A thermodynamic process in which entropy is conserved  a. isentropic  b. adiabatic  c. isothermal  d. polytropic

A thermodynamic process in which
entropy is conserved
 a. isentropic
 b. adiabatic
 c. isothermal
 d. polytropic
by

1 Answer

Answer :

isentropic
by

Related questions

Occurring at fixed temperature  a. isentropic  b. Adiabatic  c. Isothermal  d. polytropic

Description : Occurring at fixed temperature  a. isentropic  b. Adiabatic  c. Isothermal  d. polytropic

Last Answer : Isothermal

One for which no heat is gained or lost  a. Isentropic  b. Adiabatic  c. Isothermal  d. Polytropic

Description : One for which no heat is gained or lost  a. Isentropic  b. Adiabatic  c. Isothermal  d. Polytropic

Last Answer : Adiabatic

When the expansion of compression of gas takes place without transfer of heat to or from the gas the process is called  a. reversible  b. adiabatic  c. polytropic  d. isothermal

Description : When the expansion of compression of gas takes place without transfer of heat to or from the gas the process is called  a. reversible  b. adiabatic  c. polytropic  d. isothermal

Last Answer : adiabatic

A process, in which the temperature of the working substance remains constant during its expansion or compression, is called  A. isothermal process  B. hyperbolic process  C. adiabatic process  D. polytropic process

Description : A process, in which the temperature of the working substance remains constant during its expansion or compression, is called  A. isothermal process  B. hyperbolic process  C. adiabatic process  D. polytropic process

Last Answer : Answer: A

The value of n = 1 in the polytropic process indicates it to be  (a) reversible process  (b) isothermal process  (c) adiabatic process  (d) irreversible process  (e) free expansion process.

Description : The value of n = 1 in the polytropic process indicates it to be  (a) reversible process  (b) isothermal process  (c) adiabatic process  (d) irreversible process  (e) free expansion process.

Last Answer : Answer : b

Another name of reversible adiabatic process  a. Isentropic Process  b. Isometric Process  c. Isobaric Process  d. Isothermal Process

Description : Another name of reversible adiabatic process  a. Isentropic Process  b. Isometric Process  c. Isobaric Process  d. Isothermal Process

Last Answer : Isentropic Process

A ______ is a flow in which the gas flow is adiabatic and frictionless and entropy change is zero.  A. Isentropic flow  B. Isobaric flow  C. Steady flow  D. Uniform flow

Description : A ______ is a flow in which the gas flow is adiabatic and frictionless and entropy change is zero.  A. Isentropic flow  B. Isobaric flow  C. Steady flow  D. Uniform flow

Last Answer : Isentropic flow

In the equation PVn = constant, if the value of n = y = Cp/Cv, then it represents a reversible __________ process. (A) Isothermal (B) Adiabatic (C) Isentropic (D) Polytropic

Description : In the equation PVn = constant, if the value of n = y = Cp/Cv, then it represents a reversible __________ process. (A) Isothermal (B) Adiabatic (C) Isentropic (D) Polytropic

Last Answer : (C) Isentropic

If there is no heat transferred during the process, it is called a ______ process.  A. Static  B. Isobaric  C. Polytropic  D. Adiabatic

Description : If there is no heat transferred during the process, it is called a ______ process.  A. Static  B. Isobaric  C. Polytropic  D. Adiabatic

Last Answer : Adiabatic

If value of n is infinitely large in a polytropic process pV” = C, then the process is known as constant  (a) volume  (b) pressure  (c) temperature  (d) enthalpy  (e) entropy

Description : If value of n is infinitely large in a polytropic process pV” = C, then the process is known as constant  (a) volume  (b) pressure  (c) temperature  (d) enthalpy  (e) entropy

Last Answer : Answer : a

During which of the following process does heat rejection takes place in Carnot cycle?  A. Isothermal expansion  B. Isentropic expansion  C. Isothermal compression  D. Isentropic compression

Description : During which of the following process does heat rejection takes place in Carnot cycle?  A. Isothermal expansion  B. Isentropic expansion  C. Isothermal compression  D. Isentropic compression

Last Answer : Answer: C

The index of compression n tends to reach ratio of specific heats y when  (a) flow is uniform and steady  (b) process is isentropic  (c) process is isothermal  (d) process is isentropic and specific heat does not change with temperature  (e) process is isentropic and specific heat changes with temperature.

Description : The index of compression n tends to reach ratio of specific heats y when  (a) flow is uniform and steady  (b) process is isentropic  (c) process is isothermal  (d) process ... specific heat does not change with temperature  (e) process is isentropic and specific heat changes with temperature.

Last Answer : Answer : d

It is a process during which the pressure remains constant  a. Adiabatic  b. Isentropic  c. Isobaric  d. Isotropic

Description : It is a process during which the pressure remains constant  a. Adiabatic  b. Isentropic  c. Isobaric  d. Isotropic

Last Answer : Isobaric

The process that has no heat transfer  a. Density  b. Isentropic Process  c. Isometric Process  d. Adiabatic

Description : The process that has no heat transfer  a. Density  b. Isentropic Process  c. Isometric Process  d. Adiabatic

Last Answer : Adiabatic

The term “isentropic process” used in thermodynamics implies what?  A. Reversible adiabatic process  B. Externally reversible, adiabatic process  C. Internally reversible, adiabatic process  D. Irreversible adiabatic process

Description : The term “isentropic process” used in thermodynamics implies what?  A. Reversible adiabatic process  B. Externally reversible, adiabatic process  C. Internally reversible, adiabatic process  D. Irreversible adiabatic process

Last Answer : Internally reversible, adiabatic process

“A reversible adiabatic process is necessarily isentropic but an isentropic process is not necessarily reversible adiabatic process.” This statement is:  A. True  B. False  C. May be true and may be false  D. Absurd

Description : “A reversible adiabatic process is necessarily isentropic but an isentropic process is not necessarily reversible adiabatic process.” This statement is:  A. True  B. False  C. May be true and may be false  D. Absurd

Last Answer : True

How does an adiabatic process compare to an isentropic process?  A. Adiabatic heat transfer is not equal to zero; isentropic heat transfer is zero  B. Both heat transfer = 0; isentropic: reversible  C. Adiabatic heat transfer = 0; isentropic: heat transfer is not equal to zero  D. Both heat transfer is not equal to zero; isentropic: irreversible

Description : How does an adiabatic process compare to an isentropic process?  A. Adiabatic heat transfer is not equal to zero; isentropic heat transfer is zero  B. Both heat transfer = 0; isentropic: reversible  ... is not equal to zero  D. Both heat transfer is not equal to zero; isentropic: irreversible

Last Answer : Both heat transfer = 0; isentropic: reversible

A heat exchange process in which the product of pressure and volume remains constant is known as  (a) heat exchange process  (b) throttling process  (c) isentropic process  (d) adiabatic process  (e) hyperbolic process.

Description : A heat exchange process in which the product of pressure and volume remains constant is known as  (a) heat exchange process  (b) throttling process  (c) isentropic process  (d) adiabatic process  (e) hyperbolic process.

Last Answer : Answer : e

A state occurs in isentropic process  a. The change in entropy is 0  b. The change in entropy is 1  c. The change in enthalpy is 0  d. The change in enthalpy is 1

Description : A state occurs in isentropic process  a. The change in entropy is 0  b. The change in entropy is 1  c. The change in enthalpy is 0  d. The change in enthalpy is 1

Last Answer : The change in entropy is 0

A process during which entropy remains constant is called ______ process  A. Isometric  B. Isochoric  C. Isobaric  D. Isentropic

Description : A process during which entropy remains constant is called ______ process  A. Isometric  B. Isochoric  C. Isobaric  D. Isentropic

Last Answer : Isentropic

_________ is a thermodynamic potential that measures the “useful” or process-initiating work obtainable from an isothermal, isobaric thermodynamic system.  a. Du-Pont Potential  b. Gibbs free energy  c. Rabz-Eccles Energy  d. Claussius Energy

Description : _________ is a thermodynamic potential that measures the “useful” or process-initiating work obtainable from an isothermal, isobaric thermodynamic system.  a. Du-Pont Potential  b. Gibbs free energy  c. Rabz-Eccles Energy  d. Claussius Energy

Last Answer : Gibbs free energy

The isothermal and isentropic processes are reversible non-flow processes.  A. Agree  B. Disagree

Description : The isothermal and isentropic processes are reversible non-flow processes.  A. Agree  B. Disagree

Last Answer : Answer: A

When the expansion of compression of gas takes place without transfer of heat or from the gas the process is called;  a. Isometric process  b. Isothermal process  c. Isobaric process  d. Adiabatic process

Description : When the expansion of compression of gas takes place without transfer of heat or from the gas the process is called;  a. Isometric process  b. Isothermal process  c. Isobaric process  d. Adiabatic process

Last Answer : Adiabatic process

If the value of n = 0 in the equation pvn = C, then the process is called  A. constant volume process  B. adiabatic process  C. constant pressure process  D. isothermal process

Description : If the value of n = 0 in the equation pvn = C, then the process is called  A. constant volume process  B. adiabatic process  C. constant pressure process  D. isothermal process

Last Answer : Answer: C

Which of the following processes is irreversible process  (a) isothermal  (b) adiabatic  (c) throttling  (d) all of the above  (e) none of the above.

Description : Which of the following processes is irreversible process  (a) isothermal  (b) adiabatic  (c) throttling  (d) all of the above  (e) none of the above.

Last Answer : Answer : c

During the adiabatic process, which of the following is the change in entropy?  a. zero  b. greater than zero  c. less than zero  d. infinity

Description : During the adiabatic process, which of the following is the change in entropy?  a. zero  b. greater than zero  c. less than zero  d. infinity

Last Answer : zero

During adiabatic, internally reversible process, what is true about the change in entropy?  A. It is temperature-dependent  B. It is always greater than zero  C. It is always zero  D. It is always less than zero

Description : During adiabatic, internally reversible process, what is true about the change in entropy?  A. It is temperature-dependent  B. It is always greater than zero  C. It is always zero  D. It is always less than zero

Last Answer : It is always zero

For reversible adiabatic process, change in entropy is  (a) maximum  (b) minimum  (c) zero  (d) unpredictable  (e) negative

Description : For reversible adiabatic process, change in entropy is  (a) maximum  (b) minimum  (c) zero  (d) unpredictable  (e) negative

Last Answer : Answer : c

Rankine cycle comprises of two isothermal and two __________ processes. (A) Isobaric (B) Polytropic (C) Isentropic (D) None of these

Description : Rankine cycle comprises of two isothermal and two __________ processes. (A) Isobaric (B) Polytropic (C) Isentropic (D) None of these

Last Answer : (D) None of these

Which of the following laws of thermodynamic which leads to the definition of entropy?  a. First law  b. Second law  c. Third law  d. Law of conservation of energy

Description : Which of the following laws of thermodynamic which leads to the definition of entropy?  a. First law  b. Second law  c. Third law  d. Law of conservation of energy

Last Answer : Second law

Which of the following laws of thermodynamic which leads to the definition of entropy?  a. First law  b. Second law  c. Third law  d. Law of conservation of energy

Description : Which of the following laws of thermodynamic which leads to the definition of entropy?  a. First law  b. Second law  c. Third law  d. Law of conservation of energy

Last Answer : Second law

Who discovered the thermodynamic property “Entropy” in 1865?  A. Zeroth law of thermodynamics  B. First law of thermodynamics  C. Second law of thermodynamics  D. Third law of thermodynamics

Description : Who discovered the thermodynamic property “Entropy” in 1865?  A. Zeroth law of thermodynamics  B. First law of thermodynamics  C. Second law of thermodynamics  D. Third law of thermodynamics

Last Answer : Second law of thermodynamics

Entropy change depends on  (a) heat transfer  (b) mass transfer  (c) change of temperature  (d) thermodynamic state  (e) change of pressure and volume.

Description : Entropy change depends on  (a) heat transfer  (b) mass transfer  (c) change of temperature  (d) thermodynamic state  (e) change of pressure and volume.

Last Answer : Answer : a

Which of the following engines is the most efficient?  a. Isobaric expansion  b. Adiabatic compression  c. Adiabatic expansion  d. Isothermal expansion

Description : Which of the following engines is the most efficient?  a. Isobaric expansion  b. Adiabatic compression  c. Adiabatic expansion  d. Isothermal expansion

Last Answer : Isobaric expansion

The Carnot cycle is composed of ______ processes.  A. One isothermal and one adiabatic  B. One isothermal and two adiabatic  C. Two isothermal and one adiabatic  D. Two isothermal and two adiabatic

Description : The Carnot cycle is composed of ______ processes.  A. One isothermal and one adiabatic  B. One isothermal and two adiabatic  C. Two isothermal and one adiabatic  D. Two isothermal and two adiabatic

Last Answer : Two isothermal and two adiabatic

Which of the following processes are thermodynamically reversible  (a) throttling  (b) free expansion  (c) constant volume and constant pressure  (d) hyperbolic and pV = C  (e) isothermal and adiabatic.

Description : Which of the following processes are thermodynamically reversible  (a) throttling  (b) free expansion  (c) constant volume and constant pressure  (d) hyperbolic and pV = C  (e) isothermal and adiabatic.

Last Answer : Answer : e

In __________ process, there is an increase in entropy with no degradation of energy. (A) Isothermal expansion (B) Isochoric heat addition (C) Polytropic expansion (D) Isobaric heat addition

Description : In __________ process, there is an increase in entropy with no degradation of energy. (A) Isothermal expansion (B) Isochoric heat addition (C) Polytropic expansion (D) Isobaric heat addition

Last Answer : (A) Isothermal expansion

Work done by a/an __________ process is determined by ∫p. dv (A) Adiabatic (B) Quasi-static (C) Isothermal (D) Isentropic

Description : Work done by a/an __________ process is determined by ∫p. dv (A) Adiabatic (B) Quasi-static (C) Isothermal (D) Isentropic

Last Answer : (B) Quasi-static

In a single stage reciprocating air compressor, the work done on air to compressor is from suction pressure to delivery pressure will be minimum when the compression is A. Isothermal process B. Adiabatic process C. Polytropic process D. Constant pressure process.

Description : In a single stage reciprocating air compressor, the work done on air to compressor is from suction pressure to delivery pressure will be minimum when the compression is A. Isothermal process B. Adiabatic process C. Polytropic process D. Constant pressure process.

Last Answer : ANSWER : A

In polytropic process (PV n = constant), if n = 1; it means a/an __________ process. (A) Adiabatic (B) Reversible (C) Isothermal (D) None of these

Description : In polytropic process (PV n = constant), if n = 1; it means a/an __________ process. (A) Adiabatic (B) Reversible (C) Isothermal (D) None of these

Last Answer : (C) Isothermal

The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible __________ process. (A) Isobaric (B) Isothermal (C) Adiabatic (D) None of these

Description : The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible __________ process. (A) Isobaric (B) Isothermal (C) Adiabatic (D) None of these

Last Answer : (B) Isothermal

In the equation, PVn = constant, if the value of n = 1, then it represents a reversible __________ process. (A) Isothermal (B) Isobaric (C) Polytropic (D) Adiabatic

Description : In the equation, PVn = constant, if the value of n = 1, then it represents a reversible __________ process. (A) Isothermal (B) Isobaric (C) Polytropic (D) Adiabatic

Last Answer : (A) Isothermal

The state of a thermodynamic system is always defined by its:  a. Absolute temperature  b. process  c. properties  d. temperature and pressure

Description : The state of a thermodynamic system is always defined by its:  a. Absolute temperature  b. process  c. properties  d. temperature and pressure

Last Answer : properties

What states that the net mass transfer to or from a system during a process is equal to the net change in the total mass of the system during that process?  A. Third law of thermodynamics  B. Conservation of energy principle  C. Second law of thermodynamic  D. Conservation of mass principle

Description : What states that the net mass transfer to or from a system during a process is equal to the net change in the total mass of the system during that process?  A. Third law of thermodynamics  B. Conservation of energy principle  C. Second law of thermodynamic  D. Conservation of mass principle

Last Answer : Conservation of mass principle

The area under the temperatureentropy curve (T – s curve) of any thermodynamic process represents  A. heat absorbed  B. heat rejected  C. either (a) or (b)  D. none of these

Description : The area under the temperatureentropy curve (T – s curve) of any thermodynamic process represents  A. heat absorbed  B. heat rejected  C. either (a) or (b)  D. none of these

Last Answer :  C. either (a) or (b)

For a thermodynamic process to be reversible, the temperature difference between hot body and working substance should be  (a) zero  (b) minimum  (d) maximum  (d) infinity  (e) there is no such criterion.

Description : For a thermodynamic process to be reversible, the temperature difference between hot body and working substance should be  (a) zero  (b) minimum  (d) maximum  (d) infinity  (e) there is no such criterion.

Last Answer : Answer : a

PVγ = Constant (where, γ = Cp/Cv) is valid for a/an __________ process. (A) Isothermal (B) Isentropic (C) Isobaric (D) Adiabatic

Description : PVγ = Constant (where, γ = Cp/Cv) is valid for a/an __________ process. (A) Isothermal (B) Isentropic (C) Isobaric (D) Adiabatic

Last Answer : (D) Adiabatic

PVy = constant, holds good for an isentropic process, which is (A) Reversible and isothermal (B) Isothermal and irreversible (C) Reversible and adiabatic (D) Adiabatic and irreversible

Description : PVy = constant, holds good for an isentropic process, which is (A) Reversible and isothermal (B) Isothermal and irreversible (C) Reversible and adiabatic (D) Adiabatic and irreversible

Last Answer : C) Reversible and adiabatic

In the equation, PVn = constant, if the value of n = ± ∞, then it represents a reversible __________ process. (A) Adiabatic (B) Isometric (C) Isentropic (D) Isothermal

Description : In the equation, PVn = constant, if the value of n = ± ∞, then it represents a reversible __________ process. (A) Adiabatic (B) Isometric (C) Isentropic (D) Isothermal

Last Answer : (B) Isometric

An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section. (A) Adiabatic (B) Isothermal (C) Isentropic (D) Isochoric

Description : An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section. (A) Adiabatic (B) Isothermal (C) Isentropic (D) Isochoric

Last Answer : (B) Isothermal