Las tablas y graduaciones que eliminan muchos cálculos están disponibles en la escuadra:
a. de cabezal central.
b. de edificio.
c. de combinación triangular.
d. de instalación de tubería.
Answer: D
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The default carbon dioxide emission factor for biodiesel fuel is 70,800 kg/TJ, and the emission factor for diesel fuel is 74,100 kg/TJ.
a. Which diesel fuel, biodiesel or “regular” diesel fuel, has the greater carbon intensity per unit of energy? b. What are their respective carbon intensities compared to natural gas? c. If a city were to invest in climate-friendly buses for public transportation, should it choose a diesel-powered bus, a biodiesel-powered bus, or a natural gas-powered bus? What will be an ideal response?
What is located at the bottom center of the head?
Refer to Drawing Numbers E492877 R0 and E482878 R0.
Performing work on or near energized equipment above ground with a potential of 50 volts or greater requires a(n) _____.
a. hot work permit b. electrical hot work permit c. lockout/tagout d. confined space permit
A synchronous motor is rated at 100 kVA. The motor is connected to an infinite bus of 5 kV. The synchronous reactance of the motor is 0.1 ?. The motor is running at a no-loading condition (real power output is zero). All losses can be ignored. Calculate the equivalent field voltage Ef that operates the motor as a synchronous condenser delivering 100 kVAR to the infinite bus. Draw the phasor diagram. (A synchronous condenser produces reactive power and no real power.)
What will be an ideal response?