M08 MIDTERM EXAM QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2026

M08 MIDTERM EXAM QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2026 The Clean Air Act is being discussed. Technician A says the Montreal Protocol is one of the results of the Clean Air Act. Technician B says it gave the EPA authority to control refrigerants in order to protect the environment. Who is correct? Technician A only Technician B only Both A and B Neither A nor B - Answers Technician B only George H. W. Bush signed the Clean Air Act amendment of 1990 into law that placed strict regulations on CFC emissions. True False - Answers True Technician A says the MSDS lists when the hazardous material was purchased by the shop. Technician B says the MSDS lists the protective clothing or equipment for that material. Who is correct? Technician A only Technician B only Both A and B Neither A nor B - Answers Technician B only Technician A says UV radiation inhibits the human body's immune system and causes skin tissue damage. Technician B says the release of CFCs into the atmosphere could help decrease the greenhouse effect. Who is correct? Technician A only Technician B only Both A and B Neither A nor B - Answers Technician A only In the greenhouse effect what type of radiation is re-emitted by the earth's surface and is absorbed and reflected by greenhouse gas molecules in the atmosphere warming the earth's surface and lower atmosphere? Ultraviolet Infrared Gama Nuclear - Answers Infrared All of the following are true of voltage drops EXCEPT: Voltage drop is the conversion of electrical energy into another form of energy. Corrosion in a circuit does not cause a voltage drop. All of the source voltage in a circuit must be dropped. Voltage drop can be measured with a voltmeter. - Answers Corrosion in a circuit does not cause a voltage drop. All of the following statements about heat transfer are true, EXCEPT: Molecular motion is transmitted to molecules that have less motion. Some of the molecules give up their energy to other molecules that have more energy. Heat flows from matter at a higher temperature to matter at a lower temperature. Heat never flows from low-temperature matter to high-temperature matter. - Answers Some of the molecules give up their energy to other molecules that have more energy. Evaporation is being discussed. Technician A says heat is lost when evaporation occurs. Technician B says the rate of evaporation is not affected by air movement. Who is correct? Technician A only Technician B only Both A and B Neither A nor B - Answers Technician A only Technician A says sensible heat can be measured. Technician B says specific heat is the amount of heat required to change one pound of a substance by 1°F. Who is correct? Technician A only Technician B only Both A and B Neither A nor B - Answers Both A and B Heat required to turn water into steam is latent heat. True False - Answers True Technician A says voltage will not exist between any two points in a circuit if the potential is zero. Technician B says corrosion is NOT a contributing factor to voltage drop. Who is correct? Technician A only Technician B only Both A and B Neither A nor B - Answers Technician A only A test light is ideal for checking for voltage on a digital circuit with low-current. True False - Answers False In a series circuit which of the following statements is correct? The circuit amperage will increase as more resistance is added The total resistance is the sum of all the resistances in the circuit The total resistance is less than the lowest resistor All of the above - Answers The total resistance is the sum of all the resistances in the circuit All of the following concerning the use of jumper wires are true except: The jumper should be fused The jumper wire can be used to by-pass a switch The jumper wire can be used to by-pass the load device It can be used to supply an alternate ground circuit - Answers The jumper wire can be used to by-pass the load device When a 12-volt test light is touched into a harness connector for the blower motor circuit it lights. Following the harness toward the blower motor, the next connector is probed with no light. What does this indicate? Nothing is wrong An open load An open before the first connector An open circuit between the two connectors - Answers An open circuit between the two connectors If coolant is not reused, it must be disposed of or recycled in an environmentally safe manner. True False - Answers True Caustic cleaning solutions should not be used in ____ radiators. aluminum copper plastic any - Answers aluminum Some radiator fan motors will start and run without warning. True False - Answers True Technician A says the cooling system must be full for a pressure test to be effective. Technician B says the cooling system should never be pressurized beyond the specified pressure cap rating. Who is correct? Technician A only Technician B only Both A and B Neither A nor B - Answers Both A and B All of the following conditions could cause an engine coolant loss, EXCEPT: leaking engine head gasket. leaking transmission cooler lines. faulty radiator pressure cap. leaking transmission oil cooler. - Answers leaking transmission cooler lines. Technician A says Schrader-type valves on refrigerant system service fittings self-seal when the manifold hoses are removed. Technician B says HFC-134a manifold hoses use quick disconnect couplers for attaching to the refrigerant system service fittings. Who is correct? Technician A only Technician B only Both A and B Neither A nor B - Answers Both A and B Where in the system is the receiver dryer located? on the inlet to the condenser. on the outlet of the evaporator. on the outlet of the condenser. none of the above. - Answers on the outlet of the condenser.