Unit conversion of physical voltage and resistance 1v=________ mv=_______ uv=______ kv 1 ohm=____ K ohm=_______ M ohm

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• 1. When exploring the relationship between the current on the resistor and the voltage at both ends, why adjust the sliding rheostat when replacing the fixed value resistor with a larger one? In order to keep the voltage constant, the sliding rheostat must be adjusted. How to adjust it? What is the principle? Isn't the series circuit a voltage divider? The ammeter is connected in series with the sliding rheostat and the fixed resistance R. when the sliding rheostat changes, the ammeter will also change. But why does it only change the voltage? When the sliding rheostat is connected in series in the circuit, the resistance becomes larger, Will the voltage it receives increase or decrease?
• 2. RLC circuit, the phase angle is positive, the resistance, capacitance, inductance change 2 times, how much phase angle change
• 3. The digital multimeter tests the diode, triode, resistance, capacitance and inductance with a diode Good answer, 50 points to send you, and thank you, hope to answer in detail
• 4. Problems of inductance, resistance and capacitance
• 5. In the integral circuit of operational amplifier, a resistor is connected in parallel with the capacitor. What is the function of this circuit? The positive phase input terminal of the integral circuit of the operational amplifier is grounded, the input voltage VI is connected to the reverse phase input terminal through the resistance, the capacitor section is connected to the reverse phase input terminal, and the output V0 is connected to one end. What is the function of this circuit?
• 6. A light bulb indicates that 220V 40W is connected to the lighting circuit. What is the current? What is the resistance of the lamp? If the lamp is connected to the 110V circuit, In the actual circuit of the lamp, what is the actual power of the lamp?
• 7. A 220 V, 300 W bulb, its filament resistance is__ If it is connected to a 110V circuit, the actual power of the light bulb is____ .
• 8. The reason why the incandescent lamp is dim after a long time is that the resistance of the filament becomes larger and the current passing through becomes smaller. What is the reason for the change of resistance?
• 9. How many Mu is a square kilometer
• 10. How many square meters is the land area of 1 minute 6% now?
• 11. All units of resistance and their conversion? How many Ω is 1m Ω?
• 12. How to convert the unit between capacitance and power consumption? There are 56 220uF capacitors on a device (arranged in 7 columns in parallel, 8 capacitors in series in each column) for energy storage, charging and discharging. Take the charging voltage to 220 V as an example, how many watts (degrees) of electricity is consumed without charging and discharging? How to calculate and convert the unit?
• 13. Unit conversion, and into scientific counting method 70 μ M = () M = () mm 0.05 square decimeter = () square meter = () square centimeter 200 cc = () m3 = () l
• 14. How many meters is 1MW
• 15. How much horsepower does 1kW generator need to generate 1kW to operate normally How much horsepower does 1kW generator need to generate 1kW electric energy to operate normally What is the average horsepower per minute How much horsepower does 1kW generator need to generate 1kW electric energy
• 16. How to calculate the current? Is it power divided by voltage or kW multiplied by 2?
• 17. If the rated current of the three-phase asynchronous motor is in = 10 A and the motor starts with load frequently, how many a should the rated current of the fuse link be selected? Please explain the reason Options: a.10a B, 15A C, 25A D, 50A e, 100A
• 18. How much is the rated current of 15kw three-phase asynchronous motor?
• 19. How many times of starting current and rated current are there when the motor is star delta connected?
• 20. Write out the double interlock mechanism of forward and reverse control circuit of three-phase asynchronous motor