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  2. IEC 60034 - Wikipedia

    en.wikipedia.org/wiki/IEC_60034

    It classifies five classes: IE1 (standard), IE2 (high) and IE3 (premium), IE4 (super premium efficiency), IE5 (ultra premium efficiency). For each class the efficiency is defined for a rated output range from 0.75 to 375 kW. In the European Community the IE2 class is mandatory for all new motors since 16 June 2011. The IE3 class will be ...

  3. Premium efficiency - Wikipedia

    en.wikipedia.org/wiki/Premium_efficiency

    Premium efficiency, when used in reference to specific types of Electric Motors (with a rotating shaft), is a class of motor efficiency.. As part of a concerted effort worldwide to reduce energy consumption, CO 2 emissions and the impact of industrial operations on the environment, various regulatory authorities in many countries have introduced, or are planning, legislation to encourage the ...

  4. Category:Free software programmed in C - Wikipedia

    en.wikipedia.org/wiki/Category:Free_software...

    Pages in category "Free software programmed in C" The following 200 pages are in this category, out of approximately 633 total. This list may not reflect recent changes .

  5. List of optimization software - Wikipedia

    en.wikipedia.org/wiki/List_of_optimization_software

    Given a transformation between input and output values, described by a mathematical function, optimization deals with generating and selecting the best solution from some set of available alternatives, by systematically choosing input values from within an allowed set, computing the output of the function and recording the best output values found during the process.

  6. Engine efficiency - Wikipedia

    en.wikipedia.org/wiki/Engine_efficiency

    Engine efficiency of thermal engines is the relationship between the total energy contained in the fuel, and the amount of energy used to perform useful work. There are two classifications of thermal engines-

  7. Virtual method table - Wikipedia

    en.wikipedia.org/wiki/Virtual_method_table

    When an object is created, a pointer to this table, called the virtual table pointer, vpointer or VPTR, is added as a hidden member of this object. As such, the compiler must also generate "hidden" code in the constructors of each class to initialize a new object's virtual table pointer to the address of its class's virtual method table.

  8. Consumption map - Wikipedia

    en.wikipedia.org/wiki/Consumption_map

    A consumption map or efficiency map [1] is a chart that displays the brake-specific fuel consumption of an internal combustion engine at a given rotational speed and mean effective pressure, in grams per kilowatt-hour (g/kWh). The map contains each possible condition combining rotational speed and mean effective pressure.

  9. GNU Compiler Collection - Wikipedia

    en.wikipedia.org/wiki/GNU_Compiler_Collection

    Users invoke a language-specific driver program (gcc for C, g++ for C++, etc.), which interprets command arguments, calls the actual compiler, runs the assembler on the output, and then optionally runs the linker to produce a complete executable binary. Each of the language compilers is a separate program that reads source code and outputs ...