GATE EY case studies
GATE EY · Put your knowledge to work in context.
GATE (Graduate Aptitude Test in Engineering) is a computer based examination conducted jointly by the Indian Institute of Science (IISc), Bangalore and Indian Institutes of Technology (IITs) on behalf of Ministry of Education (MoE), Government of India. GATE tests the comprehensive understanding of the candidates in various undergraduate subjects in Engineering/Technology/Architecture and post-graduate level subjects in Science. The GATE EY case studies are 5 cases and about 4,082 words.
1Cavitation After Feed Pre-heating on a 60 m³/h Transfer Pump
A chemical plant transfers demineralised water from an open atmospheric tank to a reactor through a centrifugal pump rated at 60 m³/h. The pump centreline sits 0.50 m above the tank's minimum operating level.
811 words, about 4 min2Fatigue Cracking at a Vibrating-Screen Bracket Fillet
A vibrating-screen manufacturer welds a 50 mm wide × 12 mm thick flat bracket to a support frame; the bracket carries a bearing housing on an 80 mm overhang. Field strain measurements show the vertical load on the bracket fluctuates between 0.5 kN and 2.5 kN at 24 Hz, in phase with the screen drive.
856 words, about 4 min3Fouled Oil Cooler that Cannot Meet its Outlet Specification
A refinery uses a counter-flow shell-and-tube exchanger to cool 1.5 kg/s of hot oil (cp = 2.2 kJ/kg·K) from 160 °C to a required 110 °C before storage. Cooling water enters the tube side at 25 °C at 1.2 kg/s (cp = 4.18 kJ/kg·K).
813 words, about 4 min4Roller Failure in a Clean-in-Place Bottle-Handling Line
A dairy plant's bottle-orienting machine uses a 60 mm diameter guide roller moulded from unreinforced PA66. The roller carries a steady 400 N radial belt force at 70 °C continuously, and the line is cleaned in place with 80 °C caustic solution at pH 12 for 20 minutes twice a day, plus 121 °C saturated-steam sanitisation for 30 minutes each weekend.
835 words, about 4 min5Shortening the Retort Hold on a Low-Acid Canned Soup
A cannery packs a low-acid soup (pH 6.2, aw 0.98) in 400 g cans and processes them in a saturated-steam retort at 121.1 °C. The scheduled process, filed fifteen years ago, specifies a 25-minute hold after come-up; the original validation gave a cold-point F0 of 3.6 min with z = 10 °C and a reference D121.1 of 0.21 min for Clostridium botulinum.
767 words, about 4 min