RBSE SS Voc Electrical and Elect case studies
RBSE SS Voc Electrical and Elect · Put your knowledge to work in context.
The RBSE Senior Secondary Vocational Examination in Electrical and Electronics is a Class 12 trade credential awarded under the Rajasthan Board of Secondary Education's vocational stream. It is designed for students who want a school-leaving qualification that also signals hands-on competence in the electrical and electronics trades, and it suits learners heading either into employment, an apprenticeship, or further technical study such as a diploma or ITI-adjacent pathway. The RBSE SS Voc Electrical and Elect case studies are 5 cases and about 2,891 words.
1Twelve-Volt Floodlight Feeder: When a Bigger Power Supply Is Not the Fix
A workshop extension has six 12 V, 60 W LED floodlights fed from one 12 V, 100 W switch-mode power supply. The feed is a single 2.5 mm² copper two-core cable, 18 m from the power supply to the first and only connection point, where all six floodlights are connected in parallel.
603 words, about 3 min2A Geyser That Trips the 30 mA RCCB Only Under Load
An electrician attends a first-floor flat where the 30 mA RCCB at the consumer unit trips only when the 3 kW storage geyser is switched on. Sometimes it holds for several minutes; sometimes it trips immediately.
601 words, about 3 min3Star-Delta Changeover Trip on a 7.5 kW Borewell Motor
A 7.5 kW, 415 V, 14.8 A IE3 induction motor drives a borewell pump through a star-delta starter. The overload relay is set to 14.8 A and the ambient temperature is 42 °C.
566 words, about 3 min4A 7805 Supply That Drops Out at 0.4 A
A technician builds a 5 V, 0.4 A bench supply using a 230 V/9-0-9 V, 500 mA transformer, a bridge rectifier, a 1000 µF 25 V reservoir capacitor and a 7805 regulator bolted to a 6 °C/W heatsink. At 0.4 A load the output is 4.6 V with about 1.8 V ripple.
580 words, about 3 min5Zero Amps on a Running 24 V DC Pump
A trainee is called to a 24 V DC, 8 A pump supplied by a 24 V, 10 A switch-mode power supply. The pump runs but delivers less water than before.
541 words, about 3 min