NATE Core TESTS WITH ANSWERS A+ GRADE.
What should you use to cut capillary tubing? - A triangular or knife-edge file.
How would you connect a voltmeter to a circuit for taking voltage readings? - Connect the voltmeter in
parallel with the circuit being tested.
True or false?
Since electric motors can have two, four, or more poles, the fewer the number of poles, the faster the
motor turns? - True
True or false?
In a tapped multi-speed motor driving a supply blower, changing the connected tap changes the CFM
even under no blower load. - True
What is an example of a wet bulb thermometer? - A conventional thermometer with a moistened cloth
wick covering its sensor.
How is electrical current measured? - Amperes
According to health and safety regulations, how should the worker climb up or down a ladder? - Always
face the ladder.
What steps should a technician take to be certain the electrical meter can be used? - 1. Insert red test lead
into red common jack.
2. Insert black test lead into black MV jack.
3. Connect test probes across the circuit to be measured.
4. Read millivolt on the 0-50 scale.
According to Ohm's Law, when the voltage to an electric heating element is increased by 10%, what does
the current through the element increase by? - 10% (Current in a circuit is directly proportional to the
applied voltage, and inversely proportional to the circuit resistance)
, What type of process is combustion? - Chemical
True or false?
Hacksaws should never be used to cut copper tubing because saw chips can remain inside the tubing. -
True
What type of thermometer is used in a sling psychrometer? - Liquid filled thermometer
How is a pictorial schematic useful? - For quickly visualizing each component in a unit.
How can you compute relative humidity using a sling psychrometer? - By measuring wet bulb and dry
bulb temperatures.
True or false?
Motors above 5 hp that are used with belt driven fans are typically 240v/460v three phase. - True
As static pressure increases in a system with constant airflow, the blower motor amp draw ___________
with the static. - Increases
A technician works for a service company that is portrayed negatively in a news piece. The technician is
given the opportunity to meet with management to go over the information presented. After hearing all
the available facts, the technician decides the company committed no wrong and should be supported.
What character trait is being shown? - Perseverance
True or false?
Current flows in one direction in a DC circuit. - True
What federal agency has jurisdiction over the shipping and labeling of refrigerants? - DOT (Department
of Transportation)
A continuity check using an ohmmeter shows continuity by a reading of what? - Zero ohms or a specific
resistance.
What should you use to cut capillary tubing? - A triangular or knife-edge file.
How would you connect a voltmeter to a circuit for taking voltage readings? - Connect the voltmeter in
parallel with the circuit being tested.
True or false?
Since electric motors can have two, four, or more poles, the fewer the number of poles, the faster the
motor turns? - True
True or false?
In a tapped multi-speed motor driving a supply blower, changing the connected tap changes the CFM
even under no blower load. - True
What is an example of a wet bulb thermometer? - A conventional thermometer with a moistened cloth
wick covering its sensor.
How is electrical current measured? - Amperes
According to health and safety regulations, how should the worker climb up or down a ladder? - Always
face the ladder.
What steps should a technician take to be certain the electrical meter can be used? - 1. Insert red test lead
into red common jack.
2. Insert black test lead into black MV jack.
3. Connect test probes across the circuit to be measured.
4. Read millivolt on the 0-50 scale.
According to Ohm's Law, when the voltage to an electric heating element is increased by 10%, what does
the current through the element increase by? - 10% (Current in a circuit is directly proportional to the
applied voltage, and inversely proportional to the circuit resistance)
, What type of process is combustion? - Chemical
True or false?
Hacksaws should never be used to cut copper tubing because saw chips can remain inside the tubing. -
True
What type of thermometer is used in a sling psychrometer? - Liquid filled thermometer
How is a pictorial schematic useful? - For quickly visualizing each component in a unit.
How can you compute relative humidity using a sling psychrometer? - By measuring wet bulb and dry
bulb temperatures.
True or false?
Motors above 5 hp that are used with belt driven fans are typically 240v/460v three phase. - True
As static pressure increases in a system with constant airflow, the blower motor amp draw ___________
with the static. - Increases
A technician works for a service company that is portrayed negatively in a news piece. The technician is
given the opportunity to meet with management to go over the information presented. After hearing all
the available facts, the technician decides the company committed no wrong and should be supported.
What character trait is being shown? - Perseverance
True or false?
Current flows in one direction in a DC circuit. - True
What federal agency has jurisdiction over the shipping and labeling of refrigerants? - DOT (Department
of Transportation)
A continuity check using an ohmmeter shows continuity by a reading of what? - Zero ohms or a specific
resistance.
