximum number of conductors is based on identical-sized conductors in a box devoid of fittings or gadgets like fixture studs, cable clamps, hickeys, switches, or outlets. In boxes containing fittings or devices, fewer conductors are permitted.The number of wires represented by each component in an electrical box varies. Every cable clamp, every uninsulated wire, every support for the light or other fixture, and every wire that is insulated together constitute one wire. There are two wires for every switch, outlet, and other device.To learn more about conductors refer to:
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What is the approximate value of the voltage drop across each of the following when their contacts are open? (1) Pressure switch (2) Temperature switch (3) Manual pushbutton
The approximate value of the voltage drop across each of the following when their contacts are open are as follows:
The voltage drop across the Pressure Switch = 120V.The Voltage drop across Temperature Switch = 120V.The voltage drop across Manual Pushbutton= 120V.What is Voltage drop?Voltage drop may be defined as the process of decrease of electric potential along the path of a current flowing in a circuit. It normally occurs when a current passes through the cable.
It is related to the resistance or impedance to current flow with passive elements in the circuits including cables, contacts, and connectors affecting the level of voltage drop.
It generally specifies how the supplied energy from a voltage source is reduced as electric current flows through the elements that do not supply voltage.
Therefore, the approximate value of the voltage drop across each of the following when their contacts are well described above.
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What are the 3 main types of CPU?
Answer:
The three logical units that make up the central processing unit are the arithmetic and logic unit (ALU), main storage, and the control unit.
Explanation:
ALU, primary storage, and control unit are the three logical components that make up the central processing unit (CPU).
What is CPU?The part of a computer system in charge of command interpretation and execution. A PC's central processing unit (CPU) consists of a single microprocessor, whereas a mainframe's CPU, which is more powerful, is made up of many processing units—in some cases, hundreds of them.A central processing unit, sometimes known as a CPU, is a piece of electronic machinery that carries out instructions from software, allowing a computer or other device to do its tasks.The central processing unit (CPU), which houses all the hardware required to process input, store data, and output results, is the brain of a computer. Computer programs that direct the CPU on which data to process and how to process it are continuously being run by the CPU.To learn more about CPU refer to:
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reciprocating engine exhaust system designs commonly used to provide for ease of installation and/or allow for expansion and contraction, may include the use of
Bellows, flex pipes, exhaust hangers, and clamps, among other flexible parts, are used to facilitate installation and/or permit expansion and contraction of the exhaust system in response to temperature variations.
1. Slip joints: Slip joints provide a secure connection between the exhaust system's components while allowing the exhaust system to flex and move slightly.
2. Bellows: Bellows are adaptable, accordion-like parts that enable the exhaust system to expand and compress in response to temperature variations.
3. Exhaust hangers: Exhaust hangers are made to absorb vibration and support the exhaust system. They come in a variety of shapes and sizes to match the exhaust system and offer the required support.
4. Flex pipes: Flex pipes join two stiff exhaust components by allowing flexibility. They are made to absorb vibration, lessen noise, and permit exhaust system expansion and contraction.
5. Clamps: Exhaust connections are made using clamps.
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14.What is the relative volatility of benzene to pentane at 1000F and 465 psia?a) 15.2b) 0.75c) 3.2d) 0.30
0.30 s the relative volatility of benzene to pentane at 1000F and 465 psia.
What is relative volatility
Volatility is a measure of the degree of price variation of a security or other asset over time. It is typically measured by calculating the standard deviation of the historical returns of a security or other asset. Generally, the higher the volatility, the riskier the security. The volatility of benzene is relatively low, as its price has remained relatively stable over time. Relative volatility is the comparison of the volatility of two different assets or securities. It is calculated by dividing the volatility of one asset by the volatility of another asset.
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Which component is present on a gas water heater but NOT on an electric one? A. a power cable. B. a dip tube. C. a draft hood. D. anode rod.
C. A draft hood is present on a gas water heater but NOT on an electric one.
A draft hood is a component that is present on a gas water heater but not on an electric one. A draft hood is a metal hood that is attached to the top of the water heater and helps to vent harmful combustion gases to the outside. In a gas water heater, the draft hood helps to ensure that proper air flow is maintained, so that the heater operates safely and efficiently.
An anode rod is a component that is present on both gas and electric water heaters. An anode rod is a metal rod that is installed inside the tank of the water heater to help protect the tank from corrosion.
A dip tube is a component that is present on both gas and electric water heaters. A dip tube is a plastic pipe that is installed inside the tank of the water heater and directs incoming cold water to the bottom of the tank, where it can be heated.
A power cable is a component that is present on an electric water heater but not on a gas water heater. An electric water heater requires a power cable to supply electricity to the heating elements inside the tank.
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What is the key to preventing accidents in a welding shop?
Proper training, protective clothing, and safety protocols are essential for preventing accidents in a welding shop.
The key to preventing accidents in a welding shop is to ensure that all workers are properly trained and that appropriate protective equipment and safety protocols are followed. This includes wearing the proper protective clothing, such as fire-resistant clothing, safety glasses, and face shields, as well as ensuring that all welding work areas are properly ventilated. Additionally, there should be clearly marked emergency exits and fire extinguishers in the welding shop, and all employees should be trained in how to use them in case of an emergency.
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Given an RSA signature scheme with the public key (n = 9797,e = 131),
which of the following signatures are valid?
1. (x = 123, sig(x) = 6292)
2. (x = 4333, sig(x) = 4768)
3. (x = 4333, sig(x) = 1424)
(a) 5.432 g : 4 significant figures
(b) 40.319 g: 5 significant figures
(c) 146 cm: 3 significant figures
The significant figures are the digits that are certain plus one digit that is uncertain.
In a measure, all the non-zero digits and the zeros between two non-zero digits are significant (take this as the first rule).
That rule apply for the items (a) through (d).
With that rule, then, you get the answer for the first four questions.
(a) 5.432 g: all the digits are different from zero, so all 4 are significant.
(b) 40.319 g: all digits are non-zero, so all 5 are significant.
(c) 146 cm: all digits are non-zero, so all 3 are significant.
(d) 3.285 cm: all digits are non-zero, so all 4 are significant.
In a decimal number, the leading zeros before the first non-zero digit are not significant (second rule)
(e) 0.189 s: 3 significant figures
So, with the second rule, you have that the 0 before the perios is not significant, and with the first rule you get that the 3 decimal (which are non-zeros) are significant.
(f) 429.3 mm: 4 significant figures
For this number use the first rule: all the digits are non-zero, so the 4 digits are significant.
(g) 2873.0: 5 significant figures
Now our third rule: all the trailing zeros to the right of the decimal point are significant.
That means that the digit 0 after the decimal point is significant. Since the other 4 digits are non-zero, the first rule may you conclude that they are also significant. So, the 5 digits are significant.
(h) 990 ml: 2 significant figures
New (fourth rule): the zeros that are only place holders are not significant.
So, the last 0 in 990 is not significant, and only the two non-zero digits (99) are significant figures.
(i) 0.0000246 g: 3 significant figures
With this number use the second rule (the leading zeros before the first non-zero digit are not significant), so the three non-zero digits are the signiticant figures.
(j) 1.04 × 10¹² g: 3 significant figures
This number is written in scientific notation. Only the digits of the mantissa (the digits before the power of 10) are taken into account to determine the number of significant figures.
So, use the previous rules with the number 1.04: first rule, all the non-zero digits and the zeros between two non-zero digits are significant. So the 3 digits in 1.04 are significant.
(k) 5.59 x 10⁻⁷ m: 3 significant figures
This number is also written in scientific notation, so only use the mantissa.
As per the first rule, all non-zero digits are signficant, so this number has 3 significant figures.
(l) 0.0000242 mg: 3 significant figures
The four zeros before 242 are just place holders, so as per the fourth rule, they are not signficant, and this number has 3 significant numbers (the three non-zero digits).
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create (instantiate) an object to represent a city’s annual weather data for one year
We will be creating a weather application for this project. The temperature of a location will be displayed via this application. We'll need an API to get weather information.
The challenge we'll work on is estimating the maximum temperature for tomorrow in our city based on one year of meteorological data. I'm using Seattle, WA, but you may use the NOAA Climate Data Online tool to obtain data for your local city. We'll pretend we don't have access to weather forecasts (after all, it's more fun to generate our own predictions than rely on others). We do have one year's worth of historical maximum temperatures, temps for the preceding two days, and an estimate from a buddy who claims to know everything about the weather. Furthermore, because the target value is continuous, this is a regression problem (as opposed to discrete classes in classification). That's all the background we need, so let's get started!
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