Alternating Sinusoidal Current

What is the definition of Alternating Sinusoidal Current?

• A type of electrical current that is constant and never changes direction

• A type of electrical current that flows in one direction only

• A type of electrical current that reverses direction at regular intervals and has a sinusoidal waveform.

• A type of electrical current that has a square waveform

What are the characteristics of Alternating Sinusoidal Current?

• It constantly changes direction, has a sinusoidal waveform, and can vary in frequency and amplitude.

• It constantly changes direction, has a triangular waveform, and is always at a constant frequency and amplitude.

• It only changes direction occasionally, has a sawtooth waveform, and is always at a constant frequency and amplitude.

• It never changes direction, has a square waveform, and is always at a constant frequency and amplitude.

Can you provide examples of applications of Alternating Sinusoidal Current?

• Clothing

• Furniture

• Cooking utensils

• Power generation, electric motors, transformers, household appliances

How is Alternating Sinusoidal Current analyzed in circuits?

• Phasor diagrams and complex numbers

• By counting the number of peaks and valleys

• Using Roman numerals and decimals

• Through the use of bar graphs and pie charts

What are the components of an AC circuit?

• battery, resistor, switch

• voltage source, load, conductors

• current source, inductor, capacitor

• transformer, diode, fuse

How do you calculate AC power in a circuit?

• P = Vrms * Irms * sin(θ)

• P = Vrms / Irms * cos(θ)

• P = Vpeak * Ipeak * cos(θ)

• P = Vrms * Irms * cos(θ)

Explain the behavior of an R-C series circuit in Alternating Sinusoidal Current.

• The voltage across the resistor and capacitor are not affected by the current

• The circuit behaves the same as in Direct Current

• The voltage across the resistor and capacitor are out of phase with each other

• The voltage across the resistor and capacitor are in phase with each other

Describe the behavior of an R-L-C series circuit in Alternating Sinusoidal Current.

• Impedance increases with frequency

• Impedance changes with frequency

• Impedance remains constant with frequency

• Impedance decreases with frequency

What is average power and power factor in Alternating Sinusoidal Current?

• Minimum power and power factor

• Instantaneous power and power factor

• Average power and power factor

• Maximum power and power factor

How do you calculate average power and power factor in a circuit?

• Use the formula P = Vrms * Irms * tan(θ) for average power and power factor = P / S

• Use the formula P = Vrms * Irms * cos(θ) for average power and power factor = P * S

• Use the formula P = Vrms * Irms * sin(θ) for average power and power factor = P / S

• Use the formula P = Vrms * Irms * cos(θ) for average power and power factor = P / S