Describe the cryogenic freezing process
What will be an ideal response?
Cryogenic freezers utilize both convection and/or conduction by exposing food to temperatures below –76oF in the presence of liquid nitrogen or liquid carbon dioxide refrigerants.
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Answer the following statement(s) true (T) or false (F)
1. Transformers are of the dry type or oil filled. 2. A major disadvantage of the autotransformer over the insulating type is its lighter weight and compact size. 3. When there are several different secondary windings supplying the secondary conductors, an overload could occur on one or more secondary conductors and go undetected by the primary overcurrent protection. 4. The overcurrent protection rules for a transformer do not provide for the protection of the conductors supplying a transformer or the conductors leading away from the transformer. 5. Most insulating transformer installations are not separately derived systems.
____________________ is a form of sprigging
Fill in the blank(s) with correct word
A major drawback in using ECL logic circuits in conjunction with TTL and MOS circuits is its negative supply voltages and logic levels
Indicate whether the statement is true or false
If the roof framing has common rafters spaced at 24" o.c., what is the spacing of hip jack and valley jack rafters?
A) 32" B) 12" C) 16" D) 24"