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NATE CORE EXAM QUESTIONS AND ANSWERS 2024 $17.99   Add to cart

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NATE CORE EXAM QUESTIONS AND ANSWERS 2024

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NATE CORE EXAM QUESTIONS AND ANSWERS 2024

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  • October 17, 2024
  • 18
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NATE CORE
  • NATE CORE
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Teacher101
NATE CORE EXAM

The normal dividing line for voltage changes in a schematic is the
___________________ - ANSWERS-Transformer



The part of a schematic that lists and explains the system components is called
the ______________ - ANSWERS-Legend



Relays and contactors are ______________________ control switches -
ANSWERS-Electrically operated



A _______________ circuit allows the same current to flow through all of the
components - ANSWERS-Series



A _____________ circuit has multiple paths for current flow - ANSWERS-Parallel



What types of circuits are primarily used in control and safety applications? -
ANSWERS-Series-parellel



When testing with a voltmeter, you should place the meter _________________ -
ANSWERS-In parallel with the circuit being tested

,What does a resistance reading of 0 ohms mean? - ANSWERS-There is a short
circuit



When you use an ohmmeter, the circuit being measured must be
__________________ - ANSWERS-Isolated from all energy sources



When you test a switch with an ohmmeter, a reading of _______________
indicates that the switch is closed - ANSWERS-0 ohms



ON all meters, digital and analog, the scale used should indicate the measurement
_________________ - ANSWERS-Close to the middle of the range



When testing across a closed switch in an energized circuit, you should read
_______________ - ANSWERS-0 V AC



When using a standard clamp-on ammeter, you should _________________
before taking a reading - ANSWERS-Make sure that the jaws are closed



When testing compressor windings, you take the following readings: C to R: 2
ohms, C to S: infinite resistance, R to S: infinite resistance.... What is the
diagnosis? - ANSWERS-The start winding is open



Capacitance meters must be used on capacitors _________________ - ANSWERS-
That have been removed from the circuit

, When testing a thermostat wire that has been removed from the circuit, you
measure 0 ohms between red and white. This indicates that _________________
- ANSWERS-There is a short



When testing with an ammeter, you should place the meter
____________________ - ANSWERS-In series with the circuit being tested



Lever tubing benders are best used for: - ANSWERS-Soft drawn copper tubbing



The primary purpose for bringing outdoor air into residential air distribution
system is to: - ANSWERS-Provide fresh air to a conditioned space



What motor design is used on a variable speed motor? - ANSWERS-Brushless DC



Assuming that a circuit is energized, what voltage will be read across an open
switch? - ANSWERS-Applied voltage



The input side of a step-down transformer is also properly called the: - ANSWERS-
primary side



Electrical current is measured in - ANSWERS-amperes

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