Podcast
Questions and Answers
What is the purpose of the Safety Guard in the laser cutter?
What is the purpose of the Safety Guard in the laser cutter?
- To ensure the machine only operates when the extraction system is on (correct)
- To monitor the temperature of the laser cutter
- To operate the extraction system
- To turn off the laser cutter when the extraction system is off
What is the advantage of using ICs with NAND gates over those with AND, OR, and NOT gates?
What is the advantage of using ICs with NAND gates over those with AND, OR, and NOT gates?
- They can perform more complex logic operations
- They take up less space on the circuit board
- They are more versatile and can be used in a wider range of applications (correct)
- They are cheaper to produce
What is the output of a NAND gate when both inputs are 1?
What is the output of a NAND gate when both inputs are 1?
- 1
- 0 (correct)
- undefined
- either 0 or 1
What is the purpose of the gear train in the metal turning lathe?
What is the purpose of the gear train in the metal turning lathe?
How can each gear be secured to its shaft?
How can each gear be secured to its shaft?
What is the Velocity Ratio (VR) calculated for in the compound gear train?
What is the Velocity Ratio (VR) calculated for in the compound gear train?
What is the primary purpose of morphological analysis and reverse engineering in the development of new products?
What is the primary purpose of morphological analysis and reverse engineering in the development of new products?
What is the benefit to the client of using CAD and CAM to produce bespoke custom made products?
What is the benefit to the client of using CAD and CAM to produce bespoke custom made products?
What is the function of piezoelectric transducers in electronic products?
What is the function of piezoelectric transducers in electronic products?
What is the advantage of using iterative development processes in product design?
What is the advantage of using iterative development processes in product design?
What is the primary benefit of using electronic products that interact with the environment?
What is the primary benefit of using electronic products that interact with the environment?
What is the purpose of revitalizing traditional products?
What is the purpose of revitalizing traditional products?
What is the primary purpose of the mobility scooter seat adjustment system?
What is the primary purpose of the mobility scooter seat adjustment system?
What is the voltage of the motor used to power the mobility scooter?
What is the voltage of the motor used to power the mobility scooter?
What type of transistor is used in the circuit to control the 5 Volt motor?
What type of transistor is used in the circuit to control the 5 Volt motor?
What is the purpose of the relay switch in the modified circuit?
What is the purpose of the relay switch in the modified circuit?
Why would the mobility scooter require further modifications for severely disabled people?
Why would the mobility scooter require further modifications for severely disabled people?
What is the primary reason for designing a seat adjustment system in the mobility scooter?
What is the primary reason for designing a seat adjustment system in the mobility scooter?
Study Notes
Laser Cutter Safety
- The laser cutter should not operate until the Safety Guard has been closed and the extraction system has been turned on.
- A Quad Input AND gate integrated circuit (IC) can be used to ensure that the machine will not operate until two sensors have been activated.
ICs in Preference
- ICs that contain NAND gates are often used in preference to those that contain AND, OR, and NOT gates.
NAND Gate
- A NAND gate has a truth table with the following inputs and outputs:
- Input A: 0, Input B: 0, Output Q: 1
- Input A: 0, Input B: 1, Output Q: 1
- Input A: 1, Input B: 0, Output Q: 1
- Input A: 1, Input B: 1, Output Q: 0
Compound Gear Train
- A compound gear train is used to drive the headstock of a metal turning lathe.
- The Velocity Ratio (VR) and Rotational Velocity (RV) can be calculated for the gear train.
- Each gear needs to be secured to its shaft to prevent slipping when subjected to a rotational force.
Gear Securing
- Gears can be secured to their shafts using a mechanism that prevents rotational force from causing slipping.
Design and Technology
- Design and technology processes involve iterative development, morphological analysis, and reverse engineering.
- Morphological analysis and reverse engineering can benefit the iterative development process.
- Computer Aided Design (CAD) and Computer Aided Manufacture (CAM) can be used to produce bespoke custom-made products.
Bespoke Products
- The advantages of using CAD and CAM to produce bespoke products include benefits to the client and manufacturer.
Piezoelectric Transducers
- Piezoelectric transducers can be used to measure changes in pressure, acceleration, temperature, strain, or force by converting signals into an electrical charge.
- This technology can be used to improve the performance of products such as humanoid robots and voice-controlled smart speakers.
Mobility Scooter
- The design of a modern mobility scooter can be analysed based on specification points.
- A mechanical system can be designed to allow the seat of a mobility scooter to be easily adjusted and securely locked in position.
- A 24 Volt DC motor can be controlled by outputs from a Microcontroller using a MOSFET Transistor or relay switch.
- The mobility scooter can be modified for use by more severely disabled people.
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Description
Test your knowledge of engineering design with this A-Level Design and Technology quiz, covering topics such as design principles, materials, and manufacturing processes. This quiz is based on the AS Unit 1 exam and is suitable for students preparing for the exam.
