Which of the following indices measures the effectiveness of the transparency of glass in relation to the solar heat gain through glass?
A) SHGC
B) SC
C) LSG
D) UVT
E) None of the above
C) LSG
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The nameplate on a motor indicates that the motor has an FLC of 15A and a service factor (SF) of 1.15. How much additional current can this motor safely handle for intermittent power demands?
a. 1.15A b. 1.75A c. 2.25A d. 3.25A
A jalapeno canning company is faced with a make/buy decision. Cardboard shipping cartons can be purchased for $0.60 each or made in-house. If manÂufactured, two machines will be required. Machine X will cost $20,000 and have a life of 6 years with a $2000 salvage value. Machine Y will cost $11,000 and have a life of 4 years with no salvage value. The annual maintenance cost for machines X and Y are $6000 and $5000 per year, respectively. A total of four operators will be required for the two machines at a rate of $22.50 per hour per person. In a normal 8-hour day, the four operators and two machines can produce 1000 cartons. The variable cost per carton associated with the in-house option is closest to: (choose one)
(a) $0.0625 (b) $0.10 (c) $0.72 (d) $0.81
As a substitute for the wage-incentive system, slaveowners most often used the
A. promise of eventual freedom. B. reward of some legal rights. C. the promise to slaves of a grant of private property to do tenant farming after a period of years of bondage. D. whip as a motivator. E. threat of death.
The recommended minimum polarization index for an AC motor is _____.
a. 1.0 b. 2.0 c. 3.0 d. 4.0