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Northern IrelandTechnology and DesignQuick questions
A2 1 Mechanical and Pneumatic Control Systems
Quick questions on Energy, power and efficiency: work, torque and the efficiency of machines - CCEA A-Level Technology and Design
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is q1?Show answer
State the equation for work done. [1 mark]
What is q2?Show answer
A machine has MA = 3 and VR = 4. Find its efficiency. [2 marks]
What is q3?Show answer
Why is the efficiency of a real machine always less than 100 per cent? [2 marks]
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