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6 Cards in this Set
- Front
- Back
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What is the formula to find inductive reactance?
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2*PIE*F*L
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What is the capacitive reactance of a 2uF capacitor at 400 Hertz?
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199 ohms
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You have a 4 ohm speaker and a 100 ohm source. What must the turns ratio be to match?
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Zp/Zs = (Np/Ns)squared
5:1 |
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A transformer has 400 turns on the primary and 1200 turns on the secondary. If 120 volts is applied to the primary What is the induced voltage on the secondary?
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Es/Ep = Ns/Np
Es = 360 volts |
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A transformer has 500 turns on the primary and 100 turns on the secondary. If 120 volts AC is applied to the primary what is the voltage induced in the secondary?
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Es/Ep = Ns/Np
Es = 24 volts |
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A transformer has a 10:1 turns ratio.If the primary has a current of 100mA, how much current flows in the secondary?
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Ip/Is = Ns/Np
Is = 1A |
