Nate core exam 2025 GRADED A LATEST VERSION QUESTIONS
AND ANSWERS
2. What are the three basic types of wiring diagrams 1. The ladder diagram
used in the HVACR trade? 2. The pictorial diagram
3. The installation diagram
3. Describe the characteristics of a ladder diagram 1. Provides the most help-
ful information for electri-
cal troubleshooting
2. The intention of the
overall schematic is to
show how the circuit func-
tions not how it actually
looks.
4. Describe the characteristics of a pictorial diagram 1. Usually includes draw-
ings that more closely re-
semble the components
themselves rather than the
symbols.
, Nate core exam 2025 GRADED A LATEST VERSION QUESTIONS
AND ANSWERS
2. Provides the best indi-
cation of the actual posi-
tions of the components in
the equipment or control
panel.
5. Describe the characteristics of an installation diagram 1. Used primarily By the
person installing equip-
ment
2. It normally only shows
what the terminal board
connections are and may
or may not include any in-
ternal wiring of the unit
3. Field wiring General-
ly represented as Dashed
lines.
4. Thicker lines rep-
resent line voltage
wiring(120/240 V)
5. Thin lines represent
low-voltage control wiring
6. What is a switch? A switch is a device that
interrupts power to the
load. It may be manually
or automatically activated
by pressure, temperature
or it may be an electrically
controlled switch
7. What is a load?
, Nate core exam 2025 GRADED A LATEST VERSION QUESTIONS
AND ANSWERS
A load is a device that con-
sumes power and con-
verts it into some other
form of energy
8. Describe the side-by-side arrangement four wire dia- Usually arranges motors
grams and other power consum-
ing components on the
right side of the diagram
called the "load" side. The
switches and other con-
trollers are placed on the
left side of the diagram
called the "line"side.
9. Describe the up and down schematic arrangement This type of arrangement
divides the schematic in to
high-voltage and low-volt-
age sections. Normally the
high voltage section is
placed on the top and the
low voltage is placed on
the bottom of the dia-
gram.
10. What are the two basic configurations used in Side by side arrange-
schematics? ment and up and down
arrangement
11. A particular right triangle that has two equal sides. 45°- 45°-90°right triangle
This is a?
12.
AND ANSWERS
2. What are the three basic types of wiring diagrams 1. The ladder diagram
used in the HVACR trade? 2. The pictorial diagram
3. The installation diagram
3. Describe the characteristics of a ladder diagram 1. Provides the most help-
ful information for electri-
cal troubleshooting
2. The intention of the
overall schematic is to
show how the circuit func-
tions not how it actually
looks.
4. Describe the characteristics of a pictorial diagram 1. Usually includes draw-
ings that more closely re-
semble the components
themselves rather than the
symbols.
, Nate core exam 2025 GRADED A LATEST VERSION QUESTIONS
AND ANSWERS
2. Provides the best indi-
cation of the actual posi-
tions of the components in
the equipment or control
panel.
5. Describe the characteristics of an installation diagram 1. Used primarily By the
person installing equip-
ment
2. It normally only shows
what the terminal board
connections are and may
or may not include any in-
ternal wiring of the unit
3. Field wiring General-
ly represented as Dashed
lines.
4. Thicker lines rep-
resent line voltage
wiring(120/240 V)
5. Thin lines represent
low-voltage control wiring
6. What is a switch? A switch is a device that
interrupts power to the
load. It may be manually
or automatically activated
by pressure, temperature
or it may be an electrically
controlled switch
7. What is a load?
, Nate core exam 2025 GRADED A LATEST VERSION QUESTIONS
AND ANSWERS
A load is a device that con-
sumes power and con-
verts it into some other
form of energy
8. Describe the side-by-side arrangement four wire dia- Usually arranges motors
grams and other power consum-
ing components on the
right side of the diagram
called the "load" side. The
switches and other con-
trollers are placed on the
left side of the diagram
called the "line"side.
9. Describe the up and down schematic arrangement This type of arrangement
divides the schematic in to
high-voltage and low-volt-
age sections. Normally the
high voltage section is
placed on the top and the
low voltage is placed on
the bottom of the dia-
gram.
10. What are the two basic configurations used in Side by side arrange-
schematics? ment and up and down
arrangement
11. A particular right triangle that has two equal sides. 45°- 45°-90°right triangle
This is a?
12.
