![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
For some common household appliances rated current and power
Generally speaking, the TV set is 150W, the air conditioner is 1500W, the electric teapot is 1500W, the computer is 150W, the fluorescent lamp is 40W, the washing machine is 300W, the microwave oven is 1800W, the heat storage electric water heater is 1500W, the fast heating electric heater is 8000w, and the refrigerator is 100W. Of course, the sizes and capacities of various electrical appliances are different, and the power varies greatly. These data are general concepts
For the voltage of 220 V, the electrical equipment is 3000 W and 10000 w respectively. What is the size of the wire and the size of the air switch?
Using 220 V single-phase power supply, if your line is not too long, transmission power is not far away words;
The load of 1.3000w can be equipped with 4 square copper wires, and the air switch can be 20A or 25A
2. 10000 w load with 10 square copper wire is OK, air switch choose 80 a
The wattage of the bulb is 7000 watts, the voltage is 220 V, how much wire should be used
According to the parameters you give, we can calculate: PE = 7kwkx = 0.80cos%% C = 0.85pjs = 5.60kwijs = 29.95a by looking up the table: conductor model = BV, ambient temperature = 25, conductor arrangement mode = laying mode = laying in open laying conduit -------- nominal section ampacity 1.5182.5
A and B bulbs are respectively marked with the words of 220 V, 40 W, 220 V, 60 W, which are connected in parallel with 220 V power supply. The one with high current intensity through the filament is () bulb, filament
If the length of the two bulbs is the same, the thicker tungsten filament is (). If the two bulbs are used for the same period of time, what is the ratio of power consumption of a and B lamps?
If the length of the two bulbs is the same, the thicker tungsten filament is (220 V, 60 W). If the two bulbs are used for the same time, the power consumption ratio of a and B lamps is 2:3
RELATED INFORMATIONS
- 1. The method of calculating the electric energy and power consumed by a certain household appliance with the data on the electric energy meter
- 2. The power of an electric appliance is 2kW. How many kilowatts of electricity does it use after it works normally for 3 hours
- 3. How to convert watt to degree? For example, how long does a 40 watt bulb use electricity
- 4. Electric power in Physics: I want to ask, is a bulb marked with 220 V 800 w working for 800 W per hour or not
- 5. How long does one degree of electricity keep all kinds of electrical appliances running?
- 6. How long does a 100 watt appliance last
- 7. One degree of electricity can give a 50 Watt fluorescent lamp several hours
- 8. When x / k = y, X is proportional to y; when K / x = y, X is proportional to y; when kxy = 2, X is proportional to y; when K / x = 1 / y, X is proportional to y?
- 9. The inclination angle of the straight line x = 3-tcos20 ° y = Tsin (- 20 °) (t is not a parameter) is ()? （） 20 ° 160 ° a or B?
- 10. Seeking the great spirit in mathematical problems A is an acute angle, and cosa
- 11. Want to know how to calculate the power consumption of electrical appliances? 1. For example, a refrigerator: the power consumption (kWh / 24h) is 0.49. What is the daily power consumption? How to calculate it? 2. A 2.5-hp cabinet air conditioner: the energy efficiency ratio is 3.39, the input power (W) is 2130, and the cooling capacity is 7350 (W). What is the hourly power consumption of this air conditioner? What are the following figures of the energy efficiency ratio, the input power and the cooling capacity?
- 12. How many kilowatt hours does a 1000W household appliance need? Oh
- 13. What's the power rating on the household appliances? If it says the rated power is 900W, how much power does the appliance operate at 900W from the beginning to the end? An electric rice cooker, does he start cooking with 900W power? Casually ask the amount of power written on the household appliance, does it mean that the maximum power consumption of this appliance is 900W? Not more than that?
- 14. Electrical appliances in school dormitories should not exceed a few watts It refers to some regulations of the state that the dormitory of a school should not exceed how many watts. If it exceeds a certain power, it is considered as a high-power electrical appliance
- 15. Xiaodong's refrigerator's name plate is shown in the following table. When Xiaodong's household appliances only have refrigerator working, it takes 6min to observe the refrigerator from start to stop working, and the turntable of the electric energy meter turns 18 times. Then the refrigerator actually works in one day when it works with rated power consumption______ h. Start up______ Each time, every 1 kilowatt hour consumed, the meter turns______ Power consumption 0.72kw · H / 24h rated voltage 220V refrigerating capacity 4kg input power 120W refrigerant R600a climate type n · st
- 16. There is a refrigerator, its main technical parameters table has a column called power consumption (kW. H / 24h), the data is 0.66, you know
- 17. Why is there a big gap between the actual power consumption of refrigerator and that provided on the nameplate? Because the refrigerator has the working characteristics of I asked about the characteristics of the job
- 18. Xiaoming's family bought a new induction cooker. Its rated voltage is 220 V and rated power is 1000 W. let the induction cooker work under the rated voltage. Heat 10 kg water from 2 ℃ to 100 ℃ without heat loss. It is known that C water = 4.2x10 cubic J / (kg. ℃). Question: (1) how much heat does water need to absorb? (2) what is the heating time?
- 19. Hair dryer is a common electrical appliance in modern families. Figure 1 shows the hair dryer used in Xiaohua's home. In the process of using, she found that the hair dryer can blow both hot and cold air. According to this phenomenon, she concluded that the motor with fan and the heating wire can generate heat in the hair dryer. According to the phenomenon that the hair dryer can output cold air independently, she thought that the motor and the heating wire are the same (1) which of the above two circuits do you think is more in line with the actual situation. (2) Xiaohua read the manual and learned that the power of this type of hair dryer is 460W when blowing hot air and 20W when blowing cold air. When the hair dryer is working normally and blowing hot air, the power, resistance and current of the heating wire pass through the hair dryer in 1min The heat produced by a hot wire
- 20. The price of type a refrigerator sold in shopping malls is 2190 yuan per unit, and the daily power consumption is 1 degree, while the price of type B energy-saving refrigerator is 10% higher than that of type a refrigerator, but the daily power consumption is 0.55 degree? (calculated according to the service life of 10 years, 365 days per year and 0.40 yuan per kilowatt hour)