Question

technician a says that understanding the laws of thermal dynamics and physics can help in engine diagnostics. technician b says that pressure and temperature rise are directly proportional. who is correct?

○ a. technician a
○ b. technician b
○ c. both technician a and technician b
○ d. neither technician a nor technician b

Explanation:

• For Technician A: Engine diagnostics involves understanding how heat (thermodynamics) and physical principles (physics) affect engine operation, so this statement is correct.
• For Technician B: According to gas laws (e.g., ideal gas law \(PV = nRT\)), for a fixed amount of gas (in a closed engine cylinder, approximately), pressure (\(P\)) and temperature (\(T\)) are directly proportional when volume (\(V\)) is constant (which is relevant in engine cycles). So this statement is also correct. Thus, both are correct.

Answer:

c. Both Technician A and Technician B