GATE AG case studies
GATE AG · Put your knowledge to work in context.
GATE 2025 (Graduate Aptitude Test in Engineering) is a national-level examination that primarily tests the comprehensive understanding of various undergraduate subjects in Engineering/Technology/Architecture/Science/Commerce/Arts/Humanities. It is organised by Indian Institute of Technology Roorkee (IITR) and conducted by IISc Bengaluru and seven IITs - IIT Bombay, IIT Delhi, IIT Guwahati, IIT Kanpur, IIT Kharagpur, IIT Madras and IIT Roorkee - on behalf of the National Coordination Board (NCB), Department of Higher Education, Ministry of Education, Government of India. The GATE AG case studies are 5 cases and about 3,353 words.
1Three-Bottom Plough Behind a 45 hp Tractor: Power, Ballast or a Bigger Machine?
A 45 hp (33.6 kW) two-wheel-drive tractor weighing 2,000 kg carries 70% of its weight on the rear axle and pulls a three-bottom mouldboard plough, each bottom 35 cm wide. The owner wants 22 cm depth at 5 km/h on 6 ha/day in a sandy clay loam where soil resistance is 0.55 kg/cm².
669 words, about 3 min2A Silting Distributary: Steepen the Slope or Line the Canal?
A 250 ha rice command is served by a 3 km unlined trapezoidal distributary with side slopes 1.5:1, Manning n = 0.025 and a bed slope of 1 in 4000, built with a 1.4 m bed width to carry 1.0 m³/s at 0.90 m normal depth. After two seasons the tail reach has silted about 25 cm and head-reach farmers over-irrigate while the tail receives almost nothing.
645 words, about 3 min3Sizing a Gully-Plug Check Dam Above a 3 ha Paddy
A 12 ha micro-watershed in a semi-arid district is to be treated with a gully-plug check dam. Soils are sandy loam with a curve number of 78 under AMC II.
647 words, about 3 min4A Paddy Dryer Facing 24% Moisture After Unseasonal Rain
A cooperative's paddy dryer is rated at 20 t per batch, drying from 20% to 14% (wet basis) in 8 hours using air heated to 60°C. Unseasonal rain brought the harvest in at 24%, and 90 t is waiting under tarpaulins.
682 words, about 3 min5A 60-Cow Biogas Plant That Stalls in Winter
A 60-cow crossbred dairy produces 12 kg of dung per cow per day at 16% total solids, of which 80% is volatile solids. The farm plans a fixed-dome biogas plant for 12 m³/day of cooking gas plus a 2 kW generator set consuming about 0.75 m³ of biogas per kWh.
710 words, about 4 min