Question

The schematic of which power plant is shown in diagram?
What is the fuel used in the plant ?
i) State any one probelm caused due to power generation using this power plant.
Draw the flow chart showing the generation of electricity in the power plant.
Draw the flow chart for the transformation of energy in the power plant.​

Answer 1

Answer:

Explanation:

for systems in general, these devices will be pretty much black boxes for us. We shall not

place undue emphasis on how they work; we shall concentrate on what they accomplish. In

other words, energy supply (output) and demand (input), at this microscale, will be our

focus. This is illustrated in Figure 4-1. Energy supply and demand at the macroscale

(United States and the world), which will be the focus of our discussion in Parts II and III

of the book, are very much dependent on the balance between energy input and output in

the devices that we use in our homes and at work.

Energy

Conversion

Device

Energy Input Energy Output

Energy Output = Energy Input (1st Law)

Useful Energy Output Energy Input (2nd Law)

FIGURE 4-1. Schematic representation of an energy conversion device.

The efficiency of an energy conversion device is a quantitative expression of this balance

between energy input and energy output. It is defined as follows:

Device efficiency = Useful energy output

Energy input

The key word in the above definition is ‘useful’. Were it not for this word, of course, the

definition would be trivial, as shown in Figures 3-3 and 4-1. The First Law of

Thermodynamics tells us that energy is conserved in all its transformations. So the ratio of

energy output to energy input is always unity, or 100%.

The meaning of the word ‘useful’ depends on the purpose of the device. For example,

if the device is an electric heater, the useful energy output is heat, and the energy input is

electricity. Electricity is converted to heat. Heat is also obtained from electricity in a light

bulb, as we well know. But this is not the useful energy obtained from a light bulb; the

purpose of a light bulb is to convert electricity into light. Table 4-1 summarizes the useful

energy output and energy input for some common energy conversion devices. Figures 4-2

and 4-3 are illustrations of how to use the information provided in Table 4-1 for the case of

two ubiquitous devices, an electric motor and a furnace