Technical Quiz for 2nd years

Ohm's Law states that:

• • V = I * R

• • P = V / I

• R = V / I

• I = R * V

• In a series circuit, the total resistance is:

• The sum of all individual resistances

• The product of all individual resistances

• The average of all individual resistances

• The reciprocal of the sum of the reciprocals of individual resistances

What is the function of a capacitor in an AC circuit?

• • To store electrical energy

• • To provide a path for current

• • To convert AC to DC

• To increase resistance

What is the main difference between AC and DC?

• AC changes direction periodically, while DC flows in one direction

• AC is used in batteries, while DC is used in power lines

• AC can only be used in high-voltage systems, while DC is used for low-voltage systems

• AC is the current used in electronics, while DC is used in power generation

What is the purpose of a diode in a circuit?

• • To store energy

• • To allow current to flow in one direction only

• • To increase voltage

• To measure electrical power

In a parallel circuit, the total resistance is:

• • The sum of all individual resistances

• • The reciprocal of the sum of the reciprocals of individual resistances

• The product of all individual resistances

• The average of all individual resistance

What is the unit of electrical charge?

• Ampere

• • Volt

• Coulomb

• Watt

Which type of electrical power is most commonly used in household outlets?

• Direct Current (DC)

• Single-phase Alternating Current (AC)

• • Three-phase Alternating Current (AC)

• High-frequency Alternating Current (AC)

What does the term 'voltage drop' refer to in an electrical circuit?

• The decrease in voltage as current flows through a component

• The increase in current when resistance is added

• The amount of power used by a component

• The total voltage supplied by the power source

What is the power factor in an AC circuit?

• The ratio of real power to apparent power

• The ratio of voltage to current

• The ratio of resistance to reactance

• The ratio of inductive to capacitive reactance