A True
B False

A low
B very low
C high
D very high

A
B
C
D

# Q4: Stirling and Ericsson cycles are

A reversible cycles
B irreversible cycles
C semi-reversible cycles
D quasi-static cycles

A zero
B minimum
C maximum
D positive

A one-half
B one-third
C two-third
D three-fourth

A 0.287 J/kgK
B 2.87 J/kgK
C 28.7 J/kgK
D 287 J/kgK

A 3 to 6
B 5 to 8
C 15 to 20
D 20 to 30

A workdone
B entropy
C enthalpy
D none of these

# Q10: The amount of heat required to raise the temperature of the unit mass of gas through one degree at constant volume, is called

A specific heat at constant volume
B specific heat at constant pressure
C kilo Joule
D none of these

A Boyle's law
B Charles' law
C Gay-Lussac law
D Avogadro's law

A All
B 4/7
C 11/4
D 9/7

A True
B False

# Q14: Which of the following is correct?

A Absolute pressure = Gauge pressure + Atmospheric pressure
B Gauge pressure = Absolute pressure + Atmospheric pressure
C Atmospheric pressure = Absolute pressure + Gauge pressure
D Absolute pressure = Gauge pressure - Atmospheric pressure

A True
B False

A 1.817
B 2512
C 4.187
D none of these

A zero
B 1/5
C 4/5
D 1

A Correct
B Incorrect

# Q19: The entropy __________ in an irreversible cyclic process.

A remains constant
B decreases
C increases

A atomisation
B carbonisation

A
B
C
D

A Producer gas
B Coal gas
C Mond gas
D Coke oven gas

A greater than
B less than
C equal to

A 1.333 N/m2
B 13.33 N/m2
C 133.3 N/m2
D 1333 N/m2

# Q25: The efficiency of Diesel cycle increases with

A decrease in cut-off
B increase in cut-off
C constant cut-off
D none of these

# Q26: A series of operations, which takes place in a certain order and restore the initial conditions at the end, is known as

A reversible cycle
B irreversible cycle
C thermodynamic cycle
D none of these

A Carnot cycle
B Stirling cycle
C Otto cycle
D Diesel cycle

A Oxygen
B Sulphur
C Nitrogen
D Carbon

A Agree
B Disagree

# Q30: The processes occuring in open system which permit the transfer of mass to and from the system, are known as

A flow processes
B non-flow processes
C adiabatic processes
D none of these

A Yes
B No

# Q32: According to Avogadro's law, the density of any two gases is __________ their molecular masses, if the gases are at the same temperature and pressure.

A equal to
B directly proportional to
C inversely proportional to

A True
B False

A Correct
B Incorrect

# Q35: The efficiency of Diesel cycle approaches to Otto cycle efficiency when

A cut-off is increased
B cut-off is decreased
C cut-off is zero
D cut-off is constant

A True
B False

A less than
B equal to
C more than

A 12
B 14
C 16
D 32

# Q39: The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is

A equal to one
B less than one
C greater than one
D none of these

# Q40: An adiabatic process is one in which

A no heat enters or leaves the gas
B the temperature of the gas changes
C the change in internal energy is equal to the mechanical workdone
D all of the above

A -273°C
B 273°C
C 237°F
D -237°F

# Q42: Which of the following statement is incorrect?

A The liquid fuels consist of hydrocarbons.
B The liquid fuels have higher calorific value than solid fuels.
C The solid fuels have higher calorific value than liquid fuels.
D A good fuel should have low ignition point.

A Boyle's law
B Charles' law
C Gay-Lussac law
D all of these

A Correct
B Incorrect

# Q45: The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and recondensed, then the liquid with the next higher boiling point is then evaporated and recondensed, and so on until all the available liquid fuels are separately recovered in the sequence of their boiling points. Such a process is called

A cracking
B carbonisation
C fractional distillation
D full distillation

A True
B False

# Q47: Carbonisation of coal consists of

A drying and crushing the coal to a fine powder
B moulding the finely ground coal under pressure with or without a binding material
C heating the wood with a limited supply of air to temperature not less than 280°C
D none of the above

A 8/3
B 11/3
C 11/7
D 7/3

# Q49: 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

# Q50: Which of the following is the lightest and most volatile liquid fuel?

A Gasoline
B Kerosene
C Fuel oil

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