Answer :
Answer:
180,000
Explanation:
Frequency is a quantity that is measured in Hertz [Hz] and it represents the number of rotations per second.
A motor with a frequency of 50 Hz will rotate 50 times per second.
Since we don't want to know how many times it rotates per second, but per hour. The first step is to find how many seconds there are in an hour and then multiply that amount by 50.
Seconds in an hour:
there are 60 seconds per minute, and 60 minutes per hour, thus there are
60*60 = 3,600 seconds in an hour
We know that the motor will rotate 50 times per second so to find the number of rotations in 1 hour = 3,600 seconds we multiply:
50*3,600 = 180,000 rotations
The revolution per hour for the motor, if the alternating current source is changed to 50 Hz will be 180,000 rev\hour
What is Frequency?
Frequency is a quantity that is measured in Hertz [Hz] and it represents the number of rotations per second.
A motor with a frequency of 50 Hz will rotate 50 times per second.
Since we don't want to know how many times it rotates per second, but per hour. The first step is to find how many seconds there are in an hour and then multiply that amount by 50.
Seconds in an hour:
here are 60 seconds per minute, and 60 minutes per hour, thus there are
[tex]60\times 60=3600[/tex] seconds in an hour
We know that the motor will rotate 50 times per second so to find the number of rotations in 1 hour = 3,600 seconds we multiply:
[tex]50\times 3600=180000[/tex] Rotations
Thus the revolution per hour for the motor, if the alternating current source is changed to 50 Hz will be 180,000 rev\hour
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