All Categories MCQs
Topic Notes: All Categories
General Description
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
48941
What is a 'Compressor'?
Answer:
A device that increases the pressure of a gas by reducing its volume
A gas compressor is a mechanical device that increases the pressure of a gas by reducing its volume.
48942
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.
48943
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.
48944
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.
48945
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.
48946
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.
48947
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.
48948
What is 'Isobaric Process'?
Answer:
Process at constant pressure
An isobaric process is a thermodynamic process in which the pressure stays constant.
48949
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.
48950
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.