Title: Unit 8 Quiz
Course: HET 194 NATE Certification Preparation - Spring 2015 > Section: HET 194 NATE Certification Preparation - Spring 2015

Q: On all meters, digital and analog, the scale used should indicate the measurement _______.
- close to the bottom of the fange
- close to the middle of the range
- close to the top of the range
- anywhere within the range
A: anywhere within the range

Q: 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?
- The compressor is good
- The run winding is shorted
- The start winding is shorted
- The start winding is open
A: The start winding is open

Q: A wiring and crimping tool is used to ____.
- crimp tubing
- cut and strip wire
- staple low voltage wire
- fasten insulation to duct
A: cut and strip wire

Q: When testing a thermostat wire that has been removed from the circuit, you measure 0 ohms between red and white. This indicates that _______.
- the transformer is bad
- A ewe or doe that is not bred
- there is high resistance in the wire
- there is a short
A: there is a short

Q: When using a standard clamp-on ammeter, you should _______ before taking a reading.
- disconnect all of the wires in the circuit being tested
- make sure that the jaws are closed
- make sure that the jaws are open
- shut down and lock out the equipment being tested
A: make sure that the jaws are closed

Q: What does a resistance reading of 0 ohm indicate?
- The circuit is open
- The meter needs a new battery
- The meter needs to be recalibrated
- There is a short circuit
A: There is a short circuit

Q: A gauge and manifold assembly used in refrigeration work may include ____.
- compound gauge, standard gauge, manifold, valves and hoses
- either two or four valves
- a four-way valve design using a shutoff valve for each hose
- all of the above
A: all of the above

Q: A sling psychrometer ____.
- measures the dry-bulb and wet-bulb temperatures of air
- measures the air velocity through a duct
- uses a microprocessor to provide information for proper air balance
- measures the quantity of air, in cfm, flowing through a duct
A: measures the dry-bulb and wet-bulb temperatures of air

Q: The halide leak detector ____.
- detects nitrogen leaks in the refrigeration system
- is used to detect water leaks in a chilled water system
- detects refrigerant leaks in a refrigeration system
- detects air leaks in duct systems
A: detects refrigerant leaks in a refrigeration system