
Thermal Engineering Fundamentals
Quiz
•
English
•
University
•
Practice Problem
•
Hard
Mr. Swami
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first law of thermodynamics?
The total energy in a closed system is always increasing.
Heat is always converted to work: Q = W.
Energy conservation principle: ΔU = Q - W.
Energy cannot be created or destroyed: E = mc².
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain the concept of enthalpy in thermodynamics.
Enthalpy is the measure of a system's temperature only.
Enthalpy is the energy required to change the state of a substance.
Enthalpy is the total heat content of a system, defined as H = U + PV, where H is enthalpy, U is internal energy, P is pressure, and V is volume.
Enthalpy is the difference between kinetic and potential energy in a system.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is Bernoulli's principle in fluid mechanics?
Bernoulli's principle describes the relationship between the speed of a fluid and its pressure, indicating that higher fluid speed results in lower pressure.
Bernoulli's principle states that pressure increases with fluid speed.
Bernoulli's principle applies only to gases, not liquids.
Bernoulli's principle indicates that fluid speed and pressure are unrelated.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Define viscosity and its significance in fluid flow.
Viscosity is a measure of a fluid's resistance to flow, significant for determining flow behavior and energy loss in fluid systems.
Viscosity is the speed at which a fluid flows through a pipe.
Viscosity measures the color of a fluid in motion.
Viscosity is the temperature of a fluid affecting its density.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the three main methods of energy conversion?
Radiant conversion
Mechanical conversion, Thermal conversion, Chemical conversion
Nuclear conversion
Electrical conversion
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Describe the process of conduction in heat transfer.
Conduction is the transfer of heat through direct contact of particles in a material.
Conduction requires a vacuum to occur.
Conduction is the transfer of heat through radiation.
Conduction occurs only in gases and liquids.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between specific heat and latent heat?
Specific heat is the heat required to melt a substance.
Specific heat relates to temperature change, while latent heat relates to phase change.
Specific heat and latent heat are the same concept.
Latent heat is the heat required to raise the temperature of a substance.
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