Knowledge-Test I on Energy Efficiency in Households – Beginner level

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* 1. Do chargers and transformers without a connected load/device consume electricity?

No. Chargers and transformers without a connected load/device do not consume electricity and can remain plugged in if not in use.

Yes. Chargers and Transformers consume electricity even without being connected to a device and should therefore always be plugged or switched off if not in use.

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* 2. What is the most energy efficient lighting technology?

Halogen bulbs

LED (light emitting diodes) bulbs

CFL (Compact flourescent lights, also called energy saving bulbs)

Incandescent bulbs

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* 3. How can you reduce the energy consumption of your A/C unit?

By ensuring maximum airtightness of all windows and doors.

By closing all windows and doors.

By switching off the A/C unit in a room and opening windows and doors on cooler days.

By setting the thermostat of your Air Conditioner units at 24 to 25 °C (75-77 °F).

Chose an oversized cooling capacity of the A/C unit.

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* 4. Regarding your refrigeration device, which of the following recommendations are valid?

Keep doors of the refrigerator closed and don't open unnecessarily.

Repair or replace refrigerator door seals if you feel cold air around the closed door or if moisture is collecting.

Do not fill the refrigerator too much,, it uses less energy than a full one.

Do not de-frost your refrigerator or freezer.

Observe carefully whether the thermostat is functioning well (refrigerator compressor should stop running when desired temperature is reached), switch on and off regularly.

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* 5. Which of the following statement(s) for an electrical stove (cooking field and oven) are true?

Cooking or baking several dishes that require similar temperature at the same time helps with saving electricity.

Turning off the burners on your cooking field or your oven a few minutes before the alloted time helps with saving electricity.

Using the pre-heating function of the oven is recommended.

Using the microwave oven instead of an electric oven to reheat food is more energy-efficient.

Using the convection function of your oven, if available, helps save electricity.

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* 6. What is an energy-efficient way to operate your washing machine?

Operating the washing machine with the maximum allowable load of clothes.

Operating the washing machine with half or less of the maximum load of clothes to allow for deep cleaning.

Using the 30°C cycle or the cold-water mode.

Select the longest available washing cycle for better cleaning results.

Select a high spin speed and dry clothes in fresh air.

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* 7. What is the standby power (also called 'vampire power' or 'phantom current') and what statement is true?

Standby power consumption is the power that an electronic or kitchen device consumes when it is not in use but remains plugged in.

Standby power consumption is relatively low and does not influence my electricity bill.

Standby power can quickly amount to a considerate cost of my electricity bill.

It makes no sense to unplug electronic equipment when it is not in use for extended time.