City Guilds Model Questions Vol1 2019 Engineering Question 6
Practice objective / multiple choice question 6 from the 2019 City Guilds Model Questions Vol1 Engineering examination.
A motor drives a belt‑drive system as follows: the motor shaft has radius \(0.10\) m and supplies torque \(T_{m}\). A small pulley of radius \(0.05\) m is mounted on the same shaft and drives, via a belt of efficiency \(90\%\), a larger pulley of radius \(0.15\) m. The larger pulley is fixed to the same shaft as a drum of radius \(0.20\) m that lifts a load through a rope. The drum has an efficiency of \(85\%\). If the load to be lifted is \(500\) N, what is the minimum motor torque \(T_{m}\) (in N·m, to one decimal place) required to raise the load at constant speed?
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About This Question
This is City Guilds Model Questions Vol1 2019 Engineering Question 6. It is one of the objective questions from the 2019 City Guilds Model Questions Vol1 Engineering examination.
Difficulty level: Medium .
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