Drive Arithmetic: Successive Efficiencies and Power Loss

Drive Arithmetic: Successive Efficiencies and Power Loss

Original quantitative learning practice in English. All 24 questions are included. Four supplied cases exercise six related calculation targets; they form one topic, not four separate tests. Every question includes the complete initial data. Use the stated model and retain intermediate precision. Choose one answer. Learning target: 20/24, not an official pass mark. This bank covers the calculation topic in its title; it is not a complete professional examination, design approval or operating instruction.
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A model drive receives 16 kW electrical power. Motor efficiency is 87%; the gearbox transmits 86% of the motor output. Efficiencies are defined as output/input for each component. No other losses exist. Reverse calculations use the same fixed efficiencies; this is not equipment selection. Calculate the electrical input required per 1 kW load output in kW. Keep intermediate values unrounded; round the final result to four decimal places if necessary.