Question

Subject Test
Find the second law efficiency of the steam turbine operating steadily at initial pressure
of 3 MPa and initial temperature of 450°C. The final conditions of steam at 0.2 MPa and
200°C. Neglect the kinetic and potential energy changes. The heat loss from the steam
turbine to the surroundings is 250 kW. Assume the mass flow rate of steam is 7 kg/s
a)78%
b)50%
c)58%
d)98%​

Answer 1

Answer:

78%

Explanation:

Perimeter and area are two important and fundamental mathematical topics. They help you to quantify physical space and also provide a foundation for more advanced mathematics found in algebra, trigonometry, and calculus. Perimeter is a measurement of the distance around a shape and area gives us an idea of how much surface the shape covers.

Knowledge of area and perimeter is applied practically by people on a daily basis, such as architects, engineers, and graphic designers, and is math that is very much needed by people in general. Understanding how much space you have and learning how to fit shapes together exactly will help you when you paint a room, buy a home, remodel a kitchen, or build a deck.