Sheet piles are used
A) as deep foundations in buildings.
B) as formwork for concrete walls.
C) as excavation supports.
D) as shallow foundations in buildings.
E) none of the above.
C) as excavation supports.
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Answer the following statement(s) true (T) or false (F)
1. Most motors are successfully started at 90 percent of line voltage. 2. The starting transformers are inductive loads. 3. In an autotransformer-type starter the timing for the time-delay relay that controls the transfer from the reduced voltage condition to full voltage is not adjustable. 4. De-energizing the transformers while in the running position is done to conserve electrical energy. 5. Magnetic overload relays are used on large reduced voltage starters.
All heating, cooling, and refrigeration equipment should have some means for disconnecting the power supply at the equipment.
Answer the following statement true (T) or false (F)
The best season for transplanting depends on the kind of material being planted
Indicate whether the statement is true or false
Which of the following statements is false?
A. The enthalpy of the system does not appear explicitly in the generalized energy balance equation. B. If a system is stationary, all of the kinetic energy terms in the generalized energy balance equation can definitely be set to zero. C. If a system is stationary, the accumulation term of the energy balance equation can be simplified to dU/dt. D. The quantity Q ? can be expressed in units of watts. E. Flow work can be present even if the system is not expanding or contracting.