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Interactive Quiz: Building Services (Unit-VIII) - 50 Questions

Unit-VIII: Building Services (50 Questions Quiz)

Subject Code: 509

📚 Syllabus Covered:
Water Supply & Sewage Disposal, Mechanical Systems – Pumps & Motors, Electrical Systems – Generation & Distribution, Ventilation & Lighting, Air Conditioning – Principles, systems & applications, Vertical Transportation systems, Fire Hazards, Safety & Design Regulations, Acoustics, Building Management Systems, Renewable Energy, Rain water Harvesting, and Storm Water Management.

Click '👁️ Show Answer' below each question to check your responses!

1. The compressor of a normal split AC is generally located in the

  1. outdoor unit
  2. indoor air filter
  3. diffuser
  4. thermostat
👁️ Show Answer

Answer: A (Outdoor unit)

2. Light falling on a unit area is called

  1. luminous flux
  2. illuminance
  3. frequency
  4. luminance only
👁️ Show Answer

Answer: B (Illuminance)

3. In stack ventilation, warm indoor air generally leaves through

  1. higher openings
  2. underground drains
  3. water pipes
  4. electrical conduits
👁️ Show Answer

Answer: A (Higher openings)

4. The liquid leaving a septic tank is called

  1. sludge
  2. scum
  3. effluent
  4. potable water
👁️ Show Answer

Answer: C (Effluent)

5. Which sequence correctly represents a simple building water-supply arrangement?

  1. Overhead tank → pump → sump → tap
  2. Sump → pump → overhead tank → fixtures
  3. Pump → fixture → sump → tank
  4. Fixture → sump → pump → overhead tank
👁️ Show Answer

Answer: B (Sump → pump → overhead tank → fixtures)

6. Which is an example of active fire protection?

  1. Fire-resistant wall
  2. Fire door
  3. Compartmentation
  4. Automatic sprinkler
👁️ Show Answer

Answer: D (Automatic sprinkler)

7. Class A fire involves mainly

  1. solid combustible materials
  2. gases only
  3. metals only
  4. cooking oil only
👁️ Show Answer

Answer: A (Solid combustible materials)

8. The main purpose of a trap is to

  1. increase water pressure
  2. prevent foul gases from entering a room
  3. pump sewage
  4. store wastewater
👁️ Show Answer

Answer: B (Prevent foul gases from entering a room)

9. Solar thermal primarily produces

  1. heat
  2. electrical current directly from a PV cell
  3. sound
  4. sewage
👁️ Show Answer

Answer: A (Heat)

10. Long-distance bulk transfer of electrical energy is called

  1. generation
  2. transmission
  3. earthing
  4. isolation
👁️ Show Answer

Answer: B (Transmission)

11. One millimetre of rainfall over one square metre gives

  1. 1 litre
  2. 10 litres
  3. 100 litres
  4. 1000 litres
👁️ Show Answer

Answer: A (1 litre)

12. A room has volume 100 m³ and receives 200 m³/h of air. The ACH is

  1. 0.5
  2. 1
  3. 2
  4. 200
👁️ Show Answer

Answer: C (2 ACH)

13. Compared with small single-phase motors, three-phase motors are especially suitable for

  1. larger power applications
  2. only hand-operated devices
  3. sanitary fixtures
  4. water seals
👁️ Show Answer

Answer: A (Larger power applications)

14. Which of the following statements is INCORRECT?

  1. A pump can be used to move water.
  2. A motor converts electrical energy into mechanical energy.
  3. A sprinkler is used for fire protection.
  4. Acoustics deals mainly with electrical power distribution.
👁️ Show Answer

Answer: D (Acoustics deals mainly with electrical power)

15. The standard unit of measurement for sound level (acoustics) in a building is

  1. Hertz
  2. Decibel (dB)
  3. Watt
  4. Lumen
👁️ Show Answer

Answer: B (Decibel (dB))

16. One lux is equal to

  1. 1 candela/m²
  2. 1 lumen/m²
  3. 1 watt/m²
  4. 1 lumen/m²
👁️ Show Answer

Answer: B (1 lumen/m²)

17. In a two-pipe system

  1. soil and waste discharge use separate pipes
  2. only one main discharge pipe is provided
  3. no ventilation is possible
  4. wastewater is not removed
👁️ Show Answer

Answer: A (Soil and waste discharge use separate pipes)

18. In the cosine law, angle is measured between the light ray and

  1. the normal to the surface
  2. the horizontal only
  3. the lamp filament
  4. the floor edge
👁️ Show Answer

Answer: A (The normal to the surface)

19. Detention means

  1. temporary storage of storm water
  2. permanent drinking-water storage only
  3. immediate disposal with no storage
  4. sewage treatment
👁️ Show Answer

Answer: A (Temporary storage of storm water)

20. The primary purpose of building services is to

  1. increase only the strength of a building
  2. make the building functional, safe and comfortable
  3. reduce the dead load of a structure
  4. increase the bearing capacity of soil
👁️ Show Answer

Answer: B (Make the building functional, safe and comfortable)

21. Which one of the following pairs is INCORRECT?

  1. Float valve - Controls tank filling
  2. Foot valve - Prevents loss of water from suction pipe
  3. Check valve - Prevents reverse flow
  4. Globe valve - Prevents all reverse flow
👁️ Show Answer

Answer: D (Globe valve – Prevents all reverse flow)

22. Which of the following does NOT normally require a fan?

  1. Natural ventilation
  2. Mechanical exhaust
  3. Mechanical supply
  4. Local exhaust
👁️ Show Answer

Answer: A (Natural ventilation)

23. Recharge pits and trenches are used mainly to

  1. encourage groundwater recharge
  2. increase surface flooding
  3. produce sewage
  4. prevent all infiltration
👁️ Show Answer

Answer: A (Encourage groundwater recharge)

24. The total quantity of visible light emitted by a light source per unit time is called:

  1. Luminance
  2. Luminous flux
  3. Illuminance
  4. Luminous intensity
👁️ Show Answer

Answer: B (Luminous flux)

25. Hydraulic lifts are more commonly associated with

  1. high-rise buildings
  2. low-rise applications
  3. railway signalling systems
  4. escalator systems
👁️ Show Answer

Answer: B (Low-rise applications)

26. The basic principle of rainwater harvesting is to

  1. capture rain where it falls
  2. discharge all rain immediately to sewer
  3. increase evaporation
  4. prevent all infiltration
👁️ Show Answer

Answer: A (Capture rain where it falls)

27. Which of the following is a renewable energy source?

  1. Coal
  2. Solar energy
  3. Petroleum
  4. Natural gas
👁️ Show Answer

Answer: B (Solar energy)

28. Which room commonly uses exhaust ventilation?

  1. Toilet
  2. Foundation
  3. Underground footing
  4. Water tank only
👁️ Show Answer

Answer: A (Toilet)

29. Consider the following statements:
1. Natural ventilation may occur due to wind.
2. Stack effect results from air-density differences.
3. Cross ventilation can occur through suitably placed openings.
Which are correct?

  1. 1 only
  2. 1 and 2 only
  3. 2 and 3 only
  4. 1, 2 and 3
👁️ Show Answer

Answer: D (1, 2 and 3)

30. In a building, drainage mainly carries:

  1. Fresh water into the building
  2. Wastewater out of the building
  3. Electricity to appliances
  4. Fresh air into rooms
👁️ Show Answer

Answer: B (Wastewater out of the building)

31. Which pipe normally carries discharge containing human excreta?

  1. Waste pipe
  2. Soil pipe
  3. Vent pipe
  4. Overflow pipe
👁️ Show Answer

Answer: B (Soil pipe)

32. A catch basin may help collect

  1. storm runoff and sediment
  2. indoor air
  3. electrical energy
  4. hot water
👁️ Show Answer

Answer: A (Storm runoff and sediment)

33. Which is NOT a basic purpose of rainwater harvesting?

  1. Water storage
  2. Groundwater recharge
  3. Reduction of useful water availability
  4. Better use of rainfall component
👁️ Show Answer

Answer: C (Reduction of useful water availability)

34. A motor converts

  1. Mechanical energy into electrical energy
  2. Electrical energy into mechanical energy
  3. Heat energy into electrical energy
  4. Hydraulic energy into mechanical energy
👁️ Show Answer

Answer: B (Electrical energy into mechanical energy)

35. Electric current is measured in

  1. Volt
  2. Ampere
  3. Watt
  4. Hertz
👁️ Show Answer

Answer: B (Ampere)

36. Ventilation of a drainage system helps to

  1. Increase water hardness
  2. Maintain trap seals and remove foul gases
  3. Increase electrical voltage
  4. Reduce pump speed
👁️ Show Answer

Answer: B (Maintain trap seals and remove foul gases)

37. Which of the following is NOT listed as a possible destination for surface runoff harvesting?

  1. Storage pond
  2. Recharge pit
  3. Recharge trench
  4. Sewage treatment plant
👁️ Show Answer

Answer: D (Sewage treatment plant)

38. Which combination is correctly matched?

  1. Acoustics - wastewater disposal
  2. Ventilation - electricity generation
  3. BMS - central monitoring and control
  4. Lift - rainwater recharge
👁️ Show Answer

Answer: C (BMS – central monitoring and control)

39. Which pair is incorrectly matched?

  1. Class A - solids
  2. Class B - liquids
  3. Class C - gases
  4. Class D - cooking oils
👁️ Show Answer

Answer: D (Class D – cooking oils) *(Note: Class D is for combustible metals, Class K/F is for cooking oils)*

40. A gutter is normally provided to

  1. collect runoff from roof edges
  2. carry sewage
  3. filter drinking water
  4. store groundwater
👁️ Show Answer

Answer: A (Collect runoff from roof edges)

41. A hydro-pneumatic system mainly provides

  1. wastewater treatment
  2. controlled pressurised water supply
  3. natural ventilation
  4. electrical protection
👁️ Show Answer

Answer: B (Controlled pressurised water supply)

42. A bioswale is

  1. a vegetated storm-water channel
  2. a lift component
  3. a water heater
  4. a fire extinguisher
👁️ Show Answer

Answer: A (A vegetated storm-water channel)

43. The pipe carrying water downward from an overhead tank is called

  1. rising main
  2. soil pipe
  3. down-take pipe
  4. vent pipe
👁️ Show Answer

Answer: C (Down-take pipe)

44. Which pipe material is commonly suitable for both hot and cold-water plumbing?

  1. Ordinary PVC only
  2. CPVC
  3. Earthenware
  4. Concrete sewer pipe
👁️ Show Answer

Answer: B (CPVC)

45. The AC supply frequency commonly used in India is

  1. 10 Hz
  2. 25 Hz
  3. 50 Hz
  4. 100 Hz
👁️ Show Answer

Answer: C (50 Hz)

46. Three-phase supply is commonly preferred for

  1. larger electrical loads
  2. water traps
  3. drainage pipes
  4. small torches only
👁️ Show Answer

Answer: A (Larger electrical loads)

47. During an electrical fault, earthing helps provide

  1. a path for fault current
  2. additional sewage flow
  3. increased water pressure
  4. higher building load
👁️ Show Answer

Answer: A (A path for fault current)

48. A sprinkler system is mainly associated with

  1. ventilation
  2. acoustics
  3. water purification
  4. fire protection
👁️ Show Answer

Answer: D (Fire protection)

49. Which tank fitting automatically controls the incoming water according to water level?

  1. Gate valve
  2. Float valve
  3. Foot valve
  4. Air valve
👁️ Show Answer

Answer: B (Float valve)

50. A single-stack system normally uses

  1. one common discharge stack without a separate vent stack
  2. one water-supply pipe only
  3. separate soil and waste stacks
  4. only rainwater pipes
👁️ Show Answer

Answer: A (One common discharge stack without a separate vent stack)