RI JOURNEYMAN MAIN EXAMINATION TEST QUESTIONS
AND ANSWERS GRADED A+
✔✔What is adsorption? - ✔✔The process that occurs when a gas or a liquid
accumulates on the surface of a solid or a liquid, forming a film molecules or atoms.
✔✔Sorption encompasses what? - ✔✔Both processes of adsorption and absorption,
however desorption is the reverse process.
✔✔What is compression ratio? - ✔✔The relationship between the absolute pressure on
the low side to the absolute pressure on the high side.
✔✔What is the refrigeration effect? - ✔✔The amount of heat absorbed by the refrigerant
used.
✔✔What is enthalpy? - ✔✔The total amount of heat present in a given substance.
✔✔Enthalpy is used to indicate what? - ✔✔Total heat energy contained in a substance.
✔✔What does enthalpy include? - ✔✔Both sensible and latent heat.
✔✔What is enthalpy measured with? - ✔✔Wet bulb thermometer.
✔✔What is stratified air? - ✔✔When hot air remains at the top of the room and cold air
stays at the bottom.
✔✔The vapor state of a substance will have the (Lowest or Highest) heat content? -
✔✔Highest
✔✔What is a decibel? - ✔✔A unit for measuring the relative loudness of sound
✔✔What decibel range is considered not injectable to the human ear? - ✔✔0-90
✔✔A condensing unit rate at 8 decibels is considered what? - ✔✔Quiet
✔✔What is the equation for SEER? - ✔✔BTU divided by Watts=SEER
✔✔A good conductor of electricity is said to what? - ✔✔Have free electrons which can
move easily from one atom to another.
✔✔(True or false) 60 hertz AC current is making a complete reversal of direction 60
times per second. - ✔✔True
, ✔✔What is a Ampere? - ✔✔It is a measure of the quality of electrons flowing past a
point in the electric circuit in a given time.
✔✔What happens as loads are added in parallel circuits? - ✔✔The total resistance of
the circuit will decrease.
✔✔How are the condenser and condenser fan motor wired? - ✔✔In Parallel.
✔✔When calculating the total resistance of a parallel circuit... - ✔✔The result will always
be lower than the lowest resistance.
✔✔What happens when two light bulbs are wired in series and one burns out? - ✔✔The
other bulb will go out.
✔✔What happens if three bulbs are wired in parallel and one bulb burns out? - ✔✔The
total current of the circuit will decrease.
✔✔What happens in a circuit with two or more resistances are in series? - ✔✔The total
resistance in the circuit is the sum of the resistances.
✔✔If resistance increases... - ✔✔The current decreases in a circuit.
✔✔(True or false) As the diameter of a wire increases; its resistance will also increase. -
✔✔False
✔✔(True or false) In a circuit with two or more resistances in parallel, the total
resistance in the circuit is the sum of the resistances. - ✔✔False
✔✔What is the equation to find Watts in an electrical circuit? - ✔✔You multiply volts and
amperes
✔✔What happens when a conductor carrying electrical current is formed into a coil? -
✔✔The magnetic field around the wire increases, and the strength of the magnetic field
generated by the wire will increase.
✔✔(True or false) Always check for tight connections at electrical terminals before
energizing a newly installed system. - ✔✔True
✔✔What is considered a typical insulator? - ✔✔Glass, rubber, plastic or (all the above)
✔✔Why is glass, rubber and plastic good insulators? - ✔✔Because they have no "free"
electrons and electrical current cannot pass through it.
AND ANSWERS GRADED A+
✔✔What is adsorption? - ✔✔The process that occurs when a gas or a liquid
accumulates on the surface of a solid or a liquid, forming a film molecules or atoms.
✔✔Sorption encompasses what? - ✔✔Both processes of adsorption and absorption,
however desorption is the reverse process.
✔✔What is compression ratio? - ✔✔The relationship between the absolute pressure on
the low side to the absolute pressure on the high side.
✔✔What is the refrigeration effect? - ✔✔The amount of heat absorbed by the refrigerant
used.
✔✔What is enthalpy? - ✔✔The total amount of heat present in a given substance.
✔✔Enthalpy is used to indicate what? - ✔✔Total heat energy contained in a substance.
✔✔What does enthalpy include? - ✔✔Both sensible and latent heat.
✔✔What is enthalpy measured with? - ✔✔Wet bulb thermometer.
✔✔What is stratified air? - ✔✔When hot air remains at the top of the room and cold air
stays at the bottom.
✔✔The vapor state of a substance will have the (Lowest or Highest) heat content? -
✔✔Highest
✔✔What is a decibel? - ✔✔A unit for measuring the relative loudness of sound
✔✔What decibel range is considered not injectable to the human ear? - ✔✔0-90
✔✔A condensing unit rate at 8 decibels is considered what? - ✔✔Quiet
✔✔What is the equation for SEER? - ✔✔BTU divided by Watts=SEER
✔✔A good conductor of electricity is said to what? - ✔✔Have free electrons which can
move easily from one atom to another.
✔✔(True or false) 60 hertz AC current is making a complete reversal of direction 60
times per second. - ✔✔True
, ✔✔What is a Ampere? - ✔✔It is a measure of the quality of electrons flowing past a
point in the electric circuit in a given time.
✔✔What happens as loads are added in parallel circuits? - ✔✔The total resistance of
the circuit will decrease.
✔✔How are the condenser and condenser fan motor wired? - ✔✔In Parallel.
✔✔When calculating the total resistance of a parallel circuit... - ✔✔The result will always
be lower than the lowest resistance.
✔✔What happens when two light bulbs are wired in series and one burns out? - ✔✔The
other bulb will go out.
✔✔What happens if three bulbs are wired in parallel and one bulb burns out? - ✔✔The
total current of the circuit will decrease.
✔✔What happens in a circuit with two or more resistances are in series? - ✔✔The total
resistance in the circuit is the sum of the resistances.
✔✔If resistance increases... - ✔✔The current decreases in a circuit.
✔✔(True or false) As the diameter of a wire increases; its resistance will also increase. -
✔✔False
✔✔(True or false) In a circuit with two or more resistances in parallel, the total
resistance in the circuit is the sum of the resistances. - ✔✔False
✔✔What is the equation to find Watts in an electrical circuit? - ✔✔You multiply volts and
amperes
✔✔What happens when a conductor carrying electrical current is formed into a coil? -
✔✔The magnetic field around the wire increases, and the strength of the magnetic field
generated by the wire will increase.
✔✔(True or false) Always check for tight connections at electrical terminals before
energizing a newly installed system. - ✔✔True
✔✔What is considered a typical insulator? - ✔✔Glass, rubber, plastic or (all the above)
✔✔Why is glass, rubber and plastic good insulators? - ✔✔Because they have no "free"
electrons and electrical current cannot pass through it.
