Answer
Cannot be greater.
Work Step by Step
The combined turbine-generator efficiency can not be greater than either the turbine or the generator efficiency because both efficiencies are less than 1.
Thermodynamics: An Engineering Approach 8th Edition
by Cengel, Yunus; Boles, Michael
Published by
McGraw-Hill Education
ISBN 10:
0-07339-817-9
ISBN 13:
978-0-07339-817-4
Chapter 2 - Energy, Energy Transfer, and General Energy Analysis - Problems - Page 101: 2-55C
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