9.1 Preventative maintenance can be divided into two subgroups - NSC Mechanical Technology Fitting and Machining - Question 9 - 2023 - Paper 1
Question 9
9.1 Preventative maintenance can be divided into two subgroups. Name the TWO subgroups.
9.2 State THREE advantages of belt drives compared to gear drives.
9.3 Name... show full transcript
Worked Solution & Example Answer:9.1 Preventative maintenance can be divided into two subgroups - NSC Mechanical Technology Fitting and Machining - Question 9 - 2023 - Paper 1
Step 1
Preventative maintenance can be divided into two subgroups. Name the TWO subgroups.
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Answer
The two subgroups of preventative maintenance are:
Planned or scheduled maintenance, which involves organized and routine checks to prevent wear and tear.
Conditional-based maintenance, where maintenance is performed based on the condition of the equipment.
Step 2
State THREE advantages of belt drives compared to gear drives.
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Three advantages of belt drives over gear drives include:
Less Noise and Vibration: Belt drives produce less noise and vibration compared to gear drives, leading to smoother operation.
Cost Effectiveness: They are generally more cost-effective to manufacture and maintain than gear drives.
Versatility: Belt drives can easily handle varying distances and configurations, allowing for greater flexibility in design.
Step 3
Name THREE types of belt drives.
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Three types of belt drives are:
V-pulley: Typically used for transmitting power between shafts that are not aligned.
Flat belt: Commonly used in various applications for efficient transmission with minimal slippage.
Round belt: Often used in smaller machinery due to their flexibility.
Step 4
Which material is commonly used for non-stick coatings on frying pans?
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The material commonly used for non-stick coatings on frying pans is Teflon, known for its excellent non-stick properties.
Step 5
State TWO uses of EACH of the following composites: Polyvinyl chloride (PVC)
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Two uses of Polyvinyl chloride (PVC) include:
Trays for food and toiletries: Often used due to its durability and ease of cleaning.
Electrical pipes: Used extensively for housing electrical wiring.
Step 6
State TWO uses of EACH of the following composites: Bakelite
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Two uses of Bakelite include:
Electrical insulators: Used in circuits due to its insulating properties.
Kitchenware: Commonly found in items like utensils and cookware due to its heat resistance.
Step 7
State TWO uses of EACH of the following composites: Fibreglass
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Two uses of Fibreglass include:
Surface covering: Widely used in construction and automotive applications for its strong yet lightweight characteristics.
Pillow stuffing: Also used in various cushions and pillows providing comfort.
Step 8
State whether EACH of the following materials is a thermo-hardened or a thermoplastic composite: Carbon fibre
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Answer
Carbon fibre is classified as a thermo-hardened (thermosetting) composite.
Step 9
State whether EACH of the following materials is a thermo-hardened or a thermoplastic composite: Nylon
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Nylon is classified as a thermoplastic composite.
Step 10
State whether EACH of the following materials is a thermo-hardened or a thermoplastic composite: Bakelite
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Answer
Bakelite is classified as a thermo-hardened (thermosetting) composite.
