Electrical
In this type of electrical circuit, the loads depend on each other to operate.
What is a series circuit?
Under average conditions, the ideal mixture of antifreeze and water in a vehicle’s cooling system is this ratio, which helps prevent freezing, boiling, and corrosion.
What is 50-50?
This piece of personal protective equipment must be worn at all times in the automotive shop to protect your eyes from debris, chemicals, and flying objects.
What are safety glasses?
This is used to check the oil level in an engine with the engine off.
What is oil dipstick?
This engine component converts the up-and-down motion of the pistons into rotational motion to turn the vehicle’s wheels.
What is a crankshaft?
Using Ohm’s Law, if a circuit has a 12-volt battery and a total resistance of 4 ohms, the amount of current, in amps, that flows through the circuit is determined.
What is 3 amps?
Before removing the radiator pressure cap for a pressure test, a technician should do this to avoid injury from hot coolant or system pressure.
What is check the system for pressure?
This colorless, odorless gas produced by running engines can quickly become deadly in an automotive shop if proper ventilation is not used.
What is Carbon Monoxide?
This warning indicator alerts the driver that the engine oil pressure is too low.
What is the engine oil warning light?
To check a cylinder head or engine block for warpage, a technician typically uses this tool along with a straightedge to measure uneven surfaces.
What is a feeler gauge?
This phenomenon occurs when a changing magnetic field around a conductor induces an electric current, which is the basic principle behind generators and transformers.
What is magnetic induction?
Before removing a serpentine belt to change a water pump, a technician should do this to ensure it can be properly reinstalled without mistakes.
If a vehicle begins to fall off a lift, your first action should be to do this to protect yourself and others.
What is move out of the way and warn others?
When inspecting the oil pan and valve cover gasket(s), technicians should check for this...
What are oil leaks leaks?
These two camshaft specifications describe how far the valve opens and how long it stays open, which affect engine performance and efficiency.
What is lift and duration?
In a series circuit, this electrical property stays the same at every point, even as voltage is divided among the loads.
What is amperage (current)?
When replacing an engine’s thermostat, this must also be replaced to ensure a proper seal and prevent leaks.
What is the thermostat seal and/or gasket?
Gloves that have been used to clean up blood after an accident must be handled this way to prevent the spread of infection or contamination.
What is disposed of in a hazardous waste container?
A spring-loaded valve in the lubrication system that opens when oil pressure becomes too high, protecting seals, gaskets, and engine components
What is an oil pressure relief valve?
These special cylinder head bolts are designed to stretch when torqued and must be replaced after removal because they cannot be reused.
What are torque to yield bolts?
If a fuse repeatedly blows even after replacement, it is likely that this issue is present somewhere in the circuit, often caused by damaged wiring or a faulty component.
What is a short to ground?
During a cooling system pressure test, the gauge reads 18 psi after being pressurized to the manufacturer’s spec of 15 psi, then slowly drops to 12 psi over 5 minutes. This indicates what about the system?
What is a slow leak in the cooling system?
If a chemical splashes into your eyes, refer to this document for proper treatment and first aid instructions.
What is Safety Data Sheet?
Main and connecting rod bearings are examples of this type of bearing that depend on constant pressurized oil lubrication to operate properly.
What are friction bearings?
During a compression test, one cylinder reads significantly lower than the others, but increases after a small amount of oil is added to the cylinder. This test result indicates this internal engine condition.
What are worn piston rings/cylinder walls?