The piston port has a tendency to backfire at low speeds. A True B False

What does the 0 thermostat terminal energize on most heat pumps? Select one: A. The reversing valve B. The electric heat strips C. The indoor fan D. The compressor contactor

Which of the following determines what coil will be the evaporator in the heating or cooling process? Select one: A. The coil connected to the uncovered port B. The coil that is connected to the permanent suction C. The coil that has its port covered by the sliding valve D. The indoor coil that is always connected

Which of the following characteristics are related to diagnostic trouble codes? Select all that apply. a) They are specific to electronic sensors. b) They describe a problem affecting a system of the engine. c) They have the potential to cause engine damage if left unaddressed. d) They occur when signals to an ECM fall outside of expected operating range.

The purpose of an engine's water pump is to A separate water from the coolant. B force coolant into the water jacket. C inject water into the engine coolant. D extract water vapor from the air to cool the engine. D

Q4: Which type of circuit is generated by the alternator during the vehicle's operation? AC voltage B+ voltage Reference voltage Ignition voltage

Q3: What do low reference circuits provide through a control module? A. Low voltage B. Ground C. AC D. Signal

Q2: Which of the following circuits are usually bidirectional and provide digitally encoded information between two or more control modules? A. Signal circuits B. Voltage circuits C. Ground circuits D. Control circuits E. Serial data circuits

ABS braking in an emergency, will cause all 4-wheels to lock in a skid? True False

New and improved tools and technologies exist that help prevent inadvertent contact with underground energized utilities and they include: A. Non-conductive tools B. Non-conductive backhoe buckets C. Ground Penetrating Radar D. Underground 3-D imaging E. All the above

Hot Questions

What determines the maximum fuel outlet pressure from a mechanical diaphragm pump? a. Fuel line restriction b. Engine rpm c. Spring force d. Return check valve

How can a process technician prevent a dust explosion? A Remove moisture B Add moisture C Open a window D Keep particles in a contained area

A pressure switch is rated according to its __ pressure range. operating resting maximum minimum

Q1: Which of the following steps are NOT part of a transfer case fluid inspection? 1. Locate the oil fill plug on the transfer case and remove it using air tools. 2. Use your finger to check the oil level in the fill plug hole. 3. Add the correct amount and type of fluid if necessary. 4. Reinstall the transfer case fill plug hole and tighten to specification.

You need to install a pull box in a run of conduit.The conduit contains twenty 18 AWG wires . What is the minimum size $4''$ square box you could use? Use the following table to determine the MINIMUM size $4''$ square box required.

Pipe wrenches usually come in different sizes which are located: It doesn't matter what size the wrench is it'll work anyways. On the side of the wrench. On the internet.

A-CAC melts the base metal with a high-current electric arc between the base metal and the end of a(n) __ a) high-frequency pilot arc b) idle arc c) carbon-graphite electrode d) plasma jet

The electronic variable displacemen compressor is based on what type of compressor design? A Rotary compressor design B Swash plate compressor design C Scroll compressor design D Vane compressor design

Which is a safety procedure related to fire hose testing? Always wear full structural PPE Only use portable tanks as a water source Only walk near pressurized hose when necessary Always test hoses in lengths greater than 300 feet (100 m)

a system with low duty factor is imaging at a __ depth than a system with high duty factor. shallower Cannot be determinec using this information deeper Duty Factor and depth are not related