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ScotlandEngineering ScienceQuick questions
Area 2: Electronics and control
Quick questions on Output devices and interfacing - SQA Higher Engineering Science
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 energy conversion in a buzzer. [1 mark]
What is q2?Show answer
An LED (forward voltage 2 V) runs at 20 mA from a 6 V supply. Find the series resistor. [2 marks]
What is q3?Show answer
State why a motor is interfaced to a logic output through a transistor rather than connected directly. [1 mark]
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