SPM Electrical & Electronics Engineering Studies case studies
SPM Electrical & Electronics Engineering Studies · Put your knowledge to work in context.
SPM Electrical & Electronics Engineering Studies is a upper-secondary school subject in Malaysia's Sijil Pelajaran Malaysia examination system, taken by Form 4 and Form 5 students in the electrical and electronics engineering option of the KSSM curriculum. It suits candidates who intend to progress to a technical diploma, an engineering degree, or a vocational career in installation, maintenance, electronics or automation. The SPM Electrical & Electronics Engineering Studies case studies are 5 cases and about 3,759 words.
1Bench Power Supply Overload and Plug Fuse Selection
During a school open-day build, a student assembles a 12 V, 1.8 A lamp test rig. The 12 V DC adaptor is marked 12 V, 1.5 A.
792 words, about 4 min2Parallel LED Modification on a Battery Indicator
A student designs a 12 V battery-powered LED indicator. The chosen LED has a forward voltage of 2.0 V at 20 mA.
701 words, about 4 min3Relay Driver Failure and Missing Flyback Diode
A student uses a 5 V microcontroller output to switch a 12 V relay. The relay coil resistance is 400 Ω and is connected between the +12 V supply and the collector of an NPN transistor; the emitter is grounded.
762 words, about 4 min4Workshop Motor Cable Drop and Breaker Upsizing
A workshop adds a 2.2 kW, 240 V single-phase induction motor driving a bench grinder. The motor is 35 m of cable run from the distribution board, wired in 2.5 mm² copper conductors in PVC conduit.
766 words, about 4 min5Regulator Substitution, Fuse Omission and Leaded Solder in a School Build
A school team is building a sound-level indicator for a science exhibition. The circuit runs from a 9 V alkaline battery (rated 550 mAh) through a 7805 linear regulator to a sensor module that draws 20 mA at 5 V.
738 words, about 4 min