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Basic Electricity For HVAC Test Quiz Questions Final Review.
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Basic Electricity For HVAC Test Quiz Questions Final Review.
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HVACBasic Electricity For HVAC Test Quiz
Questions Final Review.
All of the following statements are true regarding good conductors of electricity except - ✔✔✔
- good conductors of electricity pass protons from atom to atom
All of the following are required in an electric circuit except a - ✔✔✔ - switch
Which of the following represents an accurate formula for power? - ✔✔✔ - P = E x I
Which of the following represents Ohm's law? - ✔✔✔ - R = E/I
Undersized wires can cause - ✔✔✔ - voltage drops, tripped circuit breakers, and overheating
What is the main difference between a fuse and a circuit breaker? - ✔✔✔ - Fuses must be
replaced, while circuit breakers can be reset
A residential AC power supply is often represented by a - ✔✔✔ - sine wave
If an atom has a net positive charge, which of the following is correct? - ✔✔✔ - The atom has
lost electrons
Electrical power is measured in - ✔✔✔ - watts
The __________ is that part of an atom that moves from one atom to another - ✔✔✔ - electron
HVAC Page 1
, HVAC
If a step-down transformer has windings with 1000 and 500 turns, what is the induced voltage at
the secondary winding if 100 volts is being applied to the primary winding? - ✔✔✔ - 50 volts
A solenoid can be described as - ✔✔✔ - a coil of wire
If there were a current flowing of 5 A in a 120-V circuit, what would the resistance be? - ✔✔✔ -
24 Ohms
Which of the following statements is true regarding circuit protection devices? - ✔✔✔ - GFCIs
are intended for use in wet or potentially wet locations
Referring to Figure 12.67 in the text, what size (gauge) wire should be used if the expected
amperage draw of a circuit is 60 amperes? - ✔✔✔ - 4
If a step-up transformer has windings with 1000 and 500 turns, what is the induced voltage at
the secondary winding if 100 volts is being applied to the primary winding? - ✔✔✔ - 200 volts
The most common method used to measure the amperage in a circuit is to - ✔✔✔ - energize
the circuit and use a clamp-on ammeter to clamp around one conductor in the circuit
The nucleus of an atom contains which particles - ✔✔✔ - Neutrons and protons
The opposition to current flow in a circuit is commonly referred to as - ✔✔✔ - resistance
Which of the following is a correct formula for the total resistance in a series circuit - ✔✔✔ - R
total = R 1 + R 2 + R 3 + ..........
HVAC Page 2
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