City Guilds Model Questions Vol1 2020 Engineering Question 20

Practice objective / multiple choice question 20 from the 2020 City Guilds Model Questions Vol1 Engineering examination.

City Guilds Model Questions Vol1 2020 Engineering Objective / Multiple Choice Medium Difficulty
Question 20 CITY_GUILDS_MODEL_QUESTIONS_VOL1 • 2020 • ENGINEERING • objective

A motor delivers \(5\) kW at \(1500\) rpm and drives a belt‑pulley system. The driver pulley has a diameter of \(200\) mm and the driven pulley a diameter of \(500\) mm. The belt efficiency is \(95\%\). The load on the driven pulley requires a torque of \(250\) Nm. Determine (i) whether the motor can supply the required torque after the belt, (ii) the maximum torque available at the driven pulley, and (iii) the speed of the driven pulley in rpm.

Answer Options

A. No; maximum torque ≈ 85.2 Nm, driven speed = 600 rpm (required 250 Nm cannot be met).
Correct Answer B. No; maximum torque ≈ 75.6 Nm, driven speed = 600 rpm (required 250 Nm cannot be met).
C. Yes; maximum torque ≈ 75.6 Nm, driven speed = 600 rpm (required 250 Nm can be met).
D. No; maximum torque ≈ 75.6 Nm, driven speed = 500 rpm (required 250 Nm cannot be met).
Correct Answer
B
Correct Option:
No; maximum torque ≈ 75.6 Nm, driven speed = 600 rpm (required 250 Nm cannot be met).

About This Question

This is City Guilds Model Questions Vol1 2020 Engineering Question 20. It is one of the objective questions from the 2020 City Guilds Model Questions Vol1 Engineering examination.

Difficulty level: Medium .

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