Why contactor is used in motor? A contactor is a large relay, usually used to switch current to an electric motor or another high-power load. Large electric motors can be protected from overcurrent damage through the use of overload heaters and overload contacts. What is difference between circuit breaker and contactor? A contactor is an […]
How do printers use static electricity?
How do printers use static electricity? Photocopiers. This flow chart outlines how a photocopier works. Ink jet printers use static electricity to guide a tiny jet of ink to the correct place on the page. Laser printers work in a similar way. How does aluminum foil make static electricity? Electricity experiment for kids instructions: Cut […]
Is Earth losing its magnetic field?
Is Earth losing its magnetic field? Reversals occur nearly randomly in time, with intervals between reversals ranging from less than 0.1 million years to as much as 50 million years. The most recent geomagnetic reversal, called the Brunhes–Matuyama reversal, occurred about 780,000 years ago. Where is Earth’s magnetic field strongest? magnetic north pole Can humans […]
How strong is tuff rock?
How strong is tuff rock? Tuff rock has geotechnical properties such as 18-25 kN/m3 of unit weight, 1.5 – 2.4 gr/cm3 of bulk density, 2.29 – 2.64 gr/cm3 of particle density, highly varied compressive strength depending on the degree of weathering, 0 – 1.45 MPa of cohesion, friction angle = 24° – 45° of friction […]
How long does aspirin take to dissolve in water?
How long does aspirin take to dissolve in water? After the Alka-Seltzer tablet was added to the hot water the tablet should have quickly dissolved, taking some 20 to 30 seconds to do so, depending on the exact temperature. Does aspirin dissolve water? Solubility. Aspirin is only slightly soluble in water and acidic solutions such […]
Why do meteorologists use station models quizlet?
Why do meteorologists use station models quizlet? Meteorologists created the station model to fit a number of weather elements into a small space on weather maps. This allows map users to analyze patterns in atmospheric pressure, temperature, wind speed & direction, cloud cover, precipitation, etc. How is the Doppler effect used to predict weather? Answer: […]
Which color star is the coldest?
Which color star is the coldest? red What is the most powerful car engine ever made? BHP-per-litre: the world’s most powerful car engines Bugatti Chiron: 185.0bhp/litre. Ford GT: 185.1bhp/litre. Nissan GT-R50: 186.9bhp/litre. McLaren Senna: 197.5bhp/litre. SSC Ultimate Aero TT: 202.8bhp/litre. Mercedes-AMG A45: 208.4bhp/litre. Mitsubishi Evo X FQ-440 MR: 220.2bhp/litre. Koenigsegg Jesko: 313.6bhp/litre. Koenigsegg’s latest car […]
When and where are hydraulics used?
When and where are hydraulics used? They use hydraulics to increase water pressure for better cleaning. Dishwashers fitted with hydraulics are also generally quieter. Construction machines. Equipment such as cranes, forklifts, jacks, pumps and fall arrest safety harnesses use hydraulics to lift and lower objects. Are car hydraulics legal? A car with hydraulics over the […]
What are the requirements of database?
What are the requirements of database? In the spirit of David Letterman’s Top Ten lists, here is a look at what IT management requires from database management systems (DBMSs). System-Level Data Recovery. Application-Level Data Recovery. Application Data Availability. Multi-Level Data Security. Application Performance. Scalability: Users, Transactions, Data. What are the requirements of relational model? Best […]
What if microscope was not invented?
What if microscope was not invented? Microscopes are very important. Diseases would have been more common without them. We would not know as much about egg cell development without them. Our world would be very different in a bad way without the invenion of the microscope. What is the world’s largest cell? The largest cell […]