The GATE Grind

GATE Building Services: Acoustics in buildings – Previous Year Questions

7 GATE previous year questions on Acoustics in buildings (Building Services, Architecture and Planning) with answers and explanations, from every paper.

  1. GATE 2021 AR Q54 (2 marks, Numerical answer) – A hall measures 8×14×4 m and has four 1.5×1.0 m windows and two 1×2 m doors. Wall, floor and ceiling absorption coefficient is 0.2; closed…
  2. GATE 2022 AR — Architecture Q64 (2 marks, Numerical answer) – A panel has absorption coefficients at 63, 125, 250, 500, 1000, 2000, 4000, 8000, 16000 Hz of 0.1, 0.2, 0.5, 0.5, 0.7, 0.8, 0.8, 0.9, 0.9…
  3. GATE 2023 AR — Architecture Q52 (1 mark, Multiple choice) – According to IS 4954:1964, what is the acceptable outdoor noise level, in dB, for urban residential areas?
  4. GATE 2024 AR — Planning Q35 (2 marks, Multiple choice) – Match P floating floor, Q float valve, R metal float, S free float with 1 overflow control, 2 scheduling delay allowance, 3 acoustic buffer, 4…
  5. GATE 2024 AR — Architecture Q35 (2 marks, Multiple choice) – Match P floating floor, Q float valve, R metal float, S free float with 1 overflow control, 2 scheduling delay allowance, 3 acoustic buffer, 4…
  6. GATE 2024 AR — Architecture Q64 (2 marks, Numerical answer) – A 3500 m³ lecture hall has the sound-decay curve shown. The source is switched off at P. Using RT 60, find total absorption in sabins, to nearest…
  7. GATE 2025 AR — Architecture Q65 (2 marks, Numerical answer) – Sixteen independent identical machines are equally distant from a receiver. Each produces 60 dB there. With a 70 dB limit, find maximum machines…