A large capacity evaporator would probably have ____.
A. stainless steel tubing
B. an excess of liquid refrigerant
C. an excess of vapor refrigerant
D. multiple refrigerant circuits
Answer: D
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Which of the following is an NEC Article 427 requirement for the installation of electrical heat-tracing cables on pipe and vessels in unclassified areas?
a. The external surfaces of any equipment that operates at temperatures above 100°F (38°C) must be physically guarded, isolated, or thermally protected. b. Branch circuits and overcurrent devices supplying the equipment must be sized at no less than 100 percent of the total heater load. c. The heating cable cannot be allowed to make direct contact with the pipe or vessel. d. The presence of electric heating equipment must be identified using permanent caution signs or markings at the specified intervals.
Match each New Deal critic below with the cause or slogan that he promoted. A. Father Coughlin 1. "social justice" B. Huey Long 2. "every man a king" C. Francis Townsend 3. "a holy crusade for liberty" D. Herbert Hoover 4. "$200 a month for everyone over 60"
A. A-l, B-2, C-4, D-3 B. A-2, B-1, C-3, D-4 C. A-3, B-4, C-2, D-1 D. A-4, B-3, C-1, D-2 E. A-1, B-4, C-3, D-2
A two-stage refrigeration system uses two refrigeration systems to produce low temperatures.
Answer the following statement true (T) or false (F)
The _______ chisel is the best chisel to use to cut v-grooves
A. cape B. round nose C. diamond-point D. drift punch