This is the first of a two-volume work covering the electrical principles syllabuses of all of the major examining bodies including the City & Guilds of London Institute's electrical craft courses. It is also suitable for a wide range of other courses, including the first three years of the BTEC electrical series. Great care has been taken to ensure that the text fully covers the content of the syllabuses concerned, both as published and as interpreted by the examiners in the past.

Electrical steels are critical components of magnetic cores used in applications ranging from large rotating machines, including energy generating equipment, and transformers to small instrument transformers and harmonic filters. Presented over two volumes, this comprehensive handbook provides full coverage of the state-of-the-art in electrical steels.

Entrepreneurship and innovation are widely recognized as key drivers of long-term economic growth. Understanding the forces that influence them is essential for policy design. Building on the twenty-year legacy of the NBER Innovation Policy and the Economy series, Entrepreneurship and Innovation Policy and the Economy showcases recent research on entrepreneurship and entrepreneurship policy. The volume reports on five research projects. First, leveraging detailed data from the Business Formation Statistics, John Haltiwanger documents a striking uptick in new business formation during the pandemic, and considers the future economic impact of this renewed rate of business dynamism. The next two chapters focus on disparities in the degree of inclusion of women and people of color in innovation and entrepreneurship. Lisa Cook, Janet Gerson, and Jennifer Kuan examine the history of unequal access to education, training, and the practice and commercialization of invention, and the subsequent loss in innovative capacity and productivity. They also consider the potential effects of policies that address these inequalities. Mercedes Delgado and Fiona Murray complement this analysis by characterizing and analyzing the gender gap in patented innovation, including the substantial variation in inclusion of women across locations, industries, and individual firms. The remaining chapters focus on the organization of research and commercialization. Chiara Franzoni, Paula Stephan, and Reinhilde Veugelers consider the operation of current research funding systems with regard to risky research projects. They also describe the consequences of documented biases against novelty in funding decisions in the context of research on mRNA technology. Drawing on historical lessons from World War II as well as current analysis of innovation policy during COVID-19, Daniel Gross and Bhaven Sampat consider the unique challenges that arise when a crisis necessitates unusually rapid innovation and the deployment, at scale, of research findings.

This volume presents six new papers on environmental/energy economics and policy. Robert Stavins evaluates carbon taxes versus a cap-and-trade mechanism for reducing greenhouse-gas emissions, arguing that specific design features of either instrument can be more consequential than the choice of instrument itself. Lucas Davis and James Sallee show that the exemption of electric vehicles from the gasoline tax is likely to be efficient as long as gasoline prices remain below social marginal costs, even though it results in lower tax revenue. Caroline Flammer analyzes the rapidly growing market for green bonds and highlights the importance of third-party certification to  the financial and environmental performance of publically traded companies. Antonio Bento, Mark Jacobsen, Christopher Knittel, and Arthur van Benthem develop a general framework for evaluating the costs and benefits of fuel economy standards and use it to account for the differences between several recent studies of changes in these standards.  Nicholas Muller estimates a measure of output in the U.S. economy over the last 60 years that accounts for air pollution damages, and shows  that pollution effects are sizable, affect growth rates, and have diminished appreciably over time. Finally, Marc Hafstead and Roberton Williams illustrate methods of accounting for  employment effects  when evaluating the costs and benefits of environmental regulations.