Previous Year Question
Correct answer: D
Explanation
Energy management and auditing aim to reduce energy cost and waste while improving efficient resource use and reducing adverse environmental and pollution-related impacts. In the wording of the source, all four listed objectives belong to this broader purpose, so option D is correct.
Formula
Step-by-step solution
Correct Answer
D — 1, 2, 3 and 4
Concept and Reasoning
Energy management and auditing aim to reduce energy cost and waste while improving efficient resource use and reducing adverse environmental and pollution-related impacts. In the wording of the source, all four listed objectives belong to this broader purpose, so option D is correct.
Calculation / Key Relation
Energy audit: measure → analyze → identify conservation opportunities → reduce cost/waste/impact
Exam Takeaway
Energy audit is both economic and environmental, not only a billing exercise.
Common Mistake
Do not restrict an energy audit objective to cost reduction alone.
Common mistake
Do not restrict an energy audit objective to cost reduction alone.
Exam tip
Energy audit is both economic and environmental, not only a billing exercise.
Quick method
Energy audit is both economic and environmental, not only a billing exercise.