General Knowledge MCQs
Topic Notes: General Knowledge
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
3851
What is a 'Turbine'?
Answer:
A rotary mechanical device that extracts energy from a fluid flow and converts it into useful work
A turbine is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work.
3852
What is 'Radiation' in heat transfer?
Answer:
Heat transfer via electromagnetic waves
Thermal radiation is electromagnetic radiation generated by the thermal motion of particles in matter. It does not require a medium.
3853
What is 'Convection' in heat transfer?
Answer:
Heat transfer by the macroscopic movement of a fluid
Convection is the transfer of heat from one place to another by the movement of fluids.
3854
What is 'Conduction' in heat transfer?
Answer:
Heat transfer through direct contact of molecules
Conduction is the transfer of heat between two parts of a stationary system, caused by a temperature difference between the parts.
3855
What is 'Enthalpy'?
Answer:
Total heat content of a system
Enthalpy is a property of a thermodynamic system, defined as the sum of the system's internal energy and the product of its pressure and volume. It represents the total heat content.
3856
What is 'Carnot Cycle'?
Answer:
A theoretical thermodynamic cycle that provides an upper limit on the efficiency of any thermodynamic engine
The Carnot cycle is a theoretical thermodynamic cycle proposed by Nicolas Léonard Sadi Carnot. It is the most efficient cycle possible.
3857
What is 'Isobaric Process'?
Answer:
Process at constant pressure
An isobaric process is a thermodynamic process in which the pressure stays constant.
3858
What is 'Isochoric Process'?
Answer:
Process at constant volume
An isochoric process, also called a constant-volume process, is a thermodynamic process during which the volume of the closed system undergoing such a process remains constant.
3859
What is 'Isothermal Process'?
Answer:
Process at constant temperature
An isothermal process is a thermodynamic process in which the temperature of the system remains constant.
3860
What is 'Adiabatic Process'?
Answer:
A process where no heat is transferred into or out of the system
An adiabatic process is one that occurs without transfer of heat or matter between a thermodynamic system and its surroundings.