List of top Building Services and Sustainability Questions asked in GATE AR

Which of the following factors impact Daylight Autonomy of a built space?

Match the Instruments in Group I with the corresponding climate parameters in Group II.

A blackbody radiant heating panel of 5 m\(^2\) surface area at 35\(^\circ\)C surface temperature is located 1 m away from a 1 m\(^2\) surface at 20\(^\circ\)C. The Stefan-Boltzmann constant is \(5.6703 \times 10^{-8}\ \text{W m}^{-2} \text{K}^{-4}\). The rate of radiant heat emission by the radiant heating panel (in W, rounded off to two decimal places) is \(\underline{\hspace{2cm}}\).

In an ideal air-conditioning cycle shown below, which of the following statement(s) is/are true in the segments P, Q, R, S? 

Given indoor temperature range 38°C (max) and 34°C (min) and outdoor range 42°C and 30°C, the thermal damping (in %) is \(\underline{\hspace{2cm}}\).
Which of the following help(s) in keeping direct solar radiation out of the building?
The concentric circles in a sun-path diagram represent \(\underline{\hspace{2cm}}\).

Using the following values of thermal conductance, surface conductance, and thermal resistance, the U value across the given wall cross-section is \(\underline{\hspace{1cm}}\) W/m\(^2\)°C (round off to 2 decimal places). 

A circular cricket field of 180 m diameter is illuminated by four floodlight towers. The floodlight towers are equally spaced along the perimeter of the field. The height of the floodlight tower is 48 m. Using 'Inverse Square Law', the illumination level at the center of the field is found as 750 Lux. Each tower consists of 50 lamps, each rated at 700 Watt. The efficacy of each lamp is \(\underline{\hspace{1cm}}\) Lumen/Watt (round off to 2 decimal places).
A building is constructed on a plot measuring 70 m × 40 m. The utilized FAR of the building is 1.5. An energy audit team found that the average monthly electricity bill of the building is INR 2,94,000. The unit cost of the electricity is INR 7. The Building Energy Index is \(\underline{\hspace{1cm}}\) kW-hr/m\(^2\)/year (in integer).
Given: Surface conductance = 20 W/m²°C, U-value of the wall = 1.2 W/m²°C, and solar gain factor = 0.66. Find the solar gain factor for a wall.
A rectangular hall with dimensions 8.0 m × 14.0 m × 4.0 m has 4 windows (1.5 m × 1.0 m each) and 2 doors (1.0 m × 2.0 m each). The coefficients of absorption are given below. Considering all windows open and doors closed, the reverberation time in seconds is \(\underline{\hspace{2cm}}\).
Coefficient of Performance (COP) for heat pump is used to calculate
Which among the following acronyms represents a thermal comfort index?
As per National Building Code of India, 2016, the function of an Automatic Rescue Device is to