Electrical Appliances - JSS1 Basic technology Past Questions and Answers - page 2
What is the purpose of understanding how appliances work?
To perform maintenance
To maximise efficiency
To troubleshoot efficiency
All of the above
How does a refrigerator typically work?
By producing heat
By removing heat
By emitting light
By generating sound
What role does a compressor play in a refrigerator?
It removes heat from the interior
It emits light
It generates sound
It produces heat
What is a key consideration when using electrical appliances?
Energy waste
Environmental impact
Safety
Aesthetics
Which of the following is NOT a safety precaution when using electrical appliances?
Using grounded outlets
Avoiding overloading circuits
Keeping appliances near water sources
Regularly inspecting appliances
What is the purpose of understanding how appliances work?
Understanding how appliances work enables individuals to perform maintenance, troubleshoot issues, and maximise efficiency. By comprehending the underlying mechanisms of appliances, users can identify and rectify problems, prolonging the lifespan of the devices and ensuring optimal performance.
How does a refrigerator typically work?
A refrigerator typically works by removing heat from its interior. This process is facilitated by a compressor, which compresses refrigerant gas, causing it to release heat. The cooled refrigerant then absorbs heat from the refrigerator's interior, keeping the contents cool.
What is a key consideration when using electrical appliances?
Safety is a key consideration when using electrical appliances. It is essential to follow manufacturer instructions, ensure proper installation, and regularly inspect appliances for signs of wear or damage. Additionally, using grounded outlets, avoiding overloading circuits, and keeping appliances away from water sources help minimise risks associated with electrical usage.
What should individuals do to minimise risks associated with electrical usage?
To minimise risks associated with electrical usage, individuals should follow manufacturer instructions, ensure proper installation, and regularly inspect appliances. It is also important to use grounded outlets, avoid overloading circuits, and keep appliances away from water sources to mitigate hazards effectively.
What is the primary focus when using electrical appliances?
The primary focus when using electrical appliances is to enhance convenience while prioritising safety. Electrical appliances play integral roles in households, workplaces, and industries, offering efficiency and comfort. However, ensuring proper usage and adhering to safety precautions are essential to prevent accidents and maintain optimal performance.