A(n) ____ is an electromechanical switch that opens and closes with an electromagnetic coil.
A. solenoid
B. relay
C. AC generator
D. DC generator
Answer: B
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When did diesels become commonplace in farm machinery?
What will be an ideal response?
____ construction includes structures other than buildings, such as refineries and paper mills.
A. Residential B. Public C. Commercial D. Industrial
Oxygen gas expands in a flexible container following a relationship of PV1.15 = constant. The mass of the oxygen is 1.75 lbm, and initially the pressure and temperature of the oxygen is 150 psi and 150oF, respectively. The expansion continues until the volume is double the original volume. Determine the final pressure and temperature of the oxygen, and the work done by the oxygen during the expansion.
Given: m = 1.75 lbm; T1 = 150oF = 610 R; P1 = 150 psi = 21,600 lbf/ft2; V2 = 2V1; PV1.15 = constant. What will be an ideal response?
The process that causes beneficial consequences on yield for unknown reasons is called ______________________________
Fill in the blank(s) with correct word