Basic Electrical Circuit Quiz

What is the primary function of the electrical power system?

• To store electrical energy

• To generate renewable energy

• To convert AC to DC

• To supply, transfer, and use electric power

Which of the following is a characteristic of a series circuit?

• It is more efficient than parallel circuits

• It has multiple paths for current flow

• Voltage is the same across all components

• All components share the same current

What does Ohm's Law state?

• Voltage is directly proportional to current

• Current is inversely proportional to resistance

• Power is equal to voltage times current

• Resistance is the ratio of voltage to current

What is the purpose of a step-up transformer?

• To decrease voltage for consumer use

• To convert AC to DC

• To store electrical energy

• To increase voltage for transmission

Which energy source is most commonly used in Malaysia for electricity generation?

• Solar energy

• Nuclear energy

• Coal

• Wind energy

What is the voltage level for a single-phase system in Malaysia?

• 400 V

• 230 V

• 11 kV

• 132 kV

What is the formula for calculating total resistance in a parallel circuit?

• RT = R1 - R2 - R3

• RT = R1 * R2 * R3

• 1/RT = 1/R1 + 1/R2 + 1/R3

• RT = R1 + R2 + R3

What is the average value of an AC waveform?

• The same as the peak value

• Twice the peak value

• 1.414 times the peak value

• 0.637 times the peak value

What does Kirchhoff's Current Law state?

• Voltage drop is equal across all components

• Power is conserved in a circuit

• The sum of currents entering a node equals the sum leaving

• The total voltage in a closed loop is zero

What is the effective value of a varying voltage or current called?

• Peak value

• RMS value

• Average value

• Instantaneous value