Electrical Motor Controls Quiz

What allows free electrons to move easily through it?

• Resistor

• Conductor

• Insulator

• Semiconductor

Which material has four valence electrons?

• Superconductor

• Semiconductor

• Insulator

• Conductor

What is the relationship between voltage, current, and resistance known as?

• Faraday's Law

• Kirchhoff's Law

• Newton's Law

• Ohm's Law

How is DC voltage produced?

• From capacitors

• From transformers

• From batteries and photovoltaic cells

• From alternating current

In a series connection, how many paths are there for current flow?

• Multiple

• Three

• Two

• One

What happens when a conductor is formed into a coil?

• It forms a weaker magnetic field

• It loses its magnetic properties

• It becomes an insulator

• It forms a stronger magnetic field

Who discovered that a magnetic field is created around an electrical conductor?

• Nikola Tesla

• Hans Christian Ørsted

• Albert Einstein

• Isaac Newton

What is the relationship between power, voltage, and current in an electrical circuit known as?

• Resistance formula

• Power formula

• Current formula

• Voltage formula

What can be added to a motor to achieve a power factor of 1.0?

• A running capacitor

• A transformer

• A diode

• A resistor

True power is always less than apparent power in a circuit with what condition?

• Equal voltage and current

• Zero resistance

• No phase shift

• A phase shift between voltage and current