Title: Unit 3 Quiz
Course: SGRD 105 Microgrids and Renewable Energies > Section: SGRD 105 Microgrids and Renewable Energies

Q: Cogeneration of electricity and usable heat is known as
- distributed generation
- combined heat and power
- combined cycle power
- reversible heat engine
A: combined heat and power

Q: The overall efficiency of a system that utilizes waste heat from electricity production compared to a system that does not
- is lower
- is the same
- is higher
- equals 100 %
A: equals 100 %

Q: Heat rate is
- fuel energy used per kWh electrical power output
- thermal energy produced per second
- electrical energy produced per second
- solar heating per unit area
A: fuel energy used per kWh electrical power output

Q: Typical microturbine efficiencies are
- 5 - 15 %
- 75 - 85 %
- 25 - 35 %
- 90 - 100 %
A: 25 - 35 %

Q: A microturbine operates on which thermodynamic cycle
- Brayton cycle
- Rankine cycle
- Carnot cycle
- Otto cycle
A: Brayton cycle

Q: Use of waste heat from electricity production for heating and cooling is called
- cogeneration
- trigeneration
- combined cycle power
- gasification
A: trigeneration

Q: A microturbine has a heat rate of 11,000 BTU/kWh. Calculate the thermal efficiency.
- 3.2 %
- 11 %
- 31 %
- 110 %
A: 31 %

Q: In a gas combustion turbine, incoming compressed air is preheated in the
- combustion chamber
- recuperator
- compressor
- generator
A: recuperator

Q: During which part of the refrigeration cycle does an absorption chiller utilize heat
- compression
- condensation
- expansion
- evaporation
A: compression

Q: The coefficient of performance of single effect LiBr/H2O systems is typically around
- 1.8 – 2.0
- 1.4 – 1.6
- 1.0 – 1.2
- 0.6 – 0.8
A: 0.6 – 0.8