The main difference between a DSX-1 and a DSX-3 is that a DSX-1 panel terminates coaxial cable connections and the DSX-3 panel terminates twisted copper pair connections
Indicate whether the statement is true or false
FALSE
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Explain why it may or may not be justified to keep a computer system on continuously.
What will be an ideal response?
To act as a moisture seal, an outer covering of liquidtight, sunlight-resistant flexible material is placed around _____
a. flexible nonmetallic conduit b. flexible metal conduit c. high-density polyethylene conduit d. rigid polyvinyl chloride conduit
A) Find the rate at which work is added in the compressor, in kJ/min. B) Find the coefficient of performance of the refrigeration cycle. C) Find the specific enthalpy of the refrigerant when it is a saturated liquid at 300 K. D) All of the work for the compressor is supplied by a Rankine heat engine that has an efficiency of 25%. Find the rate at which heat is removed from the condenser in this Rankine heat engine.
3. A steady state refrigerator operates on the vapor compression cycle. The refrigerant, in the vapor phase, behaves as an ideal gas with CP*=6R, and the specific enthalpy of the compound in saturated liquid and saturated vapor states at 270 K is given in the table below.
• The flow rate of the refrigerant is 100 mol/min.
• The vapor entering the compressor is saturated vapor at 270 K.
• The efficiency of the compressor is 75%.
• The liquid exiting the condenser is saturated liquid at 300 K.
• The mixture exiting the valve is 20% vapor and 80% liquid.
• There is no significant pressure change in either heat exchanger.
What is the maximum depth of cut for a bird's mouth?
A) One-third of the rafter depth B) One-fourth of the rafter depth C) Two-thirds of the rafter depth D) One-half of the rafter depth