Which of the following is a solid-state device thatroutes power from the DC bus to the second circuit of the dynamic retarding grid during shutdown or certain fault modes?
A. rectifier
B. phase modules
C. inverter cabinet
D. crowbar assembly
Answer: D
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Innovations in the election of 1832 included
A. direct election of the president. B. adoption of written party platforms. C. a series of presidential debates between the candidates. D. presidential nominations of "favorite sons" by state legislatures. E. abandonment of party conventions.
A common design practice is to allow a circuit breaker to carry only ____ percent of its continuous current rating.
A. 60 B. 70 C. 80 D. 90
When is the best time of year to fertilize grasses that grow in the cool part of the year?
A) early spring B) mid-summer C) late fall D) early winter
Despite their political and strategic differences, the United States and the Soviet Union strongly resembled one another in 1945 in that they
A. had long experience as great powers in Europe. B. accepted the idea of balance of power and spheres of influence. C. believed that control of the Middle East was essential to maintaining their national security. D. had been historically very involved in world affairs and engaged in protecting peace and collective security in the world. E. had a long history of conducting an idealistic, "missionary" diplomacy in world affairs.