Which type of piston is closely associated with older Detroit Diesel engines?
A. articulating
B. crosshead
C. M type
D. flat crown
Answer: B
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Indicate whether the statement is true or false
Answer the following statement(s) true (T) or false (F)
1. All phase windings within the transformer normally have the same relative polarity. 2. Terminal markings indicate all the relationships between primary and secondary. 3. Most three-phase, dry-type distribution transformers are connected as a primary wye connection. 4. If the pattern is a delta-delta pattern, the displacement must be 60°. 5. It is only necessary to connect the similarly marked high- and low-voltage terminals if the transformers have the same voltage ratio, the same percent impedance, and the same angular displacement.
How can ice storage help a chiller system operate more efficiently?
A) By charging the ice storage system during off-peak hours when electricity is less expensive B) By helping address peak load demand, allowing the use of a smaller chiller that operates closer to full load C) By lowering the chiller evaporator temperature, making it operate more efficiently D) By supercooling the chilled water with ice