Articles of cargo that are likely to roll must be restrained by:
A. chocks
B. wedges
C. a cradle
D. any of the above
Answer: D
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Los electrodos de placa, pica y tuberÃa deben tener una resistencia a tierra igual o inferior a _____ ohmios.
a. 10 b. 25 c. 40 d. 60
What are the two main disadvantages of layering?
What will be an ideal response?
Applying physical laws and fundamental concepts that govern the behavior of engineering systems is a part of which step in a basic engineering problem solution?
a. Defining the problem b. Simplifying the problem c. Performing the solution or analysis d. Verifying the results
Answer the following statement(s) true (T) or false (F)
1. A 460/115/230 transformer may be connected for two ratios: 460/115 or 230/115. 2. For subtractive polarity, the voltmeter reading (V) is less than the applied voltage. 3. If a 460/115/230-volt, single-phase transformer is to be connected to obtain 460/230 volts, the two secondary coils must be connected in parallel. 4. Taps are arranged in increments of 2.5% or 5% of the primary nominal voltage rating of the transformer. 5. Regulation of constant potential transformers is about 10-25% at the secondary terminals.