A capacitor with a reactance (XC) of 470 ? is in series with a 470 ? resistor. The combination is across a sine wave ac source producing 22 mA. Resistive power (PR) is
A) 22.7 mVAR B) 22.7 mW C) 227 mW D) 227 mVAR
C
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Which of the following is the least?
A. sin 17o B. sin 47o C. sin 37o D. sin 67o
Average height of 10 trees planted on reclaimed, mined-over land
Growth factor added Nothing added 100 kg/ha N 50 kg/ha P 2 cm/wk water no lime 56 45 63 50 lime added 85 170 58 62 Based on the data given in the Table, if the revegetation site were limed and fertilized with nitrogen, would you also recommend the addition of P fertilizer to improve tree growth? A) yes B) no C) no basis to judge
The difference between residential heating and cooling systems and commercial/industrial heating, cooling, or refrigerating facilities is:
A) Whether the equipment or system is in a home or in a business. B) The amount of energy the building or facility uses. C) The size of the building or facility. D) The number of people that occupy the building or facility.
Electrode leads and work leads should be the same diameter
Indicate whether the statement is true or false