EASA Part-66 Cat A Module 3: Electrical Fundamentals Mastery 2

What is the main purpose of the electrolyte in a battery cell?

• To provide a medium for electron flow

• To prevent the flow of electrons

• To act as a barrier between the anode and cathode

• To facilitate the chemical reaction needed for voltage production

When cells are connected in series, how is the total voltage calculated?

• It is the sum of the individual cell voltages

• It is the average of the individual cell voltages

• It remains the same as the voltage of one cell

• It is the product of the individual cell voltages

What is the primary function of a thermocouple?

• To convert thermal energy into electrical energy

• To measure temperature

• To insulate heat

• To convert electrical energy into thermal energy

Which materials are commonly used to construct a thermocouple?

• Copper and zinc

• Iron and copper

• Platinum and rhodium

• Aluminum and silicon

How does a photo-cell generate electricity?

• Through the heating of a filament

• By converting light energy into electrical energy

• By mechanical movement

• Through chemical reactions

What is the effect of internal resistance on a battery's performance?

• It increases the battery's efficiency

• It has no effect on the battery's performance

• It decreases the voltage available from the battery

• It increases the voltage available from the battery

What is the shape of a sinusoidal waveform?

• Square

• Triangular

• Sine wave

• Sawtooth

How is electrical power calculated in a DC circuit?

• Power = Voltage x Current

• Power = Voltage / Current

• Power = Current / Voltage

• Power = Voltage^2 / Current

What is the advantage of using three-phase power over single-phase power?

• It is more cost-effective to generate

• It provides a constant power transfer

• It is easier to step up and step down voltages

• It requires less insulation

What is the unit of electrical resistance?

• Ampere

• Volt

• Ohm

• Watt