Power Plant Engineering

THEORETICAL QUESTIONS
1. Write short notes on the following:
(a) Power transformer
(b) Voltage regulation
(c) Transmission of electrical power.
2. Discuss the factors to be considered while deciding the suitability of a transformer.
3. What are the properties of materials used for conductor? Name the materials used for conductors.

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ELECTRICAL SYSTEM
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4. What is the function of a reactor? Describe the various arran-gements used for location of
reactors.
5. What is a circuit breaker? What are the different types of circuit breakers that are employed in
typical power stations?
6. Describe the various generator-cooling methods.
7. Give a list of various electrical protective equipment used in a power station.
8. Describe the various methods of controlling the voltage at the consumer terminal used in
power supply system.
9. Write short notes on the following:
(a) Over-head and underground power transmission system.
(b) System of electrical energy transmission
(c) Practical working voltage
(d) Disposition of conductors
(e) Characteristics of relays
(f ) Control room
(g) Types of insulators.

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Chapter 13
Chapter 13
Chapter 13
Chapter 13
Chapter 13
Pollution and its Contr
Pollution and its Contr
Pollution and its Contr
Pollution and its Contr
Pollution and its Control
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13.1 INTRODUCTION
The atmosphere consists of a mixture of gases that completely surround the earth. It extends to an
altitude of 800 to 1000 kms above the earth’s surface, but is deeper at the equator and shallow at the
poles. About 99.9% of the mass occurs below 50 km and 0.0997% between 50 and 100 km altitude.
Major polluting gases/particles are confined to the lowermost layer of atmosphere known as Tropo-
sphere. That extends between 8 and 16 kms above the earth surface.
The main sources of atmospheric pollution may be summarized as follows:
(a) The combustion of fuels to produce energy for heating and power generation both in the
domestic sector as well as in the industrial sector.
(b) The exhaust emissions from the transport vehicles that use petrol, or diesel oil etc.
(c) Waste gases, dust and heat from many industrial sites including chemical manufacturers,
electrical power generating stations etc.