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RRB Group-D Model Paper 11 with answers for online practice
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© examsnet.com
Question : 14
Total: 100
Which of the following is not a unit of Energy?
Calorie
B.T.U
Kilowatt-hour(kWh)
Phon
Validate
Solution:
Phon is not a unit of Energy.
Phon is a unit of the perceived loudness of sound for pure tones.
Units of heat:
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.
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