Delhi Police Constable Exam Model Paper 4

A British thermal unit (BTU) is a measure of the heat content of fuels or energy sources.

• It is the quantity of heat required to raise the temperature of one pound of liquid water by 1 degree Fahrenheit.

kWh is used for electric power measurement.

Joule is used for energy measurement.

• The SI unit for temperature is the Kelvin.
• Celsius is a derived unit for temperature.
• The SI unit of energy/work is the joule.
• The SI unit of power is the watt (W).
• The SI unit for pressure is the pascal (Pa).