what would be maximum efficiency of engine that can be had between the temperature of 1150 CELCIUS degree and27 CELCIUS degree (use temperature in K)

https://en.wikipedia.org/wiki/Thermal_efficiency#Carnot_efficiency

To find the maximum efficiency of an engine operating between two temperatures, we can use the Carnot efficiency formula. The Carnot efficiency is given by:

η = 1 - (Tc/Th)

where:
η is the efficiency of the engine,
Tc is the absolute temperature of the cold reservoir, and
Th is the absolute temperature of the hot reservoir.

To convert temperatures from Celsius to Kelvin, we use the equation:

T(K) = T(°C) + 273.15

Let's apply these formulas to calculate the maximum efficiency of the engine between the given temperatures: 1150°C and 27°C.

First, we convert the temperatures to Kelvin:

Th = 1150°C + 273.15 = 1423.15 K
Tc = 27°C + 273.15 = 300.15 K

Now we can substitute the values into the Carnot efficiency formula:

η = 1 - (300.15 K / 1423.15 K)

Calculating this equation will give us the maximum efficiency of the engine operating between these temperatures.