Question

Rankine cycle is used in:

• A. Gas turbines
• B. Steam power plants
• C. Refrigerators
• D. Automobiles

Hint:

Rankine cycle = steam power plants. It's the ideal cycle for converting heat to work using a vapor (like water).

Answer 1

The Correct Option is B

The Rankine cycle is a thermodynamic cycle that converts heat into mechanical work, and is the fundamental operating cycle for steam power plants.
It consists of the following main components:
- Boiler (heat addition),
- Turbine (expansion and work output),
- Condenser (heat rejection), and
- Pump (compression).
It works with a phase-changing working fluid (typically water), which makes it especially suitable for steam-based thermal power generation.
Incorrect options:
- (1) Gas turbines operate on the Brayton cycle.
- (3) Refrigerators operate on the reversed Rankine or vapor-compression cycle.
- (4) Automobiles typically use the Otto cycle (petrol) or Diesel cycle.