THDC JE case studies
THDC JE · Put your knowledge to work in context.
The THDC Junior Engineer (JE) recruitment examination is the screening and selection test used by THDC India Limited, a public-sector hydroelectric power producer, when it hires junior engineers into its technical streams. It is aimed at diploma or degree holders in civil, electrical, mechanical, or electronics and instrumentation engineering who want a staff-level technical role in hydro generation, construction, or plant O&M. The THDC JE case studies are 5 cases and about 3,826 words.
1Stilling Basin Raft Pour: Water Added at the Hopper and a Cement Blame Claim
A 60 m³ raft pour for the stilling basin of a barrage is under way. The approved M25 mix design specifies 340 kg/m³ of OPC 43 grade cement at a water–cement ratio of 0.45, with a retarder dosed at the batching plant.
797 words, about 4 min2Power Factor Penalty at a 33/11 kV Construction Township Substation
A 33/11 kV township substation serving a construction colony has a recorded maximum demand of 4.60 MVA at 0.78 lagging, measured on 30-minute integration, on a 5 MVA, 33/11 kV transformer. The utility tariff penalises any monthly average power factor below 0.90, and the regulator's supply code requires 0.95 or better at the point of connection.
624 words, about 3 min3Dewatering Pump Selection: System Head, NPSH and the Cost of a Small Pipe
A foundation pit for a barrage cut-off wall is being dewatered to keep the excavation dry. The sump water surface is 12.0 m below the outfall invert, and the pump is mounted on a platform 4.0 m above the sump water surface.
731 words, about 4 min4Clearwell Level Transmitter Reading 0.60 m Low and Pumping on Manual
A 4–20 mA two-wire differential-pressure level transmitter measures water in a 4.0 m deep clearwell. It is ranged 0–4.0 m and mounted with a dry reference leg open to atmosphere; the high side is connected to a bottom tapping on the well.
841 words, about 4 min5Twenty-Six Days Late: Rain Extension, Liquidated Damages and an Idle-Plant Claim
A civil package worth ₹4.20 crore (excluding GST) for a barrage approach channel was due for completion on 30 June. The work involved 7,500 m³ of concrete at a planned output of 25 m³/day using a 40-person crew.
833 words, about 4 min