What is the current EPA standard for PM 10 for daily exposure? EPA is retaining the existing 24-hour primary standard for coarse particles (PM10), with its level of 150 µg/m3. An area meets the 24-hour PM10 standard if it does not exceed the 150 µg/m3 level more than once per year on average over a […]
What are two components of no load current in transformer?
What are two components of no load current in transformer? No load current of large power transformers consists of active and reactive component. Active component covers hysteresis and eddy current losses in the core. Reactive component (usually called magnetizing current) creates magnetic field / magnetic flux and lags the voltage by 90°. Why no load […]
Can we see water vapor?
Can we see water vapor? Gaseous water, or water vapor, isn’t something you can see, but it’s part of the air around you. Under normal circumstances, water vapor enters the atmosphere through evaporation and leaves by condensation (rain, snow, etc.). Water vapor also enters the atmosphere by a process called sublimation. Does water vapor contain […]
Why do hurricanes never hit California?
Why do hurricanes never hit California? In short, wind direction and cold water are the main reasons we don’t see hurricanes in California. Tropical storms and tropical storms that become hurricanes need warm water to form. The area of 15 degrees north latitude is prime real estate for storms over open water. Is a hurricane […]
What is the aim of Community Psychology?
What is the aim of Community Psychology? Community psychologists seek to understand the quality of life of individuals within groups, organizations and institutions, communities, and society. Their aim is to enhance quality of life through collaborative research and action. What are the functions of community psychology? Community psychology focuses on social issues, social institutions, and […]
Does UV light break down ozone?
Does UV light break down ozone? UV light will create ozone from atmospheric oxygen at short wavelengths of less than 240 nanometers (nm). UV light will also destroy ozone and break ozone back down into atomic oxygen (O) and diatomic oxygen (O2) at wavelengths from about 200 nm to 315 nm. How do you kill […]
Who invented the electricity we use today?
Who invented the electricity we use today? Benjamin Franklin What is the application of electricity in our daily life? Electricity is an essential part of modern life and important to the U.S. economy. People use electricity for lighting, heating, cooling, and refrigeration and for operating appliances, computers, electronics, machinery, and public transportation systems. What is […]
Which item will sound travel faster?
Which item will sound travel faster? Solids: Sound travels fastest through solids. This is because molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to travel more quickly through it. In fact, sound waves travel over 17 times faster through steel than through air. Why […]
What is difference between bacteria and archaea?
What is difference between bacteria and archaea? Difference in Cell structure Similar to bacteria, archaea do not have interior membranes but both have a cell wall and use flagella to swim. Archaea differ in the fact that their cell wall does not contain peptidoglycan and cell membrane uses ether linked lipids as opposed to ester […]
Which is the healthiest sport?
Which is the healthiest sport? The 10 Healthiest Sports (1) Squash. Although squash players must be wary of flying racquets coming from their opponent’s direction, squash is a relatively safe game for beginners. (2) Rowing. (3) Rock Climbing. (4) Swimming. (5) Cross-Country Skiing. (6) Basketball. (7) Cycling. (8) Running. What are the positive and negative […]