NATE Core Exam Newest Updated 150 Questions And Correct Answers From Actual Past Papers Exams (Graded A+) Plus Rationales 2025|2026 Q&A | Instant Download Pdf

NATE Core Exam Newest Updated 150
Questions And Correct Answers From
Actual Past Papers Exams (Graded A+)
Plus Rationales 2025|2026 Q&A |
Instant Download Pdf
1. What is the primary purpose of personal protective equipment (PPE)?
A. Improve work speed
B. Reduce equipment costs
C. Protect workers from hazards
D. Increase efficiency
Answer: C. Protect workers from hazards
PPE is designed to minimize exposure to workplace hazards that can cause
injury or illness.
2. Which electrical unit measures resistance?
A. Volt
B. Ampere
C. Ohm
D. Watt
Answer: C. Ohm
Resistance is the opposition to current flow and is measured in ohms.
3. What does a multimeter measure?
A. Only voltage
B. Only resistance
C. Voltage, current, and resistance
D. Temperature only

, Answer: C. Voltage, current, and resistance
A multimeter is a versatile tool used for multiple electrical measurements.
4. What is the boiling point of water at sea level?
A. 100°F
B. 32°F
C. 212°F
D. 180°F
Answer: C. 212°F
Water boils at 212°F under standard atmospheric pressure.
5. What is the freezing point of water?
A. 0°F
B. 32°F
C. 50°F
D. 212°F
Answer: B. 32°F
Water freezes at 32°F under normal conditions.
6. What does HVAC stand for?
A. Heating, Ventilation, and Air Conditioning
B. Heat, Vacuum, and Cooling
C. High Voltage Air Control
D. Heat and Ventilation Control
Answer: A. Heating, Ventilation, and Air Conditioning
HVAC refers to systems used for indoor environmental comfort.
7. What type of current is used in most homes?
A. Direct current
B. Alternating current
C. Static current
D. Pulsed current
Answer: B. Alternating current
Homes use AC because it is efficient for power distribution.

,8. Which tool is used to measure temperature?
A. Voltmeter
B. Thermometer
C. Manometer
D. Ammeter
Answer: B. Thermometer
A thermometer measures temperature accurately.
9. What is voltage?
A. Flow of electrons
B. Electrical pressure
C. Resistance
D. Power usage
Answer: B. Electrical pressure
Voltage pushes electrical current through a circuit.
10.What does an ammeter measure?
A. Voltage
B. Resistance
C. Current
D. Pressure
Answer: C. Current
An ammeter measures the flow of electrical current.
11.What is a circuit?
A. A power source
B. A complete path for electricity
C. A resistor
D. A fuse
Answer: B. A complete path for electricity
A circuit must be complete for current to flow.
12.What is power measured in?
A. Volts

, B. Amps
C. Watts
D. Ohms
Answer: C. Watts
Power is the rate of energy use.
13.What does a fuse do?
A. Increases current
B. Stores electricity
C. Protects circuits from overload
D. Measures voltage
Answer: C. Protects circuits from overload
A fuse breaks the circuit when current exceeds safe levels.
14.What is a conductor?
A. Blocks electricity
B. Allows electricity to flow
C. Stores electricity
D. Measures current
Answer: B. Allows electricity to flow
Conductors have low resistance to electrical flow.
15.What is an insulator?
A. Conducts electricity
B. Resists electricity
C. Generates power
D. Stores voltage
Answer: B. Resists electricity
Insulators prevent the flow of electrical current.
16.What is the unit of current?
A. Volt
B. Ampere
C. Ohm