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Dovator [93]
3 years ago
6

The procedure that scientists should follow when investigating nature

Engineering
1 answer:
Mars2501 [29]3 years ago
3 0
1. Define a question to investigate
2. Make a hypothesis (prediction)
3. Gather data from outside
4. Analyse the data
5. Draw a conclusion and see if it fits with the hypothesis
6. See how you can improve the experiment
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Using the data in the photo write the complex waveform expression​
UNO [17]

Answer:

1st Harmonic:

v(t) = 50\cos(2000\pi t)

3rd Harmonic:

v(t) = 9\cos(6000\pi t)

5th Harmonic:

v(t) = 6\cos(10000\pi t)

7th Harmonic:

v(t) = 2\cos(14000\pi t)

Explanation:

The general form to represent a complex sinusoidal waveform is given by

v(t) = A\cos(2\pi f t + \phi)

Where A is the amplitude in volts of the sinusoidal waveform

Where f is the frequency in cycles per second (Hz) of the sinusoidal waveform

Where \phi is the phase angle in radians of the sinusoidal waveform.

1st Harmonic:

We have A = 50, f = 1000 and φ = 0

v(t) = 50\cos(2\pi 1000 t + 0) \\\\v(t) = 50\cos(2000\pi t)

3rd Harmonic:

We have A = 9, f = 3000 and φ = 0

v(t) = 9\cos(2\pi 3000 t + 0) \\\\v(t) = 9\cos(6000\pi t)

5th Harmonic:

We have A = 6, f = 5000 and φ = 0

v(t) = 6\cos(2\pi 5000 t + 0) \\\\v(t) = 6\cos(10000\pi t)

7th Harmonic:

We have A = 2, f = 7000 and φ = 0

v(t) = 2\cos(2\pi 7000 t + 0) \\\\v(t) = 2\cos(14000\pi t)

Note: The even-numbered harmonics have 0 amplitude that is why they are not shown here.

8 0
4 years ago
Read 2 more answers
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