aa Mechanical Engineering Archives - Page 6 of 9

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501. What is an entropy-temperature diagram?
502. Explain entropy change during phase transitions.
503. What is the difference between entropy and enthalpy?
504. What are lost work and irreversibility in thermodynamic processes?
505. Explain the concept of available energy in thermodynamics.
506. What is Helmholtz free energy?
507. What is Gibbs free energy, and why is it important?
508. What are the limitations of the first law of thermodynamics?
509. How does the first law of thermodynamics apply to heat exchangers?
510. How does the first law of thermodynamics apply to compressors?
511. How does the first law of thermodynamics apply to turbines?
512. Explain the energy balance equation for a control volume.
513. What is the steady flow energy equation (SFEE)?
514. What are steady-flow and unsteady-flow processes?
515. What is an isochoric process?
516. Explain an isobaric process with an example.
517. What is an isothermal process?
518. What are throttling processes, and where are they used?
519. What is meant by an adiabatic process?
520. What are the assumptions of an ideal thermodynamic cycle?
521. What are cyclic and non-cyclic processes?
522. What is the difference between a homogeneous and a heterogeneous thermodynamic system?
523. What are the key differences between a closed system and an open system in thermodynamics?
524. How does the first law of thermodynamics apply to nozzles and diffusers?
525. What is meant by irreversibility in thermodynamics?
526. How does a heat exchanger
527. What is the function of a turbine in power plants?
528. What is a Stirling engine?
529. How does thermodynamics apply to energy storage systems?
530. What is meant by specific heat
531. How does combustion occur in a thermal system?
532. What is thermal expansion, and how does it affect materials?
533. What are refrigerants, and why are they important?
534. Explain the working of an air conditioning system.
535. What is the function of an evaporator in a refrigeration system?
536. What is relative humidity?
537. What is psychrometry?
538. What is the working principle of an absorption refrigeration system?
539. What is the difference between a heat pump and a refrigerator?
540. What is a coefficient of performance (COP) in refrigeration?
541. Explain the working principle of a vapor compression refrigeration cycle.
542. What is a refrigeration cycle?
543. What is a steam boiler, and what are its types?
544. How does a steam turbine work?
545. What is the critical point in steam properties?
546. Explain the concept of saturation temperature and pressure.
547. What is latent heat of vaporization?
548. What are steam tables, and how do they help in thermodynamic calculations?
549. What is a Mollier diagram, and how is it used?
550. What is steam quality, and why is it important?
551. Define dry steam, wet steam, and superheated steam.
552. What is steam, and how is it generated?
553. How does waste heat recovery improve efficiency in power plants?
554. What is the working principle of a nuclear power plant?
555. What are the advantages of a cogeneration system?
556. What is the significance of a combined cycle power plant?
557. What is meant by thermal efficiency of a heat engine?
558. Explain the working principle of a diesel engine.
559. What is a gas turbine power plant?
560. How does a steam power plant work?
561. What are the two main types of heat engines?
562. What is a heat engine?
563. How do real gases deviate from ideal gases?
564. What is the compressibility factor?
565. How does Avogadro’s law relate to gases?
566. What is Dalton’s law of partial pressures?
567. What is the significance of the specific heat ratio (γ)?
568. Explain the combined gas law.
569. What is Charles’s law?
570. Explain Boyle’s law with an example.
571. is the ideal gas law equation?
572. What is an ideal gas?
573. Explain the concept of regeneration in thermodynamic cycles.
574. What is meant by thermal efficiency?
575. What is the difference between the Otto cycle and Diesel cycle?
576. Explain the working of an Otto cycle.
577. What is a Brayton cycle?
578. How is efficiency calculated in the Rankine cycle?
579. What is the Rankine cycle?
580. What are the assumptions made in Carnot cycle analysis?
581. Explain the Carnot cycle and its significance.
582. What is a thermodynamic cycle?
583. What is the principle of increase of entropy?
584. What is entropy balance, and how is it applied?
585. How is entropy related to the irreversibility of a process?
586. What is the difference between exergy and anergy?
587. How does entropy affect the efficiency of thermodynamic systems?
588. What is an isentropic process?
589. Define exergy and explain its significance.
590. What is entropy generation, and when does it occur?
591. Explain the concept of entropy change in a closed system.
592. What is entropy, and why is it called a measure of disorder?
593. What is Fourier’s law of heat conduction?
594. What is convection, conduction, and radiation?
595. Explain the concept of thermal conductivity.
596. What are polytropic processes? Give examples.
597. What is meant by reversible and irreversible processes?
598. What is enthalpy, and why is it important?
599. Explain the concept of internal energy in a thermodynamic system.
600. What is the difference between heat and work in thermodynamics?

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