A(n) ____________________ motor is wound like an AC induction motor, but it uses permanent magnets on the rotor and does not contain a commutator.
Fill in the blank(s) with the appropriate word(s).
brushless DC
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Inverters are also known as ____.
a. thyristors b. diodes c. oscillators d. rectifiers
The event that threatened to destroy the longstanding balance of free and slave states in the United States Senate was the
A. passage of the Kansas-Nebraska Act. B. potential admission of Oregon as a free state. C. attempt to acquire Cuba as a slave state. D. proposed building of a southern transcontinental railroad. E. discovery of gold in California and its bid for statehood.
Which of the following is not one of the best practices for a team entering the prototyping phase?
A. Try to create a virtual prototype, which are dynamic and cost less B. Have a minimum awesome product before starting to prototype C. Carry multiple product concepts into the prototyping phase D. Use rapid prototyping to aim for a minimum viable product
What is the total resistance of three resistors--3 kW, 4 kW, and 12 kW--connected in parallel?
A. 1.5 kW B. 2 kW C. 5 kW D. 6.3 kW