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  2. Solenoid valve - Wikipedia

    en.wikipedia.org/wiki/Solenoid_valve

    For example, a popular 34-inch 150 psi sprinkler valve, intended for 24 VAC (50–60 Hz) residential systems, has a momentary inrush of 7.2 VA, and a holding power requirement of 4.6 VA. [5] Comparatively, an industrial 1 ⁄ 2 -inch 10,000 psi valve, intended for 12, 24, or 120 VAC systems in high-pressure fluid and cryogenic applications ...

  3. Carbon accounting - Wikipedia

    en.wikipedia.org/wiki/Carbon_accounting

    Carbon accounting. Depiction of carbon accounting using the WRI-Greenhouse Gas Protocol classification of emissions into three categories: Scope 1, 2, and 3. Additional downstream Scope 3 sources are shown on WRI’s website. [1][2] Carbon accounting (or greenhouse gas accounting) is a framework of methods to measure and track how much ...

  4. International Standard Classification of Occupations - Wikipedia

    en.wikipedia.org/wiki/International_Standard...

    The International Standard Classification of Occupations (ISCO) is an International Labour Organization (ILO) classification structure for organizing information on labour and jobs. It is part of the international family of economic and social classifications of the United Nations. [1] The current version, known as ISCO-08, was published in ...

  5. Job costing - Wikipedia

    en.wikipedia.org/wiki/Job_costing

    Job costing (known by some as job order costing) is fundamental to managerial accounting. It differs from Process costing in that the flow of costs is tracked by job or batch instead of by process. job cost is done for one single product The distinction between job costing and process costing hinges on the nature of the product and, therefore, on the type of production process:

  6. Calculator input methods - Wikipedia

    en.wikipedia.org/wiki/Calculator_input_methods

    Calculator input methods. There are various ways in which calculators interpret keystrokes. These can be categorized into two main types: On a single-step or immediate-execution calculator, the user presses a key for each operation, calculating all the intermediate results, before the final value is shown. [ 1 ][ 2 ][ 3 ] On an expression or ...

  7. Air-operated valve - Wikipedia

    en.wikipedia.org/wiki/Air-operated_valve

    [1] [2] 3-way valves pressurize and exhaust one outlet port to control a single-acting cylinder or pilot another valve. [3] Three-way valves may be used in pairs to operate a double-acting cylinder, thus replacing a four-way valve. A primary function of the 3-way valve is to save/store air that's compressed in high cyclic applications. 4-way ...

  8. Technology readiness level - Wikipedia

    en.wikipedia.org/wiki/Technology_readiness_level

    Technology readiness levels (TRLs) are a method for estimating the maturity of technologies during the acquisition phase of a program. TRLs enable consistent and uniform discussions of technical maturity across different types of technology. [1] TRL is determined during a technology readiness assessment (TRA) that examines program concepts ...

  9. Pascal's calculator - Wikipedia

    en.wikipedia.org/wiki/Pascal's_calculator

    Pascal's calculator (also known as the arithmetic machine or Pascaline) is a mechanical calculator invented by Blaise Pascal in 1642. Pascal was led to develop a calculator by the laborious arithmetical calculations required by his father's work as the supervisor of taxes in Rouen. [2] He designed the machine to add and subtract two numbers ...