Engineering Utilities 1 - Electricity Horsepower Quiz

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Questions and Answers

What does the symbol 'V' represent in the context of electricity?

  • Volts (correct)
  • Kilowatt Hours
  • Efficiency
  • Resistance

What is the formula for calculating current in a DC circuit?

  • 𝑰 = 𝑬 ÷ 𝑷
  • 𝑰 = 𝑷 ÷ 𝑬 (correct)
  • 𝑰 = 𝑷 + 𝑬
  • 𝑰 = 𝑷 × 𝑬

What is the formula to calculate power in an AC single-phase circuit?

  • 𝑷 = 𝑬 × 𝑰 × 𝑷𝑭 (correct)
  • 𝑷 = 𝑬 ÷ 𝑰 × 𝑷𝑭
  • 𝑷 = 𝑬 ÷ (𝑰 × 𝑷𝑭)
  • 𝑷 = 𝑬 × 𝑰 ÷ 𝑷𝑭

What is the unit of measurement for resistance in an electrical circuit?

<p>Ohms (C)</p>
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In a DC circuit, what does the formula '𝑷 = 𝑬 × 𝑰' represent?

<p>Power (C)</p>
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What is the term used to describe a group or series of different atoms?

<p>Molecule (B)</p>
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What does the symbol 'PF' stand for in electrical engineering?

<p>Power Factor (C)</p>
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Which particle adds atomic weight to an atom but does not have any electrical charge?

<p>Neutron (B)</p>
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What creates a natural attraction or bonding between the proton and electron in balanced atoms?

<p>Cancellation of charges (D)</p>
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What type of particle is responsible for electron flow (electricity) and can be positively or negatively charged?

<p>Ion (C)</p>
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Which type of electrons are free to move from atom to atom and orbit on the outermost ring of an atom?

<p>Free electrons (D)</p>
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What type of materials stop the flow of electricity due to the 5 to 8 electrons held tightly in the outer ring?

<p>Insulators (D)</p>
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Which theory states that current flows from negative to positive?

<p>Electron Theory (B)</p>
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What term refers to materials with exactly 4 free electrons in the outer orbit and are neither conductors nor insulators?

<p>Semiconductors (A)</p>
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What type of particles can release an electron to become balanced again when they lose or gain an electron?

<p>Ions (A)</p>
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What is the term for the building blocks in the universe for mass, which is the smallest particle in which an element or substance can be divided without losing its property?

<p>Atom (C)</p>
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What is the formula to calculate power in an AC three-phase circuit?

<p>𝑷 = 1.732 × 𝑬 × 𝑰 × 𝑷𝑭 (B)</p>
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What does the symbol 'VA' represent in the context of electricity?

<p>Volts Ampere (C)</p>
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What is the formula to calculate current in a single-phase AC circuit?

<p>𝑰 = 𝑷 ÷ (𝑬 × 𝑷𝑭) (C)</p>
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What type of power is measured in kilowatt-hours (kWh)?

<p>Real Power (B)</p>
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What is the formula for calculating efficiency in a DC circuit?

<p>(𝐸 × 𝐻𝑃) ÷ (𝑉 × 𝐴) (B)</p>
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What is the symbol 'R' or 'Ω' used to represent in the context of electricity?

<p>Resistance (B)</p>
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What term refers to the group or series of different atoms?

<p>Molecule (B)</p>
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In the context of electricity, what does the symbol 'V' represent?

<p>Voltage (B)</p>
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What is the term for the building blocks in the universe for mass, which is the smallest particle in which an element or substance can be divided without losing its property?

<p>Atom (A)</p>
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What type of particles can release an electron to become balanced again when they lose or gain an electron?

<p>Ions (C)</p>
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Which type of electrons are free to move from atom to atom and orbit on the outermost ring of an atom?

<p>Free Electrons (A)</p>
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What creates a natural attraction or bonding between the proton and electron in balanced atoms?

<p>Free Electrons (C)</p>
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What does the symbol 'PF' stand for in electrical engineering?

<p>Power Factor (D)</p>
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What type of materials stop the flow of electricity due to the 5 to 8 electrons held tightly in the outer ring?

<p>Insulators (C)</p>
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Flashcards

What does 'V' represent?

The potential difference between two points in a circuit.

𝑰 = 𝑷 ÷ 𝑬 meaning?

Formula for calculating current in a DC circuit: Current equals Power divided by Voltage.

𝑷 = 𝑬 × 𝑰 × 𝑷𝑭 Meaning?

Formula for calculating power in a single-phase AC circuit: Power equals Voltage times Current times Power Factor.

What is an Ohm?

The opposition to the flow of electric current.

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𝑷 = 𝑬 × 𝑰 meaning?

In a DC circuit, this formula defines the power dissipated or consumed.

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What is a Molecule?

A group or series of different atoms bonded together.

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What is 'PF'?

The ratio of real power to apparent power in an AC circuit.

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What is a Neutron?

A neutral particle within the atom's nucleus contributing to its mass.

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Proton-Electron Attraction?

The electrostatic force between positively charged protons and negatively charged electrons.

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What is an Ion?

A charged particle that is responsible for electron flow (electricity).

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What are free electrons?

Electrons that are not bound to a particular atom and can move freely.

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What are Insulators?

Materials that resist electric current flow due to tightly held electrons.

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Which theory states?

Current flows from negative to positive.

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What are Semiconductors?

Materials with conductivity between conductors and insulators.

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Ions balance by?

Particles that become balanced in charge by gaining or losing electrons.

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What is an Atom?

The smallest unit of matter that retains an element's properties.

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𝑷 = 1.732 × 𝑬 × 𝑰 × 𝑷𝑭 means?

Formula for power in a three-phase AC circuit.

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What is 'VA'?

A unit of apparent power, the product of voltage and current.

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𝑰 = 𝑷 ÷ (𝑬 × 𝑷𝑭) meaning?

Formula to calculate single-phase AC current.

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What is Real Power?

Power consumed over time.

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Efficiency Formula?

The ratio of output power to input power.

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What is Resistance?

Opposition to current flow.

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What is a Molecule?

A group or series of atoms bonded together.

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