Diesel Cycle
1 / 10
The Diesel cycle assumes:
 Explanation: The Diesel cycle assumes ideal gas behavior for analysis, unlike real gases or irreversible processes. Combustion is at constant pressure, not volume.
2 / 10
In the Diesel cycle’s adiabatic compression:
 Explanation: Adiabatic compression raises temperature via work input, unlike expansion or isothermal processes. No heat is added; volume decreases.
3 / 10
Compared to the Otto cycle, the Diesel cycle is:
 Explanation: For the same compression ratio, Diesel is less efficient due to constant-pressure heat addition, unlike Otto’s constant-volume. Efficiency depends on cycle specifics.
4 / 10
The Diesel cycle is typically modeled in:
Explanation: Piston-cylinders enable isobaric, isochoric, and adiabatic processes, unlike open systems or nozzles in flow cycles. Heat exchangers involve heat transfer.
5 / 10
The Diesel cycle’s heat rejection occurs at:
 Explanation: Heat rejection is isochoric, unlike constant-pressure in Brayton or isothermal in Carnot. Adiabatic processes involve no heat transfer.
6 / 10
The efficiency of the Diesel cycle depends on:
 Explanation: Efficiency depends on compression and cutoff ratios (η = 1 - 1/r^(γ-1)/[γ(r_c-1)/(r_c^γ-1)]), unlike temperature in Carnot or pressure in Brayton. Work is a result.
7 / 10
The adiabatic processes in the Diesel cycle involve:
 Explanation: Adiabatic compression and expansion have no heat transfer, unlike isobaric or isothermal processes. Volume and temperature change, not remain constant.
8 / 10
In the Diesel cycle, heat addition occurs at:
Explanation: Heat addition is isobaric (constant pressure), unlike constant-volume in Otto or isothermal in Carnot. Adiabatic processes have no heat.
9 / 10
The Diesel cycle consists of how many processes?
Explanation: The Diesel cycle includes two adiabatic, one isobaric, and one isochoric process, unlike cycles with fewer or more steps. Four processes define its structure.
10 / 10
The Diesel cycle is primarily used in:
 Explanation: The Diesel cycle models compression-ignition engines like diesel engines, unlike spark-ignition in Otto or gas turbines. Refrigeration uses other cycles.
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