What is used to ask for more information about people or things. When you don’t know something you can use What. Low frequency: 13 cm cone-type x 8; High frequency: Wave front control horn with compression driver x 4 As you can see, LED downlights offer a much more energy-efficient solution and use up to 90% less energy. When compared with fluorescent lighting, LED downlights consume around half the energy, with a 12-watt LED downlight capable of providing the same brightness (or lumens) as a 24-watt fluorescent bulb.

In the real world, native English speakers could use what in the first example. People always use which when there are only 2 or 3 options. After shape, size, and colour, it’s time to decide just how much crisp lighting you want. So, it’s time to talk lumens—or the amount of light you want from your LED bulb. For everyday task lighting in the bathroom or kitchen, it could be ideal to go with the maximum range of LED lighting, so between 250 and 450 lumen of IKEA opal globe and chandelier white light bulbs.While most people still associate wattage with the amount of light you expect to get from a bulb, watts are actually a measurement of how much power goes into the bulb, not how bright it is. When we don’t know the subject, we don’t use the auxiliary. This is often with the question word “ Who ” Replacing older bulbs with LEDs can help to reduce energy consumption and save money on your energy bills. In addition, an LED downlight will usually last longer than a halogen downlight, reducing the need to keep buying and changing replacement bulbs. Bright lighting

You can see that it is not possible to answer this question with yes or no. What are the different Wh questions + How? What Storage & organisation Furniture Textiles Kitchenware & tableware Kitchens Lighting Decoration Rugs, mats & flooring Beds & mattresses Baby & children Smart home Bathroom products Laundry & cleaning Plants & plant pots Home electronics Home improvement Outdoor living Food & beverages Christmas Shop Shop by room Whom is not common in conversations so it is not important for students to learn. Please do not try to use it when you are speaking. It is only for formal writing. If you want to learn more read this post. . https://www.grammarly.com/blog/who-vs-whom-its-not-as-complicated-as-you-might-think/ Exercises on Wh Questions Auxiliary verb just means that you have a helping verb to show that a sentence is in the past or a question. In the present simple, we use Do/Does to show that the sentence is a question.We use Who to discover the subject of the action. For example. Peter joined the football team. But…. If we don’t know that Peter joined then we ask the question Who joined the football team? (See below for why we don’t use “did” in this sentence)

Lumens are now used as a more accurate measurement of brightness, and watts to gauge energy consumption. Modern LED downlights are designed to use less energy and therefore have lower wattages, making them much more energy-efficient while providing more light output. Look at the example above “Do you like apples? In this example “ you ” is the subject of the sentence. The person that does the action. Typically, standard halogen lights have a wattage of around 55 watts, while LED equivalents range from 4.5 watts to 14 watts. The answer to open questions varies depending on the other person. We use these question words from the table above.

Types of LED light bulbs

For cosier situations, such as intimate dinner parties or bedside reading, select stunning LED bulbs with standout decorative effects with more intimate lighting levels of 80 to 200 lumen. And just because you need sharp tasking lighting in the kitchen or bathroom doesn’t mean you can’t cool things down. Either go with dimmable LED lighting or pair brighter LED bulbs in wall or ceiling sconces with cooler lighting options. Frequently asked questions about LED light bulbs What are the pros and cons of LED light bulbs?