The number of watthours represented by one revolution of the disk is known as what?

The term that refers to the number of watthours represented by one revolution of the disk is commonly known as "Kh." This value is significant in electric metering, particularly in electromechanical meters, where the rotating disk translates energy usage into recorded bills. The "Kh" value represents the constant of the meter, which dictates how many watthours are recorded for each revolution of the disk, providing a direct measurement of energy consumption.

In metering systems, understanding how Kh relates to total energy consumption is crucial for accurate billing and energy management. It effectively links the mechanical movement of the disk with electrical energy usage, ensuring customers are billed according to their actual power consumption.

The other terms mentioned relate to different aspects of electrical measurement. "Kva" refers to kilovolt-amperes, a measure of apparent power; "Kw" stands for kilowatts, which indicates real power; and "Kwh" is the kilowatt-hour, a unit of energy representing one kilowatt of power used for one hour. While these are all important in the field of electricity, they do not specifically describe the relationship of one revolution of the meter disk to the energy recorded.