Maharashtra HSC Electronics and Hardware Technician (NSQF E5) case studies
Maharashtra HSC Electronics and Hardware Technician (NSQF E5) · Put your knowledge to work in context.
The Maharashtra HSC Vocational Electronics and Hardware Technician (NSQF Level 5) is a state-board higher secondary vocational credential that pairs general HSC subjects with a job-oriented electronics trade. It suits students who want a Class 12 qualification plus hands-on skills for work as a service technician, assembly-line operator, field support engineer or self-employed repair professional, and it also gives a base for further NSQF levels or diploma study. The Maharashtra HSC Electronics and Hardware Technician (NSQF E5) case studies are 5 cases and about 5,057 words.
1Shop feeder overload, voltage sag and a high-resistance earth
A two-technician repair shop in Nashik runs from a single-phase 230 V domestic connection. The energy meter and main switch are 60 m from the shop, and the entire shop is fed by one 2.5 mm² aluminium twin-core cable in conduit, protected by a 16 A Type B MCB.
967 words, about 5 min2Hand-soldering defects on a lead-free 0805 and SOIC batch
A small Pune contract-assembly unit hand-solders 200 mixed boards a week. Each board carries forty 0805 resistors and capacitors, two SOIC-8 ICs and a 4-pin header, on an FR-4 board with a lead-free SAC305 HASL finish.
962 words, about 5 min3A pump controller with a floating input and no freewheel diode
A trainee has built 12 identical pump-control boards around an ATmega328P running at 5 V, 16 MHz. Each board drives a 5 V relay with a 70 Ω coil (about 71 mA) through a BC547 whose base is connected to PD6 via a 1 kΩ resistor.
1,039 words, about 5 min4New desktop build with a DRAM debug LED and a PSU upgrade question
A shop assembles a desktop for a customer: an Intel i5-12400 (LGA1700, 65 W base, about 117 W at PL2) on a B660M board with four DIMM slots, 2 × 8 GB DDR4-3200 fitted in slots A1 and A2, a GTX 1660 Super (125 W, one 8-pin) in the top PCIe slot, a 1 TB NVMe SSD, and a 550 W 80+ Bronze PSU whose single 12 V rail is rated 42 A. On first power-on the fans spin, the DRAM debug LED stays lit and there is no video; the board has no buzzer.
986 words, about 5 min5CCTV power distribution, voltage drop and battery backup
A shop installs a four-camera CCTV system in a hotel corridor. Each fixed dome draws 500 mA at 12 V in day mode and 700 mA with IR on; the DVR draws 2 A at 12 V.
1,103 words, about 6 min