‘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
ರಜ cycle
०-०८०। cycle
Correct Answer:- Option-D
Question48:-The difference in higher calorific value and lower calorific value of fuel is due to
‘As Latent heat of vaporization of water
न heat of vaporization of fuel
Sensible heat of fuel
D-Sensible heat of water
Correct Answer:- ೦೧000
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
വന്നല്‍ 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
DEqual to one
Correct Answer:- ೦೧000
QuestionS1:-Relative humidity is defined as

കണ്ണട 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
ടേ 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
ARIZ
8-822
8744
8244
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

مھ
8:5
667
0-025
‎Correct Answer:- ೦೧000‏
‎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
‎C=Dry bulb temperature and air motion‏
‎D-Dry bulb temperature, relative humidity and air motion‏

Correct Answer: Option-D