Master Thermodynamics with Tables and Charts: A Comprehensive Guide

Question 1

Which of the following is the ideal gas equation?

Accepted Answer

PV = nRT

Answer

PV^n = constant

Answer

h = cpT

Answer

s = cvln(T) + Rln(v)

Question 2

What does the term 'isentropic process' refer to?

Accepted Answer

A process at constant entropy

Answer

A process at constant pressure

Answer

A process at constant temperature

Answer

A process at constant specific volume

Question 3

Which of the following is the equation for work done during a reversible isobaric process?

Accepted Answer

W = P(V2 - V1)

Answer

W = nRT(ln(V2/V1))

Answer

W = mcvdT

Answer

W = 0

Question 4

Which thermodynamic chart is specifically designed to determine the phase behavior of a pure substance?

Accepted Answer

Phase diagram

Answer

Enthalpy-entropy chart

Answer

Pressure-volume chart

Answer

Mollier diagram

Question 5

What is the SI unit of specific volume?

Accepted Answer

m^3/kg

Answer

kJ/kg

Answer

kg/m^3

Answer

kJ/(kg*K)

Question 6

What is the purpose of the saturation line on a pressure-enthalpy chart?

Accepted Answer

To indicate the states where liquid and vapor phases coexist.

Answer

To determine the critical point of the substance.

Answer

To calculate the specific volume of a substance.

Answer

To find the enthalpy of a substance at any temperature.

Question 7

What is the defining characteristic of a saturated liquid?

Accepted Answer

It can coexist with its vapor phase, while saturated vapor cannot.

Answer

It has a higher temperature than its corresponding saturated vapor.

Answer

It has a higher pressure than its corresponding saturated vapor.

Answer

It is a pure liquid, while saturated vapor is a mixture of liquid and gas.

Question 8

Which of the following interpolation methods is most accurate for obtaining property values from a thermodynamic table?

Accepted Answer

Cubic spline interpolation

Answer

Linear interpolation

Answer

Parabolic interpolation

Answer

Extrapolation

Question 9

Which of the following is NOT a type of thermodynamic table or chart commonly used in thermodynamics?

Accepted Answer

Periodic table

Answer

Pressure-enthalpy diagram

Answer

Steam table

Answer

Mollier diagram

Question 10

In a closed thermodynamic system, which of the following occurs?

Accepted Answer

Energy transfer across the system boundaries

Answer

Mass transfer across the system boundaries

Answer

Entropy always decreasing within the system

Question 11

What is the primary advantage of using thermodynamic tables compared to property charts for determining substance properties?

Accepted Answer

Tables provide precise numerical values for properties at specific states.

Answer

Tables are more visually appealing.

Answer

Tables are easier to interpret than charts.

Question 12

A saturated liquid-vapor mixture of water exists at 100 kPa. What does the quality (x) of the mixture represent?

Accepted Answer

The mass fraction of vapor in the mixture.

Answer

The enthalpy of the mixture.

Answer

The temperature of the mixture.

Answer

The specific volume of the mixture.

Question 13

To determine the enthalpy of superheated steam at 500 kPa and 300 °C, which thermodynamic table would you use?

Accepted Answer

Superheated steam table.

Answer

Saturated water table.

Answer

Ideal gas table.

Answer

Compressed liquid table.

Question 14

A process where a substance's temperature remains constant while its pressure increases is called a(n):

Accepted Answer

Isothermal process

Answer

Isentropic process

Answer

Adiabatic process

Answer

Isobaric process

Question 15

What is the main advantage of using property charts over thermodynamic tables for understanding substance properties?

Accepted Answer

Charts provide a visual representation of property relationships, aiding in understanding trends.

Answer

Charts are more accurate than tables.

Question 16

A process where a system's entropy remains constant is known as a(n):

Accepted Answer

Isentropic process

Answer

Isothermal process

Answer

Adiabatic process

Answer

Isobaric process