Assistant Engineer

Securing a position as an Assistant Engineer (AE) through the Sindh Public Service Commission (SPSC) is a pivotal milestone for any engineering graduate in Pakistan. This role is not merely a government job; it is a gateway to high-level infrastructure management, policy implementation, and public service. Given the rigorous nature of SPSC competitive examinations, the selection process demands more than just rote memorization—it requires a deep, analytical grasp of core engineering principles, technical standards, and logical reasoning. At MM Online, we have curated this specialized assessment to bridge the gap between theoretical academic knowledge and the practical, high-stakes environment of competitive testing. Mastering these topics is essential, as the SPSC syllabus often mirrors the depth found in ECAT and HEC-level examinations, requiring a candidate to maintain a sharp focus on both fundamental technical concepts and current engineering trends. Our strategic approach to your preparation prioritizes "conceptual fluency." Rather than chasing thousands of disjointed MCQs, focus your efforts on understanding the underlying mechanics of civil, electrical, or mechanical engineering disciplines as they apply to provincial infrastructure projects. Pay close attention to standard codes, safety regulations, and analytical problem-solving techniques. This quiz serves as a diagnostic tool to identify your proficiency gaps, ensuring that your study hours are spent efficiently. Approach this assessment with the mindset of a professional engineer, as precision and accuracy are the hallmarks of success in the SPSC arena.

Practice questions

  1. The minimum diameter of a sewer pipe for domestic use is usually:
    • 100 mm
    • 150 mm
    • 200 mm
    • 250 mm
  2. The main purpose of a clear well in a water treatment plant is:
    • Sedimentation
    • Storage of treated water before distribution
    • Coagulation
    • Chlorination
  3. In wastewater treatment, trickling filters are primarily used for:
    • Physical sedimentation
    • Biological treatment of organic matter
    • Filtration
    • Disinfection
  4. The Reynolds number determines whether the flow in a pipe is:
    • Laminar or turbulent
    • Subcritical or supercritical
    • Free or forced
    • Steady or unsteady
  5. The minimum slope of a sewer pipe should ensure:
    • Self-cleansing
    • Maximum velocity
    • Low energy loss
    • Easy maintenance
  6. The main chemical used for water softening is:
    • Alum
    • Lime
    • Chlorine
    • Sodium chloride
  7. The standard provision for cover in water distribution pipes is to:
    • Protect against corrosion and mechanical damage
    • Prevent water loss
    • Increase flow velocity
    • Enhance chlorination
  8. The typical maximum velocity of flow in sewers to avoid scouring is:
    • 0.5 m/s
    • 3 m/s
    • 5 m/s
    • 10 m/s
  9. In reinforced concrete, shrinkage cracks are primarily due to:
    • Excessive load
    • Loss of water and volume changes
    • Corrosion of steel
    • Poor compaction
  10. The main purpose of a flocculation basin in water treatment is:
    • Settle heavy particles
    • Mix coagulant slowly to form flocs
    • Chlorinate water
    • Aerate water
  11. The minimum factor of safety for retaining walls is generally:
    • 1.2
    • 1.5
    • 2.0
    • 2.5
  12. The unit of hydraulic conductivity in SI system is:
    • m/s
    • m²/s
    • kg/m²
    • N/m²
  13. The term “hard water” refers to water with high concentration of:
    • Sodium and potassium
    • Calcium and magnesium
    • Chloride and sulfate
    • Iron and manganese
  14. The purpose of a weir in hydraulic structures is to:
    • Measure flow rate
    • Filter water
    • Increase pressure
    • Store water
  15. The maximum permissible iron concentration in drinking water is:
    • 0.1 mg/L
    • 0.3 mg/L
    • 0.5 mg/L
    • 1 mg/L
  16. The minimum depth of groundwater wells for domestic supply is usually:
    • 5–10 m
    • 15–30 m
    • 50–100 m
    • 100–200 m
  17. The main purpose of a surge tank in water distribution systems is:
    • Reduce head loss
    • Control water hammer and pressure surges
    • Filter water
    • Chlorinate water
  18. The velocity of flow in open channel is usually computed using:
    • Darcy-Weisbach equation
    • Manning’s equation
    • Bernoulli’s equation
    • Hazen-Williams formula
  19. The main reason for chlorination at the end of the water treatment process is:
    • Remove turbidity
    • Disinfect water for safe consumption
    • Reduce hardness
    • Neutralize pH
  20. The typical maximum acceptable turbidity in treated water is:
    • 1 NTU
    • 5 NTU
    • 10 NTU
    • 20 NTU
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