Conventional line-voltage thermostats do not provide precise temperature control because _____.
a. the sensor must be routed through a delay switch
b. the bimetal elements are heavier and do not respond as quickly
c. they have staggered startup
d. occupants often use the override controls
b. the bimetal elements are heavier and do not respond as quickly
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The pumping cost for delivering water from the Ohio River to Wheeling Steel for cooling hot rolled steel was $1.8 million for the first 4 years. An effective energy conservation program resulted in a reduced cost of $1.77 million in year 5, $1.74 million in year 6, and amounts decreasing by $30,000 each year through year 10. What is the present worth of the pumping costs in year 0 at an interest rate of 12% per year?
What will be an ideal response?
The best way to adjust a CPR valve is by ____.
A. adjusting the low pressure control B. measuring the temperature drop of the air through the evaporator C. adjusting the CPR to produce an amperage draw of the compressor motor to the motor nameplate rating plus 10% D. adjusting the CPR to produce an amperage draw of the compressor motor to the motor nameplate rating plus 25%
What is the best means of addressing the viral diseases that affect livestock?
A. Pesticide B. Quarantine C. Prevention D. Medication
Consider NiMH hobbyist batteries depicted in Figure P2.39.
a. If V1 = 12.0V, R1 = 0.15?, and Ro = 2.55 ?, find the load current Io and the power dissipated by the load.
b. If battery 2 with V2 = 12 V and R2 = 0.28? is placed in parallel with battery 1, will the load current Io increase or decrease? Will the power dissipated by the load increase or decrease? By how much?
