Question47:-The various processes involved in a particular thermodynamic cycle are reversible adiabatic compression, constant volume heat addition, constant pressure heat addition,
reversible adiabatic expansion and constant volume heat rejection. Identify the cycle,

AcBrayton cycle
B:-Otto cycle
C-Diesel cycle
D-Dual cycle
Correct Answer:- Option-D
Question48:-The difference in higher calorific value and lower calorific value of fuel is due to
‘A: Latent heat of vaporization of water
B:-Latent heat of vaporization of fuel
C-Sensible heat of fuel
D-Sensible heat of water
Correct Answer:- Option-é
Question49:-In which of the following air compression process the work done on the air is maximum ?
‘Ac Reversible adiabatic process
B:-lrreversible adiabatic process
C-4sothermal process
D-None of the above
Correct Answer:- Option ®
QuestionS0:-The emissive power of a grey body at a given temperature is always
‘AcLess than that of a black body
B:-Equal to that of a black body
CGreater than that of a black body
Ds Equal to one
Correct Answer:- Option-é
QuestionS1:-Relative humidity is defined as

AcThe ratio of mass of water vapour in air in a given volume at a given temperature to the mass of water vapour contained in the same volume at same temperature when air is
saturated

B:-The ratio of actual partial pressure of water vapour in moist air to the saturation pressure of water at the same dry bulb temperature
CeMass of water vapour contained in air vapour mixture per kg of dry air
D-Both Land 2 above
Correct Answer:- Option-D
Question52::Which of the following refrigerants is not அப்பட்ட பபப
ക
മ
=
०१145
Correct Answer:- Option-C

‘Question53:-In a vapour compression refrigeration system, the enthalpy change of refrigerant between suction and discharge of compressor is 40 kJ/kg and the heat rejected to
compressor cooling water jacket is 10 k J/kg and the refrigeration effect is 200 k kg. The C.0.P. of the refrigeration system is

ميم
8:5
667
0:02
‎Correct Answer:- Option-é‏
‎QuestionS4:-Effective temperature in air conditioning system depends on which of the following parameters ?‏
‎‘Ac Dry bulb temperature and wet bulb temperature‏
‎B:-Relative humidity and air motion‏
‎८-00 bulb temperature and air motion‏
‎D-Dry bulb temperature, relative humidity and air motion‏

Correct Answer: Option-D