____________________ specifications often result in lower construction costs because the bidder has more freedom to select materials and methods
Fill in the blank(s) with correct word
Performance
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The ____ switch is the most commonly used switch in residential wiring.
a. four-way b. three-way c. double-pole d. single-pole
The ____________________ is a device that creates a magnetic field when energized and causes some action to an electric component such as a relay or valve.
Fill in the blank(s) with the appropriate word(s).
The subsequent problems deal with the figure and table below
For a Type J (Iron-Constantan) thermocouple configuration (as shown above) with a 0°C reference (Tref):
where Vemf is the voltage difference produced by the junction pair (Vemf = VA ? VB in the figure).Assume that nodes A and B are at the same temperature, unless indicated otherwise. Assume that the op amp is ideal.If we measure a 20°C input with a 10°C reference, the voltage between nodes A and B would be?
A. 1.526 mV B. 0.507 mV C. 0 mV D. 1.019 mV E. 0.512 mV
A typical ac synchronous motor has
A. no brushes B. a slip ring and brushes C. a rotating stator housing D. a permanent magnet rotor E. a commutator and brushes