You convert to a larger unit. Smaller to larger. Metre is 1000 times larger than a millimetre
The answer to that one is going to depend on two things:-- what unit you are converting from-- what unit you are converting to
to get a unit
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conversion factor
You convert to a larger unit. Smaller to larger. Metre is 1000 times larger than a millimetre
Decagram if going from larger unit to smaller unit, and decigram if from smaller to larger.
The answer to that one is going to depend on two things:-- what unit you are converting from-- what unit you are converting to
to get a unit
divide
you divide the smaller # into the bigger #----
-reduce efficiency of your unit,and increase pressure ratio of the compressor,-
Multiply
If the numerator is money then the smaller unit rate is better. If the denominator is the money, then the larger unit rate.
I'm not an air conditioning expert, but I would expect that the compressor will run a lot more than it needs to. A 2 ton coil will not cool as much air as a larger capacity 3 ton coil. Experts?
It makes sense to multiply when converting measurements to smaller units because it takes many smaller units to make up a larger unit. So in order to translate larger unit(s) into smaller units, you have to break up the larger unit(s) into many smaller pieces.
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