What is the unit of calorific value?
kJ/kg
Calorific value is the heat energy released per unit mass of fuel on complete combustion — i.e. energy / mass. The SI unit of energy is the kilojoule (kJ) and mass is measured in kilograms (kg), giving kJ/kg.
kN/kg is force per mass, while kW/sec and kCal/sec involve time and represent rates of energy transfer (power), not energy per mass. Hence the answer is kJ/kg.
The brightness of a star depends on its
Thermocouple is a device which converts
To change a temperature on the Kelvin scale to the Celsius scale, you have to ________ the given temperature.
Ramu mixes 2 litres of water at 100°C and 18 litres of water at 32°C. What temperature will the water have after mixing?
Which one of the following is the correct relation between the Kelvin temperature (T) and the Celsius temperature (tc)?