Question

1 hertz is equal to:
1) 1 vibration per minute
2) 10 vibration per minute
3) 60 vibration per minute
4) 600 vibrations per minute

Answer 1

Hint:One hertz is equal to one cycle per second.
Cycle here refers to one complete wave of alternating current or voltage.
Hertz is the unit of frequency.
Using the above description we will elaborate the number of cycles in 1 hertz.

Complete answer:
Let us elaborate hertz in more details.
Hertz is the unit of frequency. Frequency is the number of cycles per second in an ac sine wave. Frequency is the rate at which the current changes its direction per second.
One hertz is equal to one cycle per second and therefore 1 hertz is equal to 60 vibrations per minute.
Cycle is equal to one complete wave of alternating current or voltage.
Period is the time required to produce one complete cycle of a waveform.
Frequency in general terms is defined as how often something repeats. When we talk about electrical quantities like current or voltage frequency is the number of times a sine wave repeats or completes a positive to negative cycle. More number of cycles means higher is the frequency.

If an alternating current has 3 hertz of frequency it means that the signal indicates that its waveform repeats 3 times in 1 second.

Frequency typically describes the electrical equipment operations. Different equipment have different frequency ranges for a particular operation. Equipment designed to operate at a fixed frequency performs abnormally if operated at a different frequency than specified range. Like if motors are operated at 60Hz will cause malfunctioning.

Thus, option 3 is correct.

Note:Various frequency ranges are: audio frequency range is 15Hz to 20Hz( which is the audible range of human ears), variable frequency drives, which normally uses a 1-20 kilohertz carrier frequency, power line frequency 50 or 60 hertz, medium frequency 3-30MHz, High frequency 30-300MHz, Radio frequency 30-300KHz.