A bowstring truss should use horizontally laminated layers of wood to create the arched top chord, rather
than vertically laminated lumber, because _____.
a. the top surface is smoother, creating a better surface for fastening roofing materials
b. vertically laminated wood cannot be bent to form the required arch
c. the arched chord gains strength from the individual arched layers of wood
d. vertically laminated wood cannot be cut into an arched shape
b
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In the past, wetlands were thought to have little value; list two general ways in which wetlands were destroyed
What will be an ideal response?
All of the following are examples of a state or local conservation effort EXCEPT ____
a. zoning laws b. CREES c. “green acre” laws d. limits on how far land can be subdivided e. Reinvest In Minnesota
An autotransformer ____.
A. has its primary and secondary windings electrically and mechanically separated from each other B. uses the same winding for both the primary and secondary windings C. produces a lower secondary voltage than the primary voltage D. produces a higher secondary voltage than the primary voltage
The coupling capacitor in CDA circuits is important because if its value is
A) too small the circuit gain will be increased. B) too large the circuit gain will be decreased. C) too large the circuit gain will be increased. D) too small the circuit gain will be decreased.