Skip to content
GK24
Prime
Environment & EcologyMedium

ISEER, the Indian Seasonal Energy Efficiency Ratio, is used to rate which of the following?

  1. A.Ceiling fans
  2. B.Room air conditioners
  3. C.LED bulbs
  4. D.Distribution transformers

Correct answer

B. Room air conditioners

Explanation

The correct answer is B, room air conditioners. ISEER measures the total cooling an air conditioner delivers over a cooling season divided by the electricity it consumes in that season, so it reflects part-load working in the Indian climate rather than performance at one fixed temperature; a higher ISEER means a more efficient machine, and the star bands for air conditioners are drawn on ISEER values. Option A is wrong because ceiling fans are rated on the air they deliver per watt, the service value, not on a seasonal cooling ratio. Option C is wrong because lamps are judged on lumens per watt, the light output per unit of power. Option D is wrong because transformers are rated on their losses, the no-load and load losses, at a given loading. All four appliances can carry star labels, but only the air conditioner uses ISEER.

Read the full article: Energy Conservation: BEE, Star Labelling and UJALA

हिंदी में पढ़ें

Practice Questions

View all
Q1.Environment & EcologyEasy

The Bureau of Energy Efficiency was established under which of the following Acts?

  1. A.The Electricity Act, 2003
  2. B.The Energy Conservation Act, 2001
  3. C.The Environment (Protection) Act, 1986
  4. D.The Air (Prevention and Control of Pollution) Act, 1981
Show answer
Correct answer: B. The Energy Conservation Act, 2001

That Act created the Bureau of Energy Efficiency as a statutory body and gave it the power to prescribe efficiency standards, run the labelling programme and prepare the building code; the Bureau came into existence on 1 March 2002 under the Ministry of Power.

Q3.Environment & EcologyEasy

On a BEE star label pasted on an appliance, a greater number of stars indicates that the appliance

  1. A.consumes less electricity for the same output
  2. B.consumes more electricity for the same output
  3. C.is cheaper than lower rated models
  4. D.has a longer warranty period
Show answer
Correct answer: A. consumes less electricity for the same output

The star label places an appliance in a band from one star to five stars on the basis of its energy performance, so a five-star model is the most efficient and will show the lowest annual energy consumption in its size class.

Q4.Environment & EcologyEasy

UJALA, the Government scheme for efficient lighting, stands for

  1. A.Unnat Jyoti by Affordable LEDs for All
  2. B.Universal Jyoti and Lighting Assistance
  3. C.Urban Jyoti and Affordable Lamps for All
  4. D.Unnat Jan Aadhar Lighting Abhiyan
Show answer
Correct answer: A. Unnat Jyoti by Affordable LEDs for All

The programme began as the Domestic Efficient Lighting Programme and was launched under the UJALA name on 5 January 2015, selling LED bulbs, tubelights and efficient ceiling fans to domestic consumers at a price far below the retail rate.

Q5.Environment & EcologyMedium

Which organisation implements the UJALA and Street Lighting National Programme on the ground?

  1. A.Bureau of Energy Efficiency
  2. B.Energy Efficiency Services Limited
  3. C.Central Electricity Authority
  4. D.Solar Energy Corporation of India
Show answer
Correct answer: B. Energy Efficiency Services Limited

The correct answer is B, Energy Efficiency Services Limited, a joint venture of public sector undertakings under the Ministry of Power that procures LED bulbs and street lights in bulk and recovers the cost from consumers or from the savings in a municipality's electricity bill.