The amount of capacitance needed can be determined by connecting a(n) ____, ammeter, and voltmeter to the circuit.
A. coulometer
B. megohmmeter
C. wattmeter
D. ohmmeter
Answer: C
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In a cable tray when the minimum spacing is maintained, a(n) ____________________ cable tray is frequently required.
Fill in the blank(s) with the appropriate word(s).
A special activity planned and conducted to aid in learning is called a(n) ____________________
ANS: project
The roof of a house consists of a 15-cm-thick concrete slab (k = 2?W/m•K) that is 15 m wide and 20 m long. The emissivity of the outer surface of the roof is 0.9, and the convection heat transfer coefficient on that surface is estimated to be 15?W/m2•K. The inner surface of the roof is maintained at 15°C. On a clear winter night, the ambient air is reported to be at 10°C, while the night sky temperature for radiation heat transfer is 255 K. Considering both radiation and convection heat transfer, determine the outer surface temperature and the rate of heat transfer through the roof. If the house is heated by a furnace burning natural gas with an efficiency of 85 percent, and the unit cost of natural gas is $0.60/therm (1?therm = 105,500 kJ of energy content), determine the
money lost through the roof that night during a 14-h period. What will be an ideal response?
When should DTCs be cleared?
A) After the problem has been verified. B) After the repair has been verified. C) After pinpointing a problem cylinder D) After consulting TSBs