GATE AR Section B1.3: Building Services and Sustainability PYQs & Answers — Page 3

Questions 21–30 of 83. Imported answers require independent review unless marked reviewed.

A 2 TR window air-conditioner of Energy Efficiency Ratio (EER) 3.1 is catering to a room of volume 40 m

. The air-conditioner is operational for 600 hours during summer on cooling mode. The compressor is also operational for the complete duration. The total energy consumption of the air-conditioner during the above mentioned period, in kWh, is __________ (rounded off to nearest integer).

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As per IS:4954 – 1964, the acceptable noise level (in dB) for urban residential areas is____________.

Your answerChoose one option.

35-45

65-75

20-30

15-25

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Thermal diffusivity of a wall is influenced by the choice of building material. Identify the statement(s) that is/are correct.

Your answerSelect all correct options. You can choose more than one.

Thermal diffusivity is inversely proportional to thermal conductivity.

Increase in specific heat capacity increases the thermal diffusivity.

Materials with low thermal diffusivity have a high amplitude dampening effect.

Thermal diffusivity is inversely proportional to the density of material.

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Match the instruments in Group I with the physical quantities they measure in Group II.

Group I: (P) Goniophotometer; (Q) Pyrheliometer; (R) Spectrophotometer; (S) Forward-Looking Infrared Camera.

Group II: (1) Electromagnetic Energy at Specific Wavelengths of Light; (2) Luminous Flux of Directed Light Sources; (3) Direct Solar Irradiance; (4) Temperature; (5) Global Solar Radiation

Your answerChoose one option.

P-5, Q-2, R-1, S-3

P-2, Q-3, R-1, S-4

P-2, Q-3, R-1, S-5

P-5, Q-1, R-2, S-4

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Match the terms in Group I with their associated items in Group II.

Group I	Group II
(P) Scotopic vision	(1) ability to see under low light condition using rod cells
(Q) Presbyopia	(2) vision in bright light using cone cells
(R) Emmetropia	(3) inability to focus on distant objects
(S) Photopic vision	(4) ideal distance vision
	(5) inability to focus on nearby objects

Your answerChoose one option.

P-1, Q-4, R-5, S-2

P-4, Q-3, R-1, S-2

P-1, Q-5, R-4, S-2

P-4, Q-2, R-1, S-5

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Choose the correct statement(s) from the following:

Your answerSelect all correct options. You can choose more than one.

Waste water from sinks, baths, etc. enters through the top inlet of a gully trap, while foul water from sweeping of rooms or courtyards enters from side inlet.

Anti-siphon traps have a reduced water-way at the inlet side, while the outlet being larger prevents the pipe from filling full and causing siphonic action.

Intercepting traps prevent foul gases from street sewer to enter into the house.

P, Q and S traps are classified according to their shape.

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The concentric circles in a sun-path diagram represent ____________.

Your answerChoose one option.

Altitude angle

Azimuth angle

Day of the year

Hour of the day

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Which of the following help(s) in keeping direct solar radiation out of the building?

Your answerSelect all correct options. You can choose more than one.

Mashrabiya

Badgir

Maqf

Chajja

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The maximum and minimum indoor dry bulb temperature of a room are 38 °C and 34 °C, respectively. If the corresponding outdoor maximum and minimum dry bulb temperature are 42 °C and 30 °C, respectively, then the thermal damping of the room (in percentage, rounded off to two decimal places) is __________.

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Match the aspects in Group I with the corresponding items in Group II.

Group I: (P) Fire safety; (Q) Seismic safety; (R) Water efficiency; (S) Accessible design.

Group II: (1) Intruder alarm; (2) Zero-strength barrier; (3) Stair lift; (4) Aerator; (5) Auxiliary damper.

Your answerChoose one option.

P-4, Q-5, R-2, S-3

P-5, Q-1, R-4, S-2

P-2, Q-4, R-5, S-1

P-2, Q-5, R-4, S-3

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GATE AR Section B1.3: Building Services and Sustainability PYQs

Question 65

Question 52

Question 54

Question 61

Question 62

Question 63

Question 11

Question 20

Question 24

Question 30