An ideal vapor compression refrigeration system operates with refrigerant R-12. Enthalpy of dry saturated vapor at evaporator exit is 344.93 kJ/kg, enthalpy of saturated liquid at condenser exit is 228.54 kJ/kg, and compressor exit enthalpy is 369.68 kJ/kg. Determine the coefficient of performance (COP) of the system.

Which Indian independence movement leader was primarily known for his philosophy and practice of non-violent civil disobedience?

Who gave the call for 'Do or Die' during the Quit India Movement in 1942?

Which of the following revolutionary pairs were imprisoned together in Cellular Jail and faced harsh conditions, contributing significantly to the Indian independence movement?