00:01
For this problem, we are told that an ideal air standard auto cycle has a compression radio that is given.
00:08
We are going to call this compressio ratio as art, and that is equal to 8 .5.
00:20
And if the ratio of the specific heats is given, and that ratio we're going to call it gatma, is equal to 1 .4.
00:29
So the question in here is then what is the thermal efficiency in percentage of the auto cycle? now, the thermal efficiency is defined as 1 minus 1 divided by the rate given elevated to the specific heats, the ratio of the specific heats, and this minus 1.
00:52
So what we need to do is to simply substitute those values in here.
00:56
So we will have one minus one divided by the rate that is 8 .5 to the 1 .4 and this minus 1.
01:10
So, sorry, the minus 1 is in the exponent.
01:18
So please change that in there...