Κουίζ για Ηλεκτρική Ενέργεια (ATA 24)

What is the basic operating principle of an AC alternator?

• Electromagnetic induction

• Thermal induction

• Mechanical induction

• Electrostatic induction

What is the main advantage of static converters?

• They require more maintenance

• They produce less energy

• They have moving parts

• They are lighter and more compact

What is the function of a transformer?

• To measure electrical resistance

• To change the voltage of electric current

• To convert AC to DC

• To store energy

What is the result of overloading a circuit?

• Increase in voltage

• Decrease in resistance

• Increase in current flow

• Destruction of the circuit

What is the function of an SCR?

• To store energy

• To control the flow of current

• To measure voltage

• To convert AC to DC

What is the main difference between primary and secondary cells?

• Capacity

• Output voltage

• Chemical composition

• Rechargeability

What is the function of the GCU in an AC inverter?

• To control the resistance

• To regulate the voltage and frequency

• To store energy

• To measure the temperature

What is the result of overheating a NiCd battery?

• Increase in lifespan

• Decrease in voltage

• Thermal runaway

• Increase in capacity

What is the basic operating principle of a converter?

• Electromagnetic induction

• Mechanical induction

• Electrostatic induction

• Thermal induction

What is the function of a protection circuit?

• To control the flow of current

• To increase the voltage

• To prevent damage to the circuit

• To store energy