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Questions and Answers
What principle does an AC generator use?
What principle does an AC generator use?
- Newton's law of motion
- Archimedes' principle
- Coulomb's law
- Faraday's electromagnetic induction law (correct)
In an AC generator, when is the flux linking with the coil zero?
In an AC generator, when is the flux linking with the coil zero?
- When the coil is along XX' (perpendicular to the lines of flux)
- When the coil is making an angle θ with respect to XX'
- When the coil is along YY' (parallel to the lines of flux) (correct)
- When the coil is at its maximum angular velocity
What is the equation for alternating induced EMF according to Faraday's law of electromagnetic induction?
What is the equation for alternating induced EMF according to Faraday's law of electromagnetic induction?
- $E = N\omega\phi_m$ (correct)
- $E = \frac{N^2\phi}{\omega}$
- $E = \frac{N\phi}{\omega}$
- $E = N\omega^2\phi_m$
What does the symbol 'N' represent in the context of an AC generator?
What does the symbol 'N' represent in the context of an AC generator?
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When does the flux linking with the coil equal to its maximum value, ϕm?
When does the flux linking with the coil equal to its maximum value, ϕm?
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What does 'A' represent in the context of an AC generator?
What does 'A' represent in the context of an AC generator?
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What is the definition of waveform?
What is the definition of waveform?
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What does the RMS value of an alternating current represent?
What does the RMS value of an alternating current represent?
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What is the power factor?
What is the power factor?
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What is the time period in an AC circuit?
What is the time period in an AC circuit?
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What does the amplitude of a waveform represent?
What does the amplitude of a waveform represent?
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What is the frequency in an AC circuit?
What is the frequency in an AC circuit?
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What is the instantaneous value of a current?
What is the instantaneous value of a current?
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8
8
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In an electrical circuit Vrms stands for
In an electrical circuit Vrms stands for
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