Inductors/Transformers Explained

What is the function of an inductor in an electrical circuit?

• Filters water in a circuit

• Generates heat

• Stores energy in its magnetic field

• Converts light into electricity

How does an inductor resist changes in current flow?

• By stopping the flow of electrons

• By increasing the current flow

• By reducing the magnetic field

• By creating an opposing force

What unit is used to measure the inductance of an inductor?

• Volt

• Watt

• Henry

• Ampere

How can inductance be accurately measured?

• By listening to the circuit

• By visual inspection

• Using a standard multimeter

• Using an RLC meter

Which property of an inductor causes it to oppose changes in current flow?

• Resistance

• Capacitance

• Conductance

• Inductance

What is the main function of a transformer?

• It converts AC to DC

• It converts DC to AC

• To Step down or up the DC voltages

• To Step down or up the AC voltages

What is the unit used to rate transformers?

• Ampere-hour

• Volt-Ampere

• Ampere-Ohm

• Volt-hour

What output voltage will you expect in a step-up transformer?

• Higher voltage output than input
• No voltage output
• Equal voltage output as input
• Lower voltage output than input

What output voltage will you expect in a step-down transformer?

• Higher voltage output than input
• No voltage output
• Equal voltage output as input
• Lower voltage output than input

Why do we need to use a step-up transformer in transmission lines?

• To decrease voltage level and increase current level for efficient long-distance power transmission

• To decrease voltage level and decrease current level for efficient long-distance power transmission

• To increase voltage level and increase current level for efficient long-distance power transmission

• To increase voltage level and decrease current level for efficient long-distance power transmission