MONTHLY TRADE TEST FEB-2024

What is the superpower of impedance in an AC circuit?

• Impedance can fly like a superhero

• Impedance loves to dance in an AC circuit

• Impedance is the secret identity of resistance in an AC circuit

• Impedance in an AC circuit is the ultimate hero, combining resistance and reactance to fight against the flow of alternating current.

What happens when inductive and capacitive reactances have a dance-off in an AC circuit?

• The circuit throws a party with no reactance.

• The circuit shows off its high impedance moves.

• Inductive and capacitive reactances bust a move, canceling each other out to create a purely resistive circuit at the resonant frequency.

• Resonance decides to take a vacation and only shows up in DC circuits.

What is the superpower of power factor?

• Power factor is the superhero that saves the day by balancing real power and apparent power in an electrical system.

• Power factor is the sidekick that helps reduce voltage drop in a system.

• Power factor is the energy wizard that controls the amount of energy consumed by a device.

• Power factor is the electrical ninja that fights against resistance in an electrical circuit.

How do we determine the total impedance in a series AC circuit?

• By multiplying the resistance with the inductance

• By summing up the individual impedance values of each component in the circuit.

• By dividing the total voltage by the total current

• By taking the square root of the total power

What happens to the total impedance in a parallel AC circuit?

• The total impedance takes a nap

• The total impedance throws a party

• The total impedance stays chill

• The total impedance goes on a rollercoaster ride

Why is having a good power factor like having a superhero in an AC circuit?

• Because the power factor is like a sidekick, it helps the efficiency of the circuit by ensuring electrical power is converted into useful work effectively.

• Just like a superhero determines the outcome of a battle, the power factor affects the efficiency of an AC circuit.

• Similar to how a superhero controls the situation, the power factor directly influences the voltage in an AC circuit.

• Having a higher power factor is like having a superpower, it leads to higher efficiency in the circuit.

What is the magical formula for unlocking the secrets of impedance in an AC circuit?

• Z = R - X

• Z = sqrt(R^2 + X^2)

• Z = R + X

• Z = R * X

What causes a party in an AC circuit?

• A party happens when the resistance is equal to the inductive reactance in an AC circuit.

• A party happens when XL = XC in an AC circuit.

• A party happens when the power factor is unity in an AC circuit.

• A party happens when the voltage is out of phase with the current in an AC circuit.

Why is it crucial to have power factor correction in AC circuits?

• Power factor correction is like a superhero that fights against voltage drop!

• Power factor correction is the secret sauce that reduces reactive power, boosts efficiency, minimizes voltage drop, and saves the day!

• Power factor correction is the villain that increases reactive power and decreases efficiency.

• Power factor correction is the troublemaker that causes penalties in AC circuits.

What happens to the dance moves of voltage and current in a series AC circuit?

• Depends on the type of load: resistive load - in phase, inductive load - current lags voltage by 90 degrees, capacitive load - current leads voltage by 90 degrees

• In a series AC circuit, voltage and current are always in phase

• The dance moves of voltage and current remain constant regardless of the type of load in a series AC circuit

• Depends on the type of load: resistive load - current leads voltage by 90 degrees, inductive load - in phase, capacitive load - current lags voltage by 90 degrees