POWER ENGINEERING 3B2 - CHAPTER
7 EXAM QUESTIONS AND ANSWERS.
VERIFIED 2026.
Co-generation can be defined as:
a. Having two steam generation units in one plant.
b. The utilization of steam for process and power generation purposes.
c. The utilization of waste heat of a steam boiler to heat feedwater.
d. The utilization of one form of input energy to generate two or more forms of output energy.
e. The utilization of two forms of input energy to generate one single form of output energy. -
ANS D
The primary purpose of cogeneration is_____________________.
a. to reduce the equipment cost
b. to increase the life span of equipment
c. to reduce the prices of natural gas
d. to reduce staffing cost
e. to reduce the energy cost - ANS E
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,The advantages as compared to conventional facilities of cogeneration at micro (local) level
include:
1) Reduction in the total energy bill when electricity is required at the site
2) It is generally more compact and less maintenance required as compared to the conventional
facilities
3) Reduction of load demand on heavier polluting, coal-fired facilities
4) Shorter start up time
a. 1, 2, 3
b. 1, 2, 4
c. 1, 3, 4
d. 2, 3, 4
e. 1, 2, 3, 4 - ANS B
The applications of cogeneration can befall into which of the following areas:
1) Institutional establishments
2) Large scale industries plants
3) Localized central and heating and cooling plant
4) Theatres and restaurants
a. 1, 2, 3
b. 1, 2, 4
c. 1, 3, 4
d. 3, 4
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, e. 1, 2, 3, 4 - ANS A
Which of the following are the types of simple-cycle cogeneration used today:
1) Back Pressure Steam Turbine
2) Waste Heat Cogeneration
3) Heat Engine Cogeneration
4) Gas Turbine
5) Condensing steam turbine
a. 1, 2, 3, 5
b. 1, 2, 4, 5
c. 1, 3, 5
d. 2, 3, 4
e. 1, 2, 3, 4 - ANS E
Which one of the following simple-cycle cogeneration systems best describes this process?
"Steam produced from a boiler drives a steam turbine, which in turn drives the electric
generator. The low pressure exhaust steam from the turbine is supplying the required heat to
the process. The condensed steam from the process is then returned to the boiler."
a. Back Pressure Steam Turbine
b. Condensing Steam Turbine
c. Waste Heat Cogeneration
d. Heat Engine Cogeneration
e. Gas Turbine - ANS A
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
7 EXAM QUESTIONS AND ANSWERS.
VERIFIED 2026.
Co-generation can be defined as:
a. Having two steam generation units in one plant.
b. The utilization of steam for process and power generation purposes.
c. The utilization of waste heat of a steam boiler to heat feedwater.
d. The utilization of one form of input energy to generate two or more forms of output energy.
e. The utilization of two forms of input energy to generate one single form of output energy. -
ANS D
The primary purpose of cogeneration is_____________________.
a. to reduce the equipment cost
b. to increase the life span of equipment
c. to reduce the prices of natural gas
d. to reduce staffing cost
e. to reduce the energy cost - ANS E
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,The advantages as compared to conventional facilities of cogeneration at micro (local) level
include:
1) Reduction in the total energy bill when electricity is required at the site
2) It is generally more compact and less maintenance required as compared to the conventional
facilities
3) Reduction of load demand on heavier polluting, coal-fired facilities
4) Shorter start up time
a. 1, 2, 3
b. 1, 2, 4
c. 1, 3, 4
d. 2, 3, 4
e. 1, 2, 3, 4 - ANS B
The applications of cogeneration can befall into which of the following areas:
1) Institutional establishments
2) Large scale industries plants
3) Localized central and heating and cooling plant
4) Theatres and restaurants
a. 1, 2, 3
b. 1, 2, 4
c. 1, 3, 4
d. 3, 4
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, e. 1, 2, 3, 4 - ANS A
Which of the following are the types of simple-cycle cogeneration used today:
1) Back Pressure Steam Turbine
2) Waste Heat Cogeneration
3) Heat Engine Cogeneration
4) Gas Turbine
5) Condensing steam turbine
a. 1, 2, 3, 5
b. 1, 2, 4, 5
c. 1, 3, 5
d. 2, 3, 4
e. 1, 2, 3, 4 - ANS E
Which one of the following simple-cycle cogeneration systems best describes this process?
"Steam produced from a boiler drives a steam turbine, which in turn drives the electric
generator. The low pressure exhaust steam from the turbine is supplying the required heat to
the process. The condensed steam from the process is then returned to the boiler."
a. Back Pressure Steam Turbine
b. Condensing Steam Turbine
c. Waste Heat Cogeneration
d. Heat Engine Cogeneration
e. Gas Turbine - ANS A
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
