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Q1. | Which of the following items is not a path function |

A. | heat [Wrong Answer] |

B. | work [Wrong Answer] |

C. | kinetic energy [Wrong Answer] |

D. | vdp [Wrong Answer] |

E. | thermal conductivity. [Correct Answer] |

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Explanation:-
Answer : EDiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ Molecular volume of any perfect gas at 600 x 103 N/m2 and 27°C will be

4.17m3/kgmol

400 m3/kg mol

0.15 m3/kg mol

41.7 m3/kg mol

⇒ The ideal efficiency of a Brayton cycle without regeneration with increase ni pressure ratio will

increase

decrease

remain unchanged

increase/decrease depending on application

⇒ In a steady flow process, the ratio of.

heat transfer is constant

work transfer is constant

mass flow at inlet and outlet is same

all of these

⇒ If a certain amount of dry ice is mixed with same amount of water at 80°C, the final temperature of mixture will be

80°C

0°C

40°C

20°C

⇒ The natural petroleum may be separated into.

petrol

kerosene

fuel oil

lubricating oil

⇒ According to Avogadro's law.

the product of the gas constant and the molecular mass of an ideal gas is constant

the sum of partial pressure of the mixture of two gases is sum of the two

equal volumes of all gases, at the same temperature and pressure, contain equal number of molecules

all of the above

⇒ Work done in a free expansion process is

+ ve

-ve

zero

maximum

⇒ On volume basis, air contains following parts of oxygen

21

23

25

77

⇒ The throttling process is __________ process.

reversible

irreversible

reversible or irreversible

none of these.

⇒ Diesel cycle consists of __________ processes.

two constant volume and two isentropic

two constant pressure and two isentropic

two constant volume and two isothermal

one constant pressure, one constant volume and two isentropic

⇒ One watt is equal to

1 Nm/s

1 N/mt

1 Nm/hr

1 kNm/hr

⇒ Which of the following statement is wrong?

The closed cycle gas turbine plants are external combustion plants.

In the closed cycle gas turbine, the pressure range depends upon the atmospheric pressure.

The advantage of efficient internal combustion is eliminated as the closed cycle has an external surface.

In open cycle gas turbine, atmosphere acts as a sink and no coolant is required.

⇒ The natural solid fuel is.

wood

coke

anthracite coal

pulverised coal

⇒ Minimum work in compressor is possible when the value of adiabatic index n is equal to

0.75

1

1.27

1.35

⇒ The __________ states that change of internal energy of a perfect gas is directly proportional to the change of temperature.

Boyle's law

Charle's law

Gay-Lussac law

Joule's law

⇒ For same compression ratio and for same heat added

Otto cycle is more efficient than Diesel cycle

Diesel cycle is more efficient than Otto cycle

efficiency depends on other factors

both Otto and Diesel cycles are equal¬ly efficient

⇒ The specific heat at constant volume is.

the amount of heat required to raise the temperature of unit mass of gas through one degree, at constant pressure

the amount of heat required to raise the temperature of unit mass of gas through one degree, at constant volume

the amount of heat required to raise the temperature of 1 kg of water through one degree

any one of the above

⇒ The efficiency of Carnot cycle is maximum for

gas engine

well lubricated engine

petrol engine

steam engine

⇒ Superheated vapour behaves

exactly as gas

as steam

as ordinary vapour

approximately as a gas

⇒ In an extensive property of a thermodynamic system.

extensive heat is transferred

extensive work is done

extensive energy is utilised

none of these

⇒ A perpetual motion machine is

a thermodynamic machine

a non-thermodynamic machine

a hypothetical machine

a hypothetical machine whose operation would violate the laws of thermodynamics

⇒ The gas constant (

*R*) is equal to the.

sum of two specific heats

difference of two specific heats

product of two specific heats

ratio of two specific heats

⇒ The value of one bar (in S. I. units) is equal to.

1 x 102 N/m2

1 x 103 N/m2

1 x 104 N/m2

1 x 105 N/m2

⇒ The area under the temperature-entropy curve (

*T*-

*s*curve) of any thermodynamic process represents.

heat absorbed

heat rejected

either (a) or (b)

none of these

⇒ Carnot cycle has maximum efficiency for.

petrol engine

diesel engine

reversible engine

irreversible engine

⇒ If the value of

*n*= 0 in the equation

*pv*=

^{n}*C*, then the process is called.

constant volume process

adiabatic process

constant pressure process

isothermal process

⇒ The value of n = 1 in the poly tropic process indicates it to be

reversible process

isothermal process

adiabatic process

irreversible process

⇒ According to Kelvin-Planck's statement of second law of thermodynamics,

it is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work

it is possible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work

it is impossible to construct a device which operates in a cyclic process and produces no effect other than the transfer of heat from a cold body to a hot body

none of the above

⇒ Universal gas constant is defined as equal to product of the molecular weight of the gas and

specific heat at constant pressure

specific heat at constant volume

ratio of two specific heats

gas constant

⇒ The change of entropy, when heat is absorbed by the gas, is.

positive

negative

positive or negative

none of these.