The output frequency of a generator is typically either 50 Hertz (Hz) or 60 Hertz (Hz), depending on the region where it is used; 50 Hz is common in Europe and most of the world, while 60 Hz is used in North America and a few other areas.

In Bangladesh output frequency of generator is 50 Hz

These instruments are so constructed that the quantity being measured can only be determined by the output by the instruments e.g. ammeter, wattmeter & energy meter.

An “inventory of tools and equipment” is a detailed list that records all the tools and machinery a company or individual owns, including information like item name, serial number, condition, location, and purchase date, essentially acting as a comprehensive record to track and manage their assets effectively. 

Explanation: A three-phase system consists of three separate AC power sources with their voltage waveforms displaced by 120 degrees relative to each other.