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Northern IrelandTechnology and DesignQuick questions
Electronic and control systems
Quick questions on Output devices and the transistor switch - CCEA GCSE Technology and Design
6short 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 the relay?Show answer
A transistor often switches the relay coil, and the relay then switches the heavy or mains load - combining both devices.
What is q1?Show answer
Name two output devices and the action each produces. [2 marks]
What is q2?Show answer
What turns a transistor on when it is used as a switch? [1 mark]
What is q3?Show answer
Why can a small sensor signal not drive a motor directly? [2 marks]
What is q4?Show answer
What is a relay? [1 mark]
What is q5?Show answer
Why is a protection diode fitted across a motor driven by a transistor? [2 marks]
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