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suv79
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how can i work out the frequency of the voltage V1= 3sin(wt) and V2= 2cos(wt) ?
suv79 said:how can i work out the frequency of the voltage V1= 3sin(wt) and V2= 2cos(wt) ?
suv79 said:i think that the wt is the same for both voltages, so the frequency will be the same,
i have added the two voltages together, which i believe can only be done if the frequency are the same.
suv79 said:i just need to know that if the frequency are the same on V1+V2=V3
It depends on whether you want the result to be expressed as a sin function or a cos function. The trig identity used to form the sum will be either:KEEPitSIMPLES said:why are you all finding the angle via ⅔? to find arctan is it not sin/cos? therefore this would be 3/2? giving the angle 56.31deg not 33.69. I have it remembered and in my notes that it is this way around, help as to why it has changed for this question would be greatly appreciated.
Voltage frequency refers to the number of cycles per second that an alternating current (AC) changes direction. It is measured in hertz (Hz) and is used to determine the rate at which electrical energy is being supplied.
Voltage frequency can be calculated by dividing the number of cycles (or periods) per second by the total time of the cycle. This can be represented by the formula: frequency = 1 / time period.
Voltage frequency is important because it affects the performance and efficiency of electrical equipment. Different devices require different frequencies to function properly, and an incorrect frequency can cause damage or malfunctions.
The standard voltage frequency used in most countries is 50 Hz or 60 Hz. In the United States, Canada, and parts of South America and Japan, the standard frequency is 60 Hz, while most other countries use 50 Hz as the standard.
Yes, voltage frequency can be changed by using devices called frequency converters. These devices can convert the frequency of an electrical current to match the requirements of a particular device or country's standard frequency.