What thermodynamic cycle does a steam engine work on_________________?
Show answer Hide answer
Answer: D. brayton cycle
Explanation
A steam engine works on the Rankine cycle, which involves the expansion of steam through a piston or turbine.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
Related questions
Q1. How does the presence of non-condensable gases affect the actual condensing pressure relative to the required pressure without them ____________________ ?
Show answer Hide answer
Answer: A. will be higher
The presence of non-condensable gases increases the total condensing pressure in a system. Dalton Law of partial pressures states that total pressure equals the sum of individual gas pressures. Trapped air adds its own p...
Q2. In SI units, the specific weight of water is equal to ________________?
Show answer Hide answer
Answer: C. 9.81 xlO3 N/m3
The specific weight of a fluid is calculated by multiplying its mass density by gravitational acceleration. For water, the standard density is approximately one thousand kilograms per cubic meter. Multiplying one thousan...
Q3. Where does structural failure occur when a cantilever beam's end load is increased___________________?
Show answer Hide answer
Answer: D. anywhere
Structural failure in a loaded cantilever beam can occur anywhere along its span where the bending moment exceeds the material's capacity. While maximum bending moment concentrates at the fixed support, material defects...
Q4. How is steel produced from phosphatic iron classified_________________?
Show answer Hide answer
Answer: A. brittle
High phosphorus content in iron makes the resulting steel cold-short and brittle. Phosphorus dissolves in ferrite and increases hardness while drastically reducing impact toughness. Phosphoric iron creates steel prone to...
Q5. Up to what vertical height can a particle remain at rest inside a hollow sphere of radius r with a friction coefficient -rr___________________?
Show answer Hide answer
Answer: D. 0.134 r
A particle remaining at rest inside a rough hollow sphere is limited by friction. Mathematical analysis of equilibrium forces and friction coefficients yields the height limit. The vertical height restriction depends dir...
Q6. Where is the exhaust steam from a high-pressure turbine routed for reheating _____________________?
Show answer Hide answer
Answer: E. a separate coil located in convection path
High-pressure steam requires reheating to improve thermodynamic cycle efficiency and prevent excessive moisture in turbine blades. The convection path of a boiler provides the necessary high-temperature flue gases for ef...