are overcome in performing useful work and lost work respectively. 660. The Efficiency of a machine is a fraction expressing the ratio of the useful work to the whole work performed, which is equal to the energy expended. The limit to the efficiency of... A Manual of Applied Mechanics - الصفحة 606بواسطة William John Macquorn Rankine - 1872 - عدد الصفحات: 648عرض كامل - حول هذا الكتاب
| William John Macquorn Rankine - 1866 - عدد الصفحات: 575
...moving with its mean velocity, as found according to the principles of Article 31. been defined to be **a fraction expressing the ratio of the useful work...machine is unity, denoting the efficiency of a perfect** machine in which no work is lost. The object of improvements in machines is to bring their efficiency... | |
| William John Macquorn Rankine - 1870 - عدد الصفحات: 575
...means of the friction of a brake. Brakes will be further described in the sequel. been defined to be **a fraction expressing the ratio of the useful work...expended. The limit to the efficiency of a machine is** uniti/, denoting the efficiency of a perfect machine in which no work is lost. The object of improvements... | |
| William John Macquorn Rankine, Edward Fisher Bamber - 1873 - عدد الصفحات: 312
...and Prejudicial Resistance are overcome in performing useful work and lost work respectively. 385. **The Efficiency of a machine is a fraction expressing...machine is unity, denoting the efficiency of a perfect** machine in which no work is lost. The object of improvements in machines is to bring their efficiency... | |
| William John Macquorn Rankine, Edward Fisher Bamber - 1873 - عدد الصفحات: 312
...increased by means of the friction of a brake. Brakes will be further described in the sequel. 418. **The Efficiency of a machine is a fraction expressing the ratio of the useful work to the whole work,** which is equal to the energy expended. The COUNTER-EFFICIENCY \a machines is to bring their efficiency... | |
| William John Macquorn Rankine, Edward Fisher Bamber - 1873 - عدد الصفحات: 312
...increased by means of the friction of a brake. Brakes will be further described in the sequel. 418. **The Efficiency of a machine is a fraction expressing the ratio of the useful work to the whole work,** which is equal to the energy expended. The COUNTER-EFFICIENCY is the reciprocal of the efficiency,... | |
| William John Macquorn Rankine - 1878 - عدد الصفحات: 583
...means of the friction of a brake. Brakes will be further described in the sequel. been defined to be **a fraction expressing the ratio of the useful •work...machine is unity, denoting the efficiency of a perfect** machine in which no work is lost. The object of improvements in machines is to bring their efficiency... | |
| Morgan W. Crofton - 1881
...but they never can be altogether removed. 20. Efficiency of a Machine.—This is defined to be the **fraction expressing the ratio of the useful work to the whole work,** which is equal to the energy expended. It is sometimes called the Modulus of the machine. This fraction... | |
| Henry Adams - 1883 - عدد الصفحات: 93
...energy exerted, and the effect the useful work performed, in some interval of time of definite length. **The efficiency of a machine is a fraction expressing...ratio of the useful work to the whole work performed** or energy expended. This ratio is also called the modulus or coefficient of the machine. The counter-efficiency... | |
| Henry Adams - 1883 - عدد الصفحات: 93
...energy exerted, and the effect the useful work performed, in some interval of time of definite length. **The efficiency of a machine is a fraction expressing...ratio of the useful work to the whole work performed** or energy expended. This ratio is also called the modulus or coefficient of the machine. The counter-efficiency... | |
| William John Macquorn Rankine, Edward Fisher Bamber - 1884 - عدد الصفحات: 312
...increased by means of the friction of a brake. Brakes will be further described in the sequel. 418. **The Efficiency of a machine is a fraction expressing the ratio of the useful work to the whole work,** which is equal to the energy expended. The COUNTER-EFFICIENCY is the reciprocal of the efficiency,... | |
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