Practice Questions Unit 1
1. Define energy and list different forms of energy with suitable examples.
2. Classify different types of energy based on their source with suitable examples.
3. Illustrate energy flow diagram of any one energy service.
4. Explain energy scenario in India in detail.
5. Explain global energy scenario from India`s perspective.
6. Explanation of indicator based on graph or diagram given. For example:
Briefly explain what do you understand based on the figure given below.
7. Explain different factors in total CO2 emission from Kaya identity perspective.
8. Explain sustainable development goals with respect to its evolution over the years and list
the SDGs related to energy and environment.
9. List the values of energy management as a tool for organizations to meet their objectives.
10. List 4 principles which if adopted may increase effectiveness of energy management system.
11. Explain global policy instruments related to energy and environment.
12. Illustrate different components of capital investment through a cash flow diagram.
13. List the different measures used to evaluate worth of investment in a project.
14. A thermal power plant is rated at 500 MW gross capacity and has an annual PLF of 80%. If
the plant has 9% auxiliary consumption and 38% efficiency, calculate:
a) Annual gross generation in million units
b) Actual generation in KJ
c) Net generation in GJ
d) Amount of input energy supplied to plant
15. A thermal power plant has an actual annual generation of 3800 million units, has 8%
auxiliary consumption and 40% efficiency. If the input energy used is coal (NCV 4500
kcal/kg), calculate:
a) Net generation
b) Auxiliary consumption
c) Total input energy supplied to plant
d) Amount of coal used
16. A thermal power plant has an efficiency of 38% and the input energy used is coal (NCV 4500
kcal/kg). If the percentage of carbon in the coal is 50% by weight calculate the emission
factor of the plant.
17. Determine the equal annual withdrawals that can be made for 8 years from an initial deposit
of $9000 in an account that pays 12%/yr. The first withdrawal is to be made one year after
the initial deposit. Illustrate with a proper cash flow diagram.
18. For the diagram for uniform series cash flow, calculate the present worth factor at 8%/yr
interest.
19. Assume you wish to make the series of withdrawals illustrated in Figure above from an
account which pays 15%/yr. How much money would you have to deposit today such that
the account is depleted at the time of the last withdrawal?
20. Given the following two cash flows at 15%/yr which do you prefer?
Cash Flow 1: Receive $1,322.50 two years from today
Cash Flow 2: Receive $1,000.00 today
21. Explain the tax considerations on economic decisions.
22. Installing thermal windows on a small office building is estimated to cost $10000. The
windows are expected to last six years and have no salvage value at that time. The energy
savings from the windows are expected to be $2600 each year for the first three years and
$4000 for each of the remaining three years. If MARR is 14%/year and the present worth is
to be used, is this an attractive investment?
