Chapter 8 Quiz

Which environmental impact is a result of fossil fuel use? O a. all of these O b. chemical pollution O c. global warming O d. thermal pollution

i. With a neat sketch explain how fossil fuels can be used for electrical energy? ii. What is the composition of Biogas? List various applications of Biogas.

(b) Differentiate supply and demand laws. Support with equations(c) Explain briefly the electricity market price equilibrium of supply and demand

Discussion Questions 1- Draw the important components of a steam power station. 2- What factors are taken into account to select the site of steam power station. 3- State the main parts of a thermal power station, and discuss the function of each part. 4- Draw the important components of a Hydro-Electric power station. 5- What factors are taken into account to select the site of Hydro-Electric power station. 6- Draw the important components of a nuclear power station. 7- What factors are taken into account to select the site of nuclear power station. 8- What do you understand from the load curve and what information are converged by a load curve. 9- Discuss the important points to be taken into consideration while selecting the size and number of units generation. 10- Explain the terms, connected load, load factor, plant use factor, diversity factor.

What do you call the energy sources that were used for many decades in generating Electrical Energy? O A. RENEWABLE ENERGY SOURCES O B. PRIMARY ENERGY SOURCES O C. CONVENTIONAL ENERGY SOURCES O D. FUNDAMENTAL ENERGY SOURCES

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5. The amount of energy that can be stored in a single system per unit volume is a. Energy volume b. Charge & discharge efficiency c. Energy Density d. Energy to power ratio 6. A storage system suits discharging large power quantity for long period is a. Supercapacitor b. Flywheel c. Batteries d. Compressed Air 7. The best indication about state of charge of Lead Acid Battery a. output voltage b. temperature of electrolyte c. specific gravity of electrolyte d. none of the above 8. In Ideal case, the Charging current for 200Ah battery would be a. 10A b. 12A C. 15A d. 20A ?

Which of these sources of energy is very damaging and dirty when extracted, burned, and disposed of?    a. coal b. nuclear c. natural gas

Comes from the process of decay of radioactive elements within the earth’s crust. a. Geothermal Energy b. Solar Energy c. Wind Energy d. Biomass Energy e. None of these

i) Discuss five advantages of conventional energy sources?  ii. Discuss five disadvantages of conventional energy source? iii. Distinguish the 10 trend or factors that affect the future power growth of a country. iv. Propose five forms of energy we have  and explain how such energy is used to produce electricity.

Select the correct answer for each of the following statements Book Source: Electricity 3 | 10th Edition ISBN-13:9781111646738ISBN:1111646732Authors:Jeffrey J. Keliik UNIT 1: Operating Principles of DC Generators 1. A generator a. changes electrical energy to mechanical energy. b. changes mechanical energy to electrical energy. c. is always self-excited. d. is always separately excited. 2. One of the following is not essential in generating a DC voltage: a. a magnetic field b. a conductor c. slip rings d. relative motion 3. Commutating poles are a. fastened to the center of the commutator. b. located midway between the main poles. c. secondary poles induced by cross-magnetizing the armature. d. used to regulate the voltage at the armature. 4. The winding on an interpole is a. made of many turns of fine wire. b. wound in a direction opposite to that of the armature winding. c. connected in series with the armature load. d. connected across the generator terminals. (Ctrl)

Which one is a non-conventional energy: a. Fossil fuel. b. Municipal solid waste. C. Heating oil. d. Uranium.

What is Coal? Why it is considered as non-renewable energy source?

Consider the circuit shown in Figure P1.68. a. Which elements are in series?b. Which elements are in parallel? c. Apply Ohm’s and Kirchhoff’s laws to solve for R x.

Define conventional energy resources. Name any one of them and mention its disadvantage. A- B

Select in descending order based on percentage the primary energy use of the world O a. petroleum, gas, coal and other O b. gas, petroleum, coal and other O c. coal, petroleum, gas and other O d. coal, petroleum, gas and other

Explain in your own words, the important negative environmental impacts of the following energy sources: A. nuclear energy B. wind energy

3.Question (a) Look up the definition of unit for clothing insulation, called “clo” value. Convert 1.5 clo to a value with an unit in international standard. (b) In the winter, people wear more cloth to keep themselves warm. You have the option of wearing 2 jackets that are 0.3 cm thick or 1 jacket that is 0.6 cm. Assume they are made of the same material and neglect any effect from cloth openings. Which option should you choose to keep you warm? Draw a thermal circuit to help with your discussion.

(b).Explain with reasons why hydro power generation is sometimes disadvantageous.

What bio-energy fuel can be derived from vegetable oil? O a. methane O b. charcoal O C. syngas O d. bio-diesel

Which of the following is a viable clean and renewable alternative to the use of nuclear power to generate electricity? A Natural gas Hydroelectric dams Oil sands Hydraulic fracturing or "fracking"

Electrical Engineering subject

Refer to this Figure 1. Determine the minimum value of IBthat will produce saturation.

3. Explain the environmental impacts of Geothermal power plant

The levelised cost of electricity (LCOE) is often used to compare the costs of electricity production from different types of electricity generation plant. Carefully describe the significance of the LCOE and give one advantage and one disadvantage of using this metric to compare plants.

1.The real efficiency of the best commercial wind turbine is ......... than that of a solar cell. a. more b. equal c. less d. equal or less 2.How can asolar tower power plant supply electricity at night? a. it uses a battery as energy storage b. it pumps water to higher place c. it stores hot oil in thermal storage tanks to produce steam d. it converts electricity into hydrogen fuel

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Discuss the challenges of Renewable Energy

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Q3. 1. Whal are the benelits of flue gases in thprmal station? 2. How can inerease the voltage crosses the solar cells? 3. List the main elements of the wind - electrie conversion system

a. Explain about Energy crisis.