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20. 40. 60. 80. 100.
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It means that the machine converts 80% of the power of its input fuel source to actual work. There is 20% waste likely as heat, noise or wear. Note that a machine powered by solar power is considered part of a 100% efficient system because rejected energy dissipated into the environment would have dissipated anyway. The efficiency of a machine is 80%. Determine the work done by a person using this machine to raise a load of 200kg through a vertical distance of 3.0 (take g = 10m/s) the Efficiency of a machine is 80％. determine the Work Done by a person using this machine to raise a load of 200kg through a vertical distance 3m?
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"We have Solved: If a machine has an efficiency of 40%, and you do 1000 J of work on the machine, what will be the work output of the machine? - Slader.
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Is the 60% of the work put into the machine the work input and is the other 40% the work output? Or am I totally off?
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Existence of friction in moving parts of machines has brought the concept of efficiency of a machine. The gas turbine efficiency, which is the function of turbine inlet temperature and the compression ratios, has increased significantly in the past decades, making it possible to reach 40–45% efficiency in simple cycle and beyond 60% efficiency (LHV) in natural gas fired combined cycles, a remarkable improvement over the E-class gas turbine used in the Buggenum IGCC plant and today’s F
A machine is driven by a 50 kg mass falling at a rate of 10.0 m in 5s. It lifts n load of 250 kgf.
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How much work must be done on the machine so to make it do 50,000 J of output work? 62,500 J. Mr. Franklin uses a machine that has an efficiency of 80%. The machine applies a force of 800N through a distance of 20 m. Mr. Franklin applies a force of 50 N on the machine. Answers: 1 Mr. Franklin uses a machine that has an efficiency of 80%.
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(d) Show that this is the same efficiency as a single Carnot engine operating between 450ºC and 150ºC. 6. A coal-fired electrical power station has an efficiency of 38%. Example: A 220V DC shunt machine has an armature resistance of 0.5Ω. If the full load armature current is 20A, find the induced emf when the machine acts as (i) generator (ii) motor. E A-+ R A-+ V T = 2 2 0 V R F L F I F I A = 20A I L E A-+ R A I A = 20A I L-+ V T = 2 2 0 V R F L F I F 𝐴= +𝐼𝐴 𝐴 = 𝐴+𝐼𝐴 𝐴 𝐴 The Equivalent Circuit of Synchronous Machine For Synchronous Generator jX m V a I a R a jX al AC V f I f E A R f E sa E r P out P g T in: input torque.
The machine applies a force of 800 N through a distance of 20 m. Mr. Franklin applies a force of 50 N on the machine. Through what distance does Mr. Franklin apply the force?