Nate core exam 2022| 160 QUESTIONS| WITH COMPLETE SOLUTIONS
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Course
Nate
Institution
Liberty University
What are the five basic components to any schematic? Correct Answer: 1. A power supply
2. A path for the power
3. A load or component that operates from the power.
4. A switch or component that interrupts the power to the load.
5. A legend or key that explains what the various symbols and abbr...
nate core exam 2022| 160 questions| with complete solutions
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Nate core exam 2022| 160 QUESTIONS| WITH
COMPLETE SOLUTIONS
What are the five basic components to any schematic? Correct Answer: 1. A power supply
2. A path for the power
3. A load or component that operates from the power.
4. A switch or component that interrupts the power to the load.
5. A legend or key that explains what the various symbols and abbreviations used in the
schematic mean.
What are the three basic types of wiring diagrams used in the HVACR trade? Correct Answer:
1. The ladder diagram
2. The pictorial diagram
3. The installation diagram
Describe the characteristics of a ladder diagram Correct Answer: 1. Provides the most helpful
information for electrical troubleshooting
2.The intention of the overall schematic is to show how the circuit functions not how it actually
looks.
Describe the characteristics of a pictorial diagram Correct Answer: 1. Usually includes drawings
that more closely resemble the components themselves rather than the symbols.
2. Provides the best indication of the actual positions of the components in the equipment or
control panel.
Describe the characteristics of an installation diagram Correct Answer: 1. Used primarily By the
person installing equipment
2. It normally only shows what the terminal board connections are and may or may not include
any internal wiring of the unit
3. Field wiring Generally represented as Dashed lines.
4. Thicker lines represent line voltage wiring(120/240 V)
5. Thin lines represent low-voltage control wiring
What is a switch? Correct Answer: 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
What is a load? Correct Answer: A load is a device that consumes power and converts it into
some other form of energy
Describe the side-by-side arrangement four wire diagrams Correct Answer: Usually arranges
motors and other power consuming components on the right side of the diagram called the "load"
side. The switches and other controllers are placed on the left side of the diagram called the
"line"side.
, Describe the up and down schematic arrangement Correct Answer: This type of arrangement
divides the schematic in to high-voltage and low-voltage sections. Normally the high voltage
section is placed on the top and the low voltage is placed on the bottom of the diagram.
What are the two basic configurations used in schematics? Correct Answer: Side by side
arrangement and up and down arrangement
A particular right triangle that has two equal sides. This is a? Correct Answer: 45°- 45°-90°right
triangle
Which of the following is typically represented by the two lines on the sides of a diagram?
Correct Answer: Each leg of the line or low voltage power
To change the direction of rotation of a three phase motor, it is necessary to? Correct Answer:
Reverse any two of the motor leads
The overload protection of a 10a and ma inputs of a digital used in HVAC work are? Correct
Answer: Always the same
As a general rule, a continuity check using an ohmmeter shows continuity by a reading of?
Correct Answer: At zero or a specific resistance
How is a voltmeter connected for taking a reading? Correct Answer: In parallel with the voltage
to be measured
A service company was blasted in a news article the employees were briefed in a company
meeting and the majority of them nothing was done wrong and supported the company. The
employees shown there were? Correct Answer: Loyal
The federal agency that oversees the transportation of pressurized cylinder is? Correct Answer:
DOT
The dictionary defines an honest person as one who is free from fraud or deception, which of the
following will hold true? Correct Answer: An honest person is fair and their dealings with other
people
A condition that must be met to make an agreement legally binding is? Correct Answer: The
agreement must include one promise in exchange for another
Which of the following expresses the difference between a feature in a benefit? Correct Answer:
A feature is a special characteristic of a product and a benefit is the value of the customer
receives from using the future
According to the health and safety regulations, when climbing up or down a ladder the worker
must? Correct Answer: Always face the ladder
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