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For the following questions answer them individually
In a boiler, feed water is supplied per hour is 205 kg while coal fired per hour is 23 kg. Net enthalpy rise per kg of water is 145 kJ for conversion to steam. If the calorific
value of coal is 2050 kJ/kg, boiler efficiency will be
Which of the following power plant is least polluting and causing least environmental concern?
A diesel power station has fuel consumption of 0.2 kg per kWh. If the calorific value of diesel is 11000 kcal per kg, overall efficiency of power station is
A reversible engine has ideal thermal efficiency of 30%. When it is used as refrigerating machine with all other conditions unchanged, the coefficient of performance will be
In Vapour compression system, the condition of refrigerant before passing through the condenser is
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