SPM Asas Kelestarian (Malaysia)

According to the KSSM Asas Kelestarian framework, which three elements define sustainability (kelestarian)?

• AEconomy, social and environment
• BEnergy, transport and construction only
• CProfit, marketing and branding only
• DHydraulics, pneumatics and electricity only

Local Agenda 21 (Agenda Tempatan 21 / LA 21) is best described as:

• AA local action plan that links community needs to sustainable development goals after Age…
• BA Malaysian SPM grading scale from A+ to G
• CA type of four-stroke petrol engine
• DA sanitary landfill lining material

In Malaysian Green Technology policy discussion within Asas Kelestarian, which set best matches the four national Green Technology pillars commonly emphasised?

• AEnergy, environment, economy and social
• BOnly aesthetics, colour, logo and packaging
• COnly hydraulic oil grade and pump size
• DOnly SPM Paper 2 project titles

Green Technology (Teknologi Hijau) in the Asas Kelestarian DSKP is best defined as development and application of products, equipment and systems that:

• AConserve the environment and natural resources while minimising negative human impacts
• BMaximise landfill dumping without treatment
• CReplace all school subjects with marketing slogans
• DIncrease fossil-fuel combustion with no efficiency gains

When debating current sustainable-development issues, DSKP expects students to consider roles of which stakeholder groups?

• ADeveloped nations, government, industry and educational institutions
• BOnly football clubs and fashion brands
• COnly excavator operators abroad
• DOnly private SPM candidates outside Malaysia

Which factor set does DSKP Asas Kelestarian emphasise when evaluating whether a product design is suitable?

• AHuman, function, strength, aesthetics and materials
• BOnly exam fee and timetable length
• COnly landfill cell depth and leachate pipes
• DOnly SPM subject code 3768

A sustainable (lestari) product design feature most clearly aims to:

• AMinimise environmental impact across material choice, use and end-of-life
• BIncrease single-use packaging with no recycling path
• CIgnore strength so the product fails quickly
• DHide energy consumption from users forever

Why is the 'human' design factor important in Asas Kelestarian product design?

• AIt considers user safety, comfort, ergonomics and accessibility needs
• BIt only means choosing the most expensive brand name
• CIt replaces the need for any functional testing
• DIt forbids considering material properties

Selecting a lighter, recyclable polymer instead of a heavier non-recyclable mix for a consumer product mainly illustrates which design consideration?

• AMaterials choice supporting sustainability
• BIgnoring aesthetics completely
• CRemoving all strength requirements
• DAbandoning the product's intended function

Which statement best distinguishes efficient sustainable design from purely decorative redesign?

• AEfficient design reduces resource use or impact while still meeting function and strength…
• BEfficient design only changes the product colour
• CEfficient design always removes all safety features
• DEfficient design means never considering aesthetics

If a kettle design improves insulation so less electricity is wasted keeping water hot, which sustainability outcome is most directly improved?

• AEnergy efficiency during use
• BIncrease in untreated sewage discharge
• CFaster landfill saturation only
• DHigher hydraulic pump pressure

Aesthetics as a design factor in Asas Kelestarian primarily concerns:

• AAppearance, form and visual appeal that still respect other design constraints
• BOnly the SPM Paper 1 duration of 2 hours 30 minutes
• COnly IWK sewerage tariffs
• DOnly Act 672 waste definitions

Strength as a design factor means the product should:

• AWithstand expected loads and use conditions without unsafe failure
• BBe made only from the heaviest possible metal regardless of need
• CNever be tested under load
• DIgnore user safety if the logo looks green

Which design choice best supports end-of-life sustainability?

• ADesigning for disassembly so parts can be reused or recycled
• BPermanently bonding all parts with no separation path and no recyclability
• CUsing only toxic coatings that prevent recycling
• DEncouraging disposal of intact working products after one use

A student proposes a bamboo-fibre casing for a small appliance used in humid Malaysian kitchens. Which evaluation is most complete under DSKP design factors?

• ACheck human safety/hygiene, function, strength in humidity, aesthetics and material susta…
• BJudge only by how trendy the bamboo label looks online
• CIgnore humidity and strength because bamboo is 'natural'
• DReject any renewable material automatically

Why does the Asas Kelestarian energy module classify coal as non-renewable while classifying biomass as renewable, even though both are burned as fuel?

• ACoal takes geological ages to form, whereas biomass can be regrown within a human plannin…
• BCoal releases carbon dioxide when burned, whereas biomass releases none at all
• CCoal must be imported into Malaysia, whereas biomass is always produced locally
• DCoal is used only in power stations, whereas biomass is used only in homes

Which energy source is renewable?

• ASolar photovoltaic generation
• BNatural gas from finite reservoirs
• CPetroleum for petrol engines
• DPeat burned as a one-time fuel stock

In a conventional thermal power station burning fossil fuel, chemical energy is ultimately converted mainly into:

• AElectrical energy delivered to the grid after heat → mechanical → generator stages
• BOnly chemical energy stored forever in ash
• COnly sound energy with no electricity
• DOnly hydraulic oil pressure in vehicle brakes

Why is electrical transmission at high voltage commonly used over long distances?

• AHigher voltage reduces current for a given power, lowering I²R losses in lines
• BHigher voltage always increases line losses for the same power
• CTransmission never needs transformers at either end
• DHigh voltage makes solar panels unnecessary worldwide

Which renewable generation idea is especially well matched to Malaysia's tropical climate and abundant sunshine?

• ASolar PV and solar-assisted systems
• BTidal barrages requiring large tidal ranges everywhere
• CGeothermal plants needing active volcanic fields in every state
• DArctic wind farms designed only for polar nights

Feed-in Tariff (FiT) concepts in renewable energy policy mainly aim to:

• APay eligible renewable generators a set tariff for electricity fed into the grid to encou…
• BBan all solar panels from Malaysian roofs
• CForce every vehicle to use only hydraulic propulsion
• DReplace water treatment with landfill disposal

Hydropower generation primarily converts which energy sequence?

• AGravitational potential energy of water → kinetic → mechanical turbine → electrical
• BNuclear binding energy → chemical → sound only
• CSolar PV electron excitation → coal combustion
• DCompressed air in FRL units → landfill gas only

Wind turbines convert the kinetic energy of moving air mainly into:

• ARotational mechanical energy then electrical energy in a generator
• BChemical energy stored as petrol
• COnly potential energy in elevated water reservoirs without rotation
• DOnly thermal energy for coal boilers

Compared with burning coal for the same electrical energy delivered, which statement about solar PV is most accurate in sustainability terms?

• ASolar PV avoids ongoing fuel combustion emissions during operation, though manufacturing…
• BSolar PV always emits more CO₂ during operation than coal plants
• CSolar PV requires continuous coal feedstock
• DSolar PV cannot produce direct current that inverters convert for grid use

Which statement correctly describes distribution of electricity to consumers?

• AAfter transmission, voltage is stepped down for safer local distribution to homes and ind…
• BConsumers always receive generation-plant voltage with no transformers
• CDistribution lines never use cables or poles
• DDistribution only applies to hydraulic excavators

Biomass energy is considered renewable when:

• AOrganic matter is replenished through sustainable growth and management cycles
• BAncient coal seams are mined faster than they form
• CCrude oil is refined into diesel only
• DUranium is fissioned in a reactor

A coastal community with strong, steady winds but limited flat land for large PV farms should prioritise feasibility studies for which option first?

• AWind generation matched to the local resource
• BCoal plants requiring imported fuel with no wind assessment
• COnly geothermal everywhere regardless of geology
• DBanning all electricity use

Which is a major environmental concern of continued reliance on fossil-fuel electricity?

• AGreenhouse gas and air-pollutant emissions from combustion
• BZero emissions under all operating conditions
• CAutomatic restoration of mined landscapes without management
• DElimination of the need for any energy policy

Photoelectric/photovoltaic conversion in solar cells primarily:

• AConverts light into electrical energy via semiconductor effects
• BConverts electricity into crude oil
• CStores wind as compressed hydraulic oil only
• DTreats sewage to potable standards alone

Which pairing of source and sustainability classification is correct?

• APetroleum — non-renewable; hydro — renewable
• BWind — non-renewable; coal — renewable
• CSolar — non-renewable; natural gas — renewable
• DCoal — renewable; petroleum — renewable

An inland highland area with heavy rainfall and steep valleys is evaluating sustainable electricity options. Which proposal best fits terrain and climate logic taught in Asas Kelestarian?

• AAssess small/medium hydro potential using elevation and rainfall
• BInstall only tidal turbines far from any sea
• CAssume desert-only CSP designs without sun or land data
• DRely solely on imported coal with no local resource study

An internal combustion engine (ICE) mainly converts chemical energy in fuel into:

• AHeat and then mechanical work to drive the vehicle
• BOnly electrical energy without any moving parts
• COnly gravitational potential in elevated water
• DOnly pneumatic FRL lubrication mist

In a four-stroke petrol engine cycle, the correct order of strokes is:

• AIntake, compression, power (combustion), exhaust
• BExhaust, power, intake, compression
• CCompression, exhaust, intake, power
• DPower, intake, exhaust, compression

Energy-efficient vehicles (EEV) in Asas Kelestarian discussions commonly include:

• AElectric, hybrid and alternative-fuel vehicles that reduce fuel use or emissions
• BOnly steam locomotives with no efficiency targets
• COnly vehicles that must burn more fuel per kilometre
• DOnly vehicles forbidden from regenerative braking concepts

A hybrid vehicle typically combines:

• AAn internal combustion engine with an electric motor/battery system
• BOnly a pneumatic cylinder with no electrical storage
• COnly a landfill incinerator onboard
• DTwo coal boilers and no drivetrain

Hydraulic control systems transmit power primarily using:

• APressurised liquid (usually oil) acting on actuators such as cylinders
• BOnly ambient wind with no fluid
• COnly untreated sewage as the working fluid in excavators
• DOnly sunlight inside the pump housing

Which component in a basic hydraulic circuit stores and helps cool the hydraulic oil?

• AReservoir (tank)
• BCombustion chamber spark plug
• CSolar PV inverter
• DSanitary landfill liner

The hydraulic pump's main role is to:

• AMove oil and create the pressure/flow needed to drive actuators
• BFilter sewage to potable water
• CGenerate wind for turbines
• DCompost organic solid waste

A directional control valve in a hydraulic circuit mainly:

• ARoutes oil flow to extend or retract a cylinder (change actuator direction)
• BIncreases solar irradiance on PV modules
• CDefines Act 672 waste categories
• DSets SPM grade boundaries

A workshop needs an actuator that clamps light components quickly and vents harmlessly if a seal leaks. Why is a pneumatic system preferred over a hydraulic one here?

• AIts working fluid is compressed air, which gives fast light-duty actuation and leaks away…
• BIt develops far higher clamping force per unit area than any hydraulic circuit
• CIt needs no compressor, pipes or control valves, so installation costs nothing
• DIt holds position more rigidly under load because air does not compress

An FRL (filter-regulator-lubricator) unit in pneumatics is used to:

• AClean air, set pressure and provide lubrication before actuators
• BChlorinate drinking water at a treatment plant
• CLine sanitary landfills
• DStep up national grid transmission voltage

Compared with hydraulics for the same educational comparison, pneumatics typically provide:

• AFaster, cleaner motion with lower force capability
• BAlways higher force than oil hydraulics for identical actuator size
• CDirtier operation than oil leaks by design
• DNo need for any compressor or air supply

A basic electrical control circuit for motor starting typically distinguishes:

• AMain (power) circuit and control circuit
• BOnly landfill cells and leachate pipes
• COnly GBI indoor air credits
• DOnly FiT payment schedules

Which application best matches high-force hydraulic actuation?

• AExcavator boom and arm cylinders lifting heavy loads
• BSoft-close laptop hinge needing only tiny force
• CSmartphone vibration motor only
• DLED indicator lamp lighting

Which application best matches pneumatic actuation?

• AAutomated bus door operation using compressed air
• BHolding a multi-tonne press load continuously with oil preference ignored for safety teac…
• CGenerating grid electricity from a dam turbine alone
• DCoagulation dosing in a water plant alone

Battery electric vehicles (BEVs) primarily use:

• AElectric motors powered by onboard batteries with no onboard petrol combustion for propul…
• BOnly four-stroke ICE without any electric drive
• COnly hydraulic wheel motors fed by diesel oil lines as the sole propulsion definition
• DOnly pneumatic propulsion from cabin air vents

Alternative fuels for vehicles (within EEV discussions) are pursued mainly to:

• AReduce dependence on conventional petrol/diesel and cut harmful emissions
• BGuarantee higher NOx and particulate emissions in all cases
• CEliminate the need for any vehicle safety standards
• DReplace public transport planning entirely

Pressure in a hydraulic cylinder relates to force by which relationship (conceptual form used in school circuits)?

• AForce ≈ pressure × piston area
• BForce ≈ pressure ÷ piston area only as the sole universal law with no area term ever
• CForce is independent of pressure and area always
• DForce equals only electrical voltage