Igcse Model Questions Vol1 2017 Physics Question 32
Practice objective / multiple choice question 32 from the 2017 Igcse Model Questions Vol1 Physics examination.
A motor supplies mechanical power of \(1.5\) kW at \(1500\) rpm. It drives a belt system consisting of two stages. Stage 1: driver pulley radius \(0.15\) m, driven pulley radius \(0.45\) m. Stage 2: driver pulley (attached to the first driven shaft) radius \(0.30\) m, driven pulley radius \(0.10\) m, which drives a pump. The pump requires a speed of at least \(1200\) rpm and must deliver \(2.0\) kW of hydraulic power with an efficiency of \(70\%\). Each belt operates at \(90\%\) efficiency.\n(a) Determine the speed of the pump shaft.\n(b) Calculate the minimum motor power required to meet the pump's hydraulic power demand, taking all efficiencies into account.
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About This Question
This is Igcse Model Questions Vol1 2017 Physics Question 32. It is one of the objective questions from the 2017 Igcse Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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