The UPSSSC Boring Technician Mains (Advt 04-Exam/2026) is 120 MCQ in 90 minutes — 60 marks are trade-specific (Tubewell/Fitter/Wireman/Turner). This one section decides selection. The remaining 60 marks split across Hindi, Reasoning/Maths, GK, and PET-linked questions. This guide covers all five sections with practice questions and a 2-month schedule.
Exam Pattern Quick Reference
| Section | Questions | Marks | Priority |
|---|---|---|---|
| Trade-Specific (Tubewell / Fitter / Wireman / Turner) | 60 | 60 | ⭐⭐⭐ Highest — 50% of marks |
| Hindi Knowledge & Writing Ability | 15 | 15 | ⭐⭐ Medium |
| General Intelligence & Elementary Maths | 15 | 15 | ⭐⭐ Medium |
| General Knowledge | 15 | 15 | ⭐⭐ Medium |
| PET-linked Questions | 15 | 15 | ⭐ Qualifying-linked |
| Total | 120 | 120 | 90 min / 0.25 neg marking |
Negative Marking Strategy
| Confidence Level | Action | Expected Value |
|---|---|---|
| Very confident (90%+) | Always attempt | +0.875 per Q |
| Moderate (65%) | Attempt — positive EV | +0.563 per Q |
| Low (40%) | Skip — borderline | +0.25 barely positive |
| Pure guess (25%) | Skip — zero EV | 0 net gain |
Section 1: Trade-Specific — 60 Marks
Questions come from the trade of your ITI certificate. Prepare your specific trade deeply. Below are practice questions for all four applicable trades.
Tubewell Operator Trade
Q1. What is a "strainer" (screen) in a tubewell?
(a) A device that measures water flow (b) A perforated pipe section that allows water entry while blocking sand (c) The motor cover (d) A water storage tank
Answer: (b) — The screen/strainer at the bottom of a tubewell casing allows groundwater to enter while preventing sand and gravel from entering the pump system.
Q2. Which type of pump is used in deep tubewells where the water table is more than 8 metres below the surface?
(a) Centrifugal pump (b) Reciprocating pump (c) Submersible pump (d) Gear pump
Answer: (c) Submersible pump — Submersible pumps are placed directly in the water and can lift water from depths beyond the suction limit of centrifugal pumps (~8m).
Q3. The "water table" refers to:
(a) A table used for water measurement (b) The upper boundary of the zone of groundwater saturation (c) The capacity of a water tank (d) The level of water in a river
Answer: (b) — The water table is the top surface of the zone where all pore spaces in soil/rock are saturated with groundwater.
Q4. What is "surging" in tubewell development?
(a) Sudden flooding of a tubewell (b) A technique to develop a tubewell by alternately pushing and pulling water to remove fine particles from the screen (c) Installing a new tubewell casing (d) Testing pump pressure
Answer: (b) — Surging develops the tubewell by cleaning fine particles from around the screen, increasing water yield and preventing screen clogging.
Q5. HDPE pipes used in irrigation are preferred over GI pipes because:
(a) They are heavier (b) They are corrosion-resistant, lightweight, and have longer service life (c) They are cheaper than all alternatives (d) They have higher friction losses
Answer: (b) — HDPE (High Density Polyethylene) pipes resist corrosion, chemicals, and UV; they are lightweight and typically last 50+ years.
Q6. One Horse Power (HP) is equal to:
(a) 476 Watts (b) 746 Watts (c) 1000 Watts (d) 550 Watts
Answer: (b) 746 Watts — 1 HP = 746 W. This is essential for sizing tubewell motors.
Fitter Trade
Q7. Which tool is used to cut internal (female) threads in a hole?
(a) Die (b) Tap (c) Reamer (d) Drill bit
Answer: (b) Tap — A tap cuts internal threads. A die cuts external (male) threads on a rod or bolt.
Q8. A Vernier caliper can measure to an accuracy of:
(a) 0.1 mm (b) 0.5 mm (c) 0.02 mm (d) 1.0 mm
Answer: (c) 0.02 mm — Standard Vernier calipers have 0.02mm least count. Micrometers measure to 0.01mm.
Q9. In which type of fit does the shaft diameter always remain larger than the hole diameter?
(a) Clearance fit (b) Transition fit (c) Interference fit (d) Slip fit
Answer: (c) Interference fit — In interference fit (also called press fit), the shaft is always larger than the hole, requiring force to assemble.
Q10. Which type of bearing is most commonly used for high-speed rotating shafts with radial loads?
(a) Plain bush bearing (b) Ball bearing (c) Needle bearing (d) Thrust bearing
Answer: (b) Ball bearing — Ball bearings handle radial loads at high speeds with low friction.
Q11. The number of teeth per inch (TPI) on a hacksaw blade for cutting mild steel is typically:
(a) 8 TPI (b) 14 TPI (c) 32 TPI (d) 6 TPI
Answer: (b) 14 TPI — 14 TPI is used for general mild steel cutting. Higher TPI (24–32) is for thin sheets and tubing; lower TPI (8–10) is for soft metals like aluminium.
Wireman Trade
Q12. According to Ohm's Law, if resistance is doubled and voltage stays the same, current will:
(a) Double (b) Stay same (c) Halve (d) Become zero
Answer: (c) Halve — I = V/R. If R doubles, I becomes V/(2R) = half the original current.
Q13. In a standard Indian domestic supply, the voltage between Phase and Neutral is:
(a) 415 V (b) 440 V (c) 230 V (d) 110 V
Answer: (c) 230 V — Single-phase supply in India is 230V (phase to neutral). Three-phase line-to-line voltage is 415V.
Q14. What does an MCB (Miniature Circuit Breaker) protect against?
(a) Voltage fluctuations only (b) Overload and short circuit currents (c) Earth leakage only (d) Power factor correction
Answer: (b) Overload and short circuit currents — MCB provides overcurrent protection. ELCB/RCD protects against earth leakage (shock hazard).
Q15. In a Star (Y) connection of a three-phase system, the relationship between line voltage (VL) and phase voltage (VPh) is:
(a) VL = VPh (b) VL = √3 × VPh (c) VL = 3 × VPh (d) VL = VPh/√3
Answer: (b) VL = √3 × VPh — In star connection, line voltage = √3 × phase voltage (≈ 1.732 × phase voltage).
