Statics and Dynamics Quiz
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DYNAMICS
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A two-stage power transmission system connects a motor to a load. The motor outputs P0=20 kW. Stage 1 (a gearbox) has efficiency η1=90%. Stage 2 (a belt drive) has efficiency η2=85%. A technician proposes to improve the overall system by replacing Stage 1 with a higher-efficiency gearbox having η1′=95%, keeping Stage 2 unchanged.
By how much does the power delivered to the load increase due to this upgrade?
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