![](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>)
The meaning of 1KW Power 1KW is not electric power
No matter what kind of force, the work is the same unit, which can be converted to each other. You must know that the power P = f * v. then, 1kW is to use the force of 1000N to push the object to move at the speed of 1mgs. At this time, the power is 1000W or 1kW. Of course, you can give other examples like me, as long as you know the formula, in addition to mechanics and electricity, Heat, optics, etc. have similar formulas to give you intuitive concepts
What is the definition of current
On the definition of charge quantity
Definition: (1) the motion of the charge in the medium. The direction of the current is opposite to that of the electron. (2) the electric quantity flowing through a given cross section of a conductor divided by the corresponding infinitesimal time
Concept analysis of circuit diagram
Circuit diagram, block diagram, printed board diagram, assembly diagram
Wiring diagram, logic diagram, flow chart
What is their concept? Is there any difference? How to distinguish?
Circuit diagram, mainly resistance, triode and other principles, describes the principle of the circuit block diagram, should be in front of the circuit diagram, describes the general principle, the circuit is a subdivision of the printed circuit board diagram, this is related to the PCB assembly diagram, is your board how to assemble the wiring diagram, it seems needless to say, is how to wiring
RELATED INFORMATIONS
- 1. The rated current of three-phase motor with 37 kW power is calculated according to the rated current of three-phase motor For a three-phase motor with a power of 37 kW, the formula is calculated according to the rated current of the three-phase motor. If the rated voltages are 380v660v3000v6000v, what are the rated currents of the motor
- 2. The rated voltage U of a motor is 220 V, the rated current I is 20 A, and the efficiency of the motor is 80%
- 3. Calculation formula of steel bar weight Multiply the square of reinforcement diameter (mm) by 0.00617 617 is the weight of round 10 steel bar per meter. The weight of steel bar is proportional to the square of diameter (radius) G=0.617*D*D/100 Weight per meter (kg) = diameter of reinforcement (mm) × diameter of reinforcement (mm) × 0.00617 The density of steel is 7.85 For example, the reinforcement of 10 is 7850 * 0.01/2 square * 3.14 = 0.617kg/m Square of 0.617 * 10 / 100 = 0.617 Other steel bars can be used: 0.00617 * square of steel bar diameter D to calculate the weight per meter But how does this ratio come out, and how can it be justified?
- 4. How much is the theoretical weight per meter of H-beam 250 * 200 * 6 * 8? It's better to give a detailed calculation formula
- 5. The reason why molten sodium chloride can conduct electricity
- 6. If the transformer capacity PS is known and the power factor is 0.8, the reactive power is () COSφ=P/S P=S×COSφ=0.8S Q=√(S²-P²)=√[S²-(0.8S)²]=0.6S Reactive power is (0.6s) How is 0.6 calculated?
- 7. Why can shunt capacitor improve the power factor of inductive load? Is series capacitor OK? Why
- 8. What is the power factor of a series circuit with 3 ohm resistance and 4 ohm inductive reactance
- 9. The magnitude of the electromagnetic force on an electrified conductor in a magnetic field depends on_____ 、_____ , and_______ .
- 10. What is the magnetic field around an electrified straight wire?
- 11. If the resistance of a conductor is 30 ohm and the work done by the current is 18 joules in one minute, the voltage at both ends of the conductor is --- V, the current intensity through the conductor is --- a
- 12. In 50 seconds, if the amount of charge passing through a conductor is 20 Coulomb and the work done by the current is 120 joules, then the current passing through the conductor is 20 Coulomb_________ Ampere, conductor
- 13. Request the formula of resistance when making LED light string. And the algorithm of resistance power
- 14. Power 5V LED lamp 3V 20mA need to connect how much resistance calculation formula
- 15. If only one LED lamp is connected, how much current limiting resistance is required for 12V DC power supply?
- 16. Exercises of voltage and current in junior high school physics
- 17. The frequency of alternating current in China is ~ Hz
- 18. In China, the period of alternating current is s? With a frequency of 50 Hz. How many times does the direction of current change in a period?
- 19. What does 50 Hz AC mean? Is an electrode positive 25 times in a second, negative 25 times or 50 times each?
- 20. How many joules is 1kW. H fast