Which statement is true regarding the reciprocating engine strokes and turbine sections?

Which statement is true regarding the reciprocating engine strokes and turbine sections?

• A. Intake = air inlet, compression = exhaust, ignition and power = combustion and turbine, exhaust = turbine.
• B. Intake = air inlet, compression = compressor, ignition and power = turbine, exhaust = exhaust.
• C. Ignition and power correspond to combustion and turbine.
• D. Intake = air inlet, compression = compressor, ignition and power = combustion and turbine, exhaust = exhaust.

Answer: (C)

In this topic, focus on where ignition and the power-producing work happen when you compare a piston engine cycle to a turbine section. The ignition event occurs in the combustion process, and the power output in a piston engine comes from the expansion of those combusted gases pushing the piston. In a turbine system, ignition occurs in the combustion chamber, and the energy from that combustion is then converted to shaft power by the turbine as the high-energy gases expand through it. So, the pairing of ignition with combustion and power with turbine correctly reflects how the two systems correspond, making that statement true. The other mappings—intake to air inlet, compression to compressor, and exhaust to exhaust—are part of the overall cycle, but they don’t capture this specific relationship between ignition/power and combustion/turbine.

In this topic, focus on where ignition and the power-producing work happen when you compare a piston engine cycle to a turbine section. The ignition event occurs in the combustion process, and the power output in a piston engine comes from the expansion of those combusted gases pushing the piston. In a turbine system, ignition occurs in the combustion chamber, and the energy from that combustion is then converted to shaft power by the turbine as the high-energy gases expand through it. So, the pairing of ignition with combustion and power with turbine correctly reflects how the two systems correspond, making that statement true. The other mappings—intake to air inlet, compression to compressor, and exhaust to exhaust—are part of the overall cycle, but they don’t capture this specific relationship between ignition/power and combustion/turbine.