Who has the shortest wavelength?
gamma rays
Is Hertz equal to m s?
The SI unit for frequency is the hertz (Hz), which is equal to 1/s, or once per second. Frequency is encountered many times in physics. The phase speed of sound in air is 343 meters per second.
What is the SI unit of Hertz?
The number of periods or cycles per second is called frequency. The SI unit for frequency is the hertz (Hz). One hertz is the same as one cycle per second.
How many volts are in a Hertz?
The Volt/Hz ratio is calculated by taking the rated voltage of the drive (such as 460 Volts) and dividing by the line frequency (typically 60 Hz or 50 Hz). For example, a 460 Volt drive running on 60 Hz has a ratio of: 460 V / 60 Hz = 7.67 V/Hz.
Will 60Hz work on 50Hz?
Electrical machines designed for 50Hz can usually work safely in 60Hz power supply, but not applicable to 60Hz machines to be run in 50Hz power supply. It is not always easy to just change the machine or equipment to rated frequency considering the FINANCIAL BURDEN that comes with it.
Why is power at 60 Hz?
The proliferation of frequencies grew out of the rapid development of electrical machines in the period 1880 through 1900. Although 50 Hz was suitable for both, in 1890 Westinghouse considered that existing arc-lighting equipment operated slightly better on 60 Hz, and so that frequency was chosen.
What happens if 60Hz motor is driven at 50Hz?
60Hz motor will run 20% slower on 50Hz power supply This also results in 20% less power. Basically, running the electric machine slower usually means it will be demanding less power. That’s good, as the motor also decrease 20% of its power, and the cooling fan is slow down too.
Is 60 Hz dangerous?
EMFs of 0–300 Hz are defined as ELF-EMFs. We are exposed daily to 50–60 Hz ELF-EMFs produced by most electrical home appliances [1, 2]. Several epidemiological studies have suggested that ELF-EMF increases the risk of developing cancer, including leukemia, brain, and breast cancers [3–5].
Which is more dangerous 50Hz or 60hz?
This dependence of the heart on current strength by the way also applies to the effectiveness of defibrillation. This dependence on current strength which, in its turn is determined by the voltage available makes 230 Volt lines at 50 Hz more dangerous than 120 Volts at 60 Hz.