What's the most important part of an electric furnace installation?
A) The size of the fan.
B) The installation of the pump.
C) The sizing of the wiring.
D) The placement of the thermostat.
Answer: C) The sizing of the wiring.
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If a truck diesel engine is said to be operating in isochronous mode, which of the following is it most likely doing?
A. using the PTO to pump load B. running a long downhill gradient C. climbing uphill D. running in toque rise
Use MATLAB to find the voltages at nodes a, b, c, and d in the circuit of Fig. 3.77.
 FIGURE 1.png)
A recent attempt to circumnavigate the world in a balloon used a helium filled balloon whose volume was 7240 m3 and surface area was 1800 m2. The skin of this balloon is 2 mm thick and is made of a material whose helium diffusion coefficient is 1?10-9 m2/s. The molar concentration of the helium at the inner surface of the balloon skin is 0.2 kmol/m3 and the molar concentration at the outer surface is extremely small. The rate at which helium is lost from this balloon is
(a) 0.26 kg/h (b) 1.5 kg/h (c) 2.6 kg/h (d) 3.8 kg/h (e) 5.2 kg/h
What is the purpose of the white ceramic pieces on the strip heaters?
A) They concentrate the heat of the strips. B) They insulate the heater wire from the metal frame supporting it. C) They make it easier to identify where the heat strips are installed. D) They seal the heat produced by the strips inside the furnace.