_____ concrete blocks are made with projected vertical ribs on the face of the block for a rustic appearance.
A. Fluted
B. Projected
C. Piped
D. Ribbed
Answer: A
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Answer the following statement(s) true (T) or false (F)
1. The torque of a cumulative compound motor for a given current is less than it would be for a shunt motor. 2. The cumulative compound motor has a definite no-load speed and will not build up to destructive speeds if the load is removed. 3. The speed regulation of a cumulative compound-wound motor is inferior to that of a shunt motor and superior to that of a series motor. 4. It is conventional to reverse the current in the field circuits to reverse the rotation of a compound-wound motor. 5. Because the field decreases with a load increase, a differential compound motor has a tendency for load instability.
Ceiling diffuser performance relies on a phenomenon called the Coanda effect. What is it?
A) Cold air clings to the ceiling upon being discharged. B) Cold air diffuses to achieve even space temperatures. C) Cold air swirls to mix with room air. D) Cold air is directed downward to sources of heat gain.
Provisions that should be made in advance for reporting and responding to job-site emergencies include each of the following except _____.
a. civil disturbances b. material backorders c. wind or rain storms d. personnel injuries
What is the amperage of a 1,200-watt heater on a 120-volt circuit? Use the formula W = VA.
What will be an ideal response?