Discussion
A roof of 500 m\( ^2 \) at U-value 1.2 W/m\( ^2 \)K under 20 \( ^\circ \)C of difference conducts
Answer: B
Correct answer: 12 kW
\[ Q = UA\Delta T = 1.2 \times 500 \times 20 = 12{,}000\ \mathrm{W}. \] A roof is usually the largest single element of the envelope and receives the strongest solar radiation, so it repays insulation more than any other surface - and is generally the easiest to insulate.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development