What's the difference between a fraction and a ratio? A fraction is a number that names part of a whole or part of a group. The denominator represents the total number of equal parts the whole is divided into. A ratio is a comparison of two quantities.
Answer:
The objective of a protection scheme is to keep the power system stable by isolating only the components that are under fault, whilst leaving as much of the network as possible still in operation.
Explanation:
The devices that are used to protect the power systems from faults are called protection devices.
Answer:
Explanation:
The theoretical Coefficient of Performance of a refrigerator is:
The real Coefficient of Performance is:
The power required to freeze the vegetables is: