- Win keyfinder is a Small Freeware Utility that helps find Windows Product/CD Key that was used during Windows Installation from system Registry, it can retrieve lost product key from MS Windows 8, MS Windows 8.1, Windows XP, Windows 2000, Windows ME, 98, 2003 and.NET Product keys from the registry and display it for you.
- The FOREIGN KEY constraint is a key used to link two tables together. A FOREIGN KEY is a field (or collection of fields) in one table that refers to the PRIMARY KEY in another table.
- Keegan-Michael Key, Actor: Keanu. Keegan-Michael Key was born in Southfield, Michigan and raised in Detroit. He was adopted as a child by a black father and a white mother. In 1989, he graduated from Shrine Catholic High School in Royal Oak, Michigan. Key attended the University of Detroit Mercy as an undergraduate and earned his Master of Fine Arts in Theater at Pennsylvania.
- For eighth's, divide the remainder, 0.382 by 0.125 and the answer is 3.056 so the fraction is a bit over 3 eighth's, therefore the answer ends up as approx. 4 3/8' Calculators, Tables, Charts for Converting Metric to Imperial and reverse.
RegiStax 3 Release 3.0.1.23 (855kb) -released 28 jan 2005 Manual part1 -released 21 dec 2004 part2 -released 21 dec 2004.
| Deutsche Version |
Conversion and calculation − cross section < > diameter
● Cable diameter to circle cross-sectional areaand vice versa ●
Round electric cable, conductor, wire, cord, string,wiring, and rope
| Cross section is just a two-dimensional view of a slice through an object. An often asked question: How can you convert the diameter of a round wire d = 2 × r to the circle cross section surface or the cross-section area A (slice plane) to the cable diameter d? Why is the diameter value greater than the area value? Because that's not the same. Resistance varies inversely with the cross-sectional area of a wire. The required cross-section of an electrical line depends on the following factors: 1) Rated voltage. Net form. (Three-phase (DS) / AC (WS)) 2) Fuse - Upstream backup = Maximum permissible current (Amp) 3) On schedule to be transmittedpower (kVA) 4) Cable length in meters (m) 5) Permissible voltage drop (% of the rated voltage) 6) Line material. Copper (Cu) or aluminum (Al) |
| The used browser does not support JavaScript. You will see the program but the function will not work. |
Dmg canvas 2 3 3 – create custom disk images. The 'unit' is usually millimeters but it can also be inches, feet, yards, meters (metres),
or centimeters, when you take for the area the square of that measure.
Litz wire (stranded wire) consisting of many thin wires need a 14 % larger diameter compared to a solid wire. Scientific toolworks understand 5 1 1012 download free.
Keykey 1 0 3 Fraction
Cross section is an area. Diameter is a linear measure. That cannot be the same. The cable diameter in millimeters is not the cable cross-section in square millimeters. |
| The cross section or the cross sectional area is the area of such a cut. It need not necessarily have to be a circle. Commercially available wire (cable) size as cross sectional area: 0.75 mm2, 1.5 mm2, 2.5 mm2, 4 mm2, 6 mm2, 10 mm2, 16 mm2. |
r = radius of the wire or cable
d = 2 r = diameter of the wire or cable
Calculation of the diameter d = 2 r, entering the cross section A:
The conductor (electric cable)
| There are four factors that affect the resistance of a conductor: 1) the cross sectional area of a conductor A, calculated from the diameter d 2) the length of the conductor 3) the temperature in the conductor 4) the material constituting the conductor |
| There is no exact formula for the minimum wire size from the maximum amperage. It depends on many circumstances, such as for example, if the calculation is for DC, AC or even for three-phase current, whether the cable is released freely, or is placed under the ground. Also, it depends on the ambient temperature, the allowable current density, and the allowable voltage drop, and whether solid or litz wire is present. And there is always the nice but unsatisfactory advice to use for security reasons a thicker and hence more expensive cable. Common questions are about the voltage drop on wires. |
Voltage drop Δ V
The voltage drop formula with the specific resistance (resistivity) ρ (rho) is:
I = Current in ampere l = Wire (cable) length in meters (times 2, because there is always a return wire) ρ = rho, electrical resistivity (also known as specific electrical resistance or volume resistivity) of copper = 0.01724 ohm×mm2/m (also Ω×m) (Ohms for l = 1 m length and A = 1 mm2 cross section area of the wire)ρ = 1 / σ A = Cross section area in mm2 σ = sigma, electrical conductivity (electrical conductance) of copper = 58 S·m/mm2 |
|
The derived SI unit of electrical resistivity ρ is Ω ×m, shortened from the clear Ω ×mm² / m.
The reciprocal of electrical resistivity is electrical conductivity.
Electrical conductance and electrical resistance ρ = 1/κ = 1/σ
| Electrical conductor | Electrical conductivity Electrical conductance | Electrical resistivity Specific resistance |
| silver | σ = 62 S·m/mm² | ρ = 0.0161 Ohm∙mm²/m |
| copper | σ = 58 S·m/mm² | ρ = 0.0172 Ohm∙mm²/m |
| gold | σ= 41 S·m/mm² | ρ = 0.0244 Ohm∙mm²/m |
| aluminium | σ = 36 S·m/mm² | ρ = 0.0277 Ohm∙mm²/m |
| constantan | σ= 2.0 S·m/mm² | ρ = 0.5000 Ohm∙mm²/m |
Difference between electrical resistivity and electrical conductivity
| The conductance in siemens is the reciprocal of the resistance in ohms. |
| To use the calculator, simply enter a value. The calculator works in both directions of the ↔ sign. |
| The value of the electrical conductivity (conductance) and the specific electrical resistance (resistivity) is a temperature dependent material constant. Mostly it is given at 20 or 25°C. |
Resistance = resistivity x length / area
| The specific resistivity of conductors changes with temperature. In a limited temperature range it is approximately linear: where α is the temperature coefficient, T is the temperature and T0 is any temperature, such as T0 = 293.15 K = 20°C at which the electrical resistivity ρ (T0) is known. |
Convert resistance to electrical conductance
Conversion of reciprocal siemens to ohms
1 ohm [Ω] = 1 / siemens [1/S]
1 siemens [S] = 1 / ohm [1/Ω]
Keykey 1 0 3 0
| To use the calculator, simply enter a value. The calculator works in both directions of the ↔ sign. |
Totalfinder 1 1 14 intelk download free. 1 millisiemens = 0.001 mho = 1000 ohms
| Mathematically, conductance is the reciprocal, or inverse, of resistance: The symbol for conductance is the capital letter 'G' and the unit is the mho, which is 'ohm' spelled backwards. Later, the unit mho was replaced by the unit Siemens − abbreviated with the letter 'S'. |
Table of typical loudspeaker cables
| Cable diameter d | 0.798 mm | 0.977 mm | 1.128 mm | 1.382 mm | 1.784 mm | 2.257 mm | 2.764 mm | 3.568 mm |
| Cable nominal cross section A | 0.5 mm2 | 0.75 mm2 | 1.0 mm2 | 1.5 mm2 | 2.5 mm2 | 4.0 mm2 | 6.0 mm2 | 10.0 mm2 |
| Maximum electrical current | 3 A | 7.6 A | 10.4 A | 13.5 A | 18.3 A | 25 A | 32 A | - |
Always consider, the cross section must be made larger with higher power and higher length of
the cable, but also with lesser impedance. Here is a table to tell the possible power loss.
| Cable length in m | Section in mm2 | Resistance in ohm | Power loss at | Damping factor at | ||
| Impedance 8 ohm | Impedance 4 ohm | Impedance 8 ohm | Impedance 4 ohm | |||
| 1 | 0.75 | 0.042 | 0.53% | 1.05% | 98 | 49 |
| 1.50 | 0.021 | 0.31% | 0.63% | 123 | 62 | |
| 2.50 | 0.013 | 0.16% | 0.33% | 151 | 75 | |
| 4.00 | 0.008 | 0.10% | 0.20% | 167 | 83 | |
| 2 | 0.75 | 0.084 | 1.06% | 2.10% | 65 | 33 |
| 1.50 | 0.042 | 0.62% | 1.26% | 85 | 43 | |
| 2.50 | 0.026 | 0.32% | 0.66% | 113 | 56 | |
| 4.00 | 0.016 | 0.20% | 0.40% | 133 | 66 | |
| 5 | 0.75 | 0.210 | 2.63% | 5.25% | 32 | 16 |
| 1.50 | 0.125 | 1.56% | 3.13% | 48 | 24 | |
| 2.50 | 0.065 | 0.81% | 1.63% | 76 | 38 | |
| 4.00 | 0.040 | 0.50% | 1.00% | 100 | 50 | |
| 10 | 0.75 | 0.420 | 5.25% | 10.50% | 17 | 9 |
| 1.50 | 0.250 | 3.13% | 6.25% | 28 | 14 | |
| 2.50 | 0.130 | 1.63% | 3.25% | 47 | 24 | |
| 4.00 | 0.080 | 1.00% | 2.00% | 67 | 33 | |
| 20 | 0.75 | 0.840 | 10.50% | 21.00% | 9 | 5 |
| 1.50 | 0.500 | 6.25% | 12.50% | 15 | 7 | |
| 2.50 | 0.260 | 3.25% | 6.50% | 27 | 13 | |
| 4.00 | 0.160 | 2.00% | 4.00% | 40 | 20 |
The damping factor values show, what remains of an accepted damping factor of 200
depending on the cable length, the cross section, and the impedance of the loudspeaker.
Conversion and calculation of cable diameter to AWG
and AWG to cable diameter in mm - American Wire Gauge
| The gauges we most commonly use are even numbers, such as 18, 16, 14, etc. If you get an answer that is odd, such as 17, 19, etc., use the next lower even number. AWG stands for American Wire Gauge and refers to the strength of wires. These AWG numbers show the diameter and accordingly the cross section as a code. They are only used in the USA. Sometimes you find AWG numbers also in catalogues and technical data in Europe. |
American Wire Gauge - AWG Chart
| AWG number | 46 | 45 | 44 | 43 | 42 | 41 | 40 | 39 | 38 | 37 | 36 | 35 | 34 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diameter in inch | 0.0016 | 0.0018 | 0.0020 | 0.0022 | 0.0024 | 0.0027 | 0.0031 | 0.0035 | 0.0040 | 0.0045 | 0.0050 | 0.0056 | 0.0063 |
| Diameter (Ø) in mm | 0.04 | 0.05 | 0.05 | 0.06 | 0.06 | 0.07 | 0.08 | 0.09 | 0.10 | 0.11 | 0.13 | 0.14 | 0.16 |
| Cross section in mm2 | 0.0013 | 0.0016 | 0.0020 | 0.0025 | 0.0029 | 0.0037 | 0.0049 | 0.0062 | 0.0081 | 0.010 | 0.013 | 0.016 | 0.020 |
| AWG number | 33 | 32 | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 |
| Diameter in inch | 0.0071 | 0.0079 | 0.0089 | 0.0100 | 0.0113 | 0.0126 | 0.0142 | 0.0159 | 0.0179 | 0.0201 | 0.0226 | 0.0253 | 0.0285 |
| Diameter (Ø) in mm | 0.18 | 0.20 | 0.23 | 0.25 | 0.29 | 0.32 | 0.36 | 0.40 | 0.45 | 0.51 | 0.57 | 0.64 | 0.72 |
| Cross section in mm2 | 0.026 | 0.032 | 0.040 | 0.051 | 0.065 | 0.080 | 0.10 | 0.13 | 0.16 | 0.20 | 0.26 | 0.32 | 0.41 |
| AWG number | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
| Diameter in inch | 0.0319 | 0.0359 | 0.0403 | 0.0453 | 0.0508 | 0.0571 | 0.0641 | 0.0719 | 0.0808 | 0.0907 | 0.1019 | 0.1144 | 0.1285 |
| Diameter (Ø) in mm | 0.81 | 0.91 | 1.02 | 1.15 | 1.29 | 1.45 | 1.63 | 1.83 | 2.05 | 2.30 | 2.59 | 2.91 | 3.26 |
| Cross section in mm2 | 0.52 | 0.65 | 0.82 | 1.0 | 1.3 | 1.7 | 2.1 | 2.6 | 3.3 | 4.2 | 5.3 | 6.6 | 8.4 |
| AWG number | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 (1/0) (0) | 00 (2/0) (-1) | 000 (3/0) (-2) | 0000 (4/0) (-3) | 00000 (5/0) (-4) | 000000 (6/0) (-5) |
| Diameter in inch | 0.1443 | 0.1620 | 0.1819 | 0.2043 | 0.2294 | 0.2576 | 0.2893 | 0.3249 | 0.3648 | 0.4096 | 0.4600 | 0.5165 | 0.5800 |
| Diameter (Ø) in mm | 3.67 | 4.11 | 4.62 | 5.19 | 5.83 | 6.54 | 7.35 | 8.25 | 9.27 | 10.40 | 11.68 | 13.13 | 14.73 |
| Cross section in mm2 | 10.6 | 13.3 | 16.8 | 21.1 | 26.7 | 33.6 | 42.4 | 53.5 | 67.4 | 85.0 | 107.2 | 135.2 | 170.5 |
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| Look up key or Keys in Wiktionary, the free dictionary. |
Key or The Key may refer to:
Common meanings[edit]
- Key (cryptography), a piece of information that controls the operation of a cryptography algorithm
- Key (lock), device used to control access to places or facilities restricted by a lock
- Key (map), a guide to a map's symbology
- Key, on a typewriter or computer keyboard
- Answer key, a list of answers to a test
Geography[edit]
- Cay, also spelled key, a small, low-elevation, sandy island formed on the surface of a coral reef
United States[edit]
- Florida Keys, an archipelago of about 1,700 islands in the southeast United States
Elsewhere[edit]
- Key, Iran, a village in Isfahan Province, Iran
- Key Island, Tasmania, Australia
Arts and media[edit]
Films[edit]
- The Key (1934 film), a 1934 film directed by Michael Curtiz
- The Key (1958 film), a war film directed by Carol Reed, starring William Holden and Sophia Loren
- The Key, also known as Odd Obsession, a 1959 Japanese film directed by Kon Ichikawa
- The Key (1961 film), a Soviet animated feature
- The Key (1965 film), a Yugoslav omnibus film
- The Key (1971 film), a Czechoslovakian drama
- The Key (1983 film), an Italian erotic film directed by Tinto Brass, starring Stefania Sandrelli
- Kelid (The Key), a 1987 Iranian film written by Abbas Kiarostami
- The Key (2007 film), a French thriller film directed by Guillaume Nicloux
- Key (film), a 2011 film
- The Key (2014 film), an American film directed by Jefery Levy
Literature[edit]
- The Key (comics), a supervillain in the DC Comics universe
- The Key (Curley novel), by Marianne Curley
- The Key (Elfgren and Strandberg novel), by Mats Strandberg and Sara Bergmark Elfgren
- The Key (Tanizaki novel), by Jun'ichirō Tanizaki
- 'The Key' (short story), a 1966 short story by Isaac Asimov
- The Key, a 1969 book of etymology by John Philip Cohane
Music[edit]
- Key (music), the scale of a piece of music
- Key (instrument), part of a musical instrument used for playing or tuning
- Keys, short for keyboard instruments
Albums[edit]
- Key (Meredith Monk album), 1971
- Key (Son, Ambulance album), 2004
- The Key (Joan Armatrading album), 1983
- The Key (Vince Gill album), 1998
- The Key (Nocturnus album), 1990
- The Key (Operation: Mindcrime album), 2015
Songs[edit]
- 'The Key' (Speech Debelle song), 2009
- 'The Key' (Ou Est Le Swimming Pool song), 2010
- 'Key', a song from the album Maid in Japan by Band-Maid
- 'The Key', a song by Edita Abdieski
- 'Key', a song from the album Minecraft – Volume Alpha by C418
Keykey 1 0 30
Television[edit]
- 'The Key' (Code Lyoko episode), 2005
- 'The Key' (Prison Break episode), 2006
- 'The Key' (The Walking Dead), 2018
- 'The Key' (Yes, Prime Minister), 1986
- 'The Keys' (Seinfeld), a 1992 TV episode
Other uses in arts and media[edit]
- Kirby's Epic Yarn (KEY), a 2010 game by Nintendo
- Key, the title character of Key the Metal Idol, a Japanese anime OVA series
- The Key, a painting by Jackson Pollock
- The Key, a magazine published by Kappa Kappa Gamma
People[edit]
- Key (entertainer) (born 1991), South Korean entertainer
Sports[edit]
- Key (basketball), a restricted area around the basketball net
- Frederick Keys, a Double-A minor league baseball team
Technology[edit]
- Key (computing), a field in a computer file or database used to sort or retrieve records
- Key (engineering), a type of coupling used to transmit rotation between a shaft and an attached item
- KeY, a software verification tool
- The Key (smartcard), a contactless smartcard for public transport ticketing in Britain
- .key, file extension used by Keynote
- Telegraph key, the button used by a telegraph operator
Other uses[edit]
- Key (company), a Japanese visual novel studio
- The Key School, an independent coeducational school in Annapolis, Maryland
- Keys, a truce term used in western Scotland
- Amazon Key, a service by Amazon allowing customers to get deliveries inside of their home or car
- House of Keys, the directly elected lower branch of Tynwald, the parliament of the Isle of Man
- Samara (fruit) or key, a type of fruit
See also[edit]
- Keay, a surname
Retrieved from 'https://en.wikipedia.org/w/index.php?title=Key&oldid=983248749'
