Using the stiffness method, analyze the frame in Figure P16.4 and draw the shear and moment curves for the members. Neglect axial deformations. EI is constant.
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When the hydrogen required by a fuel cell is ‘reformed' from a gasoline source, what is the undesirable byproduct?
A. carbon B. static electricity C. depleted gasoline D. propane
Packaged chillers with air cooled condensers usually use
A) hydrostatic chillers B) flooded chillers C) hydroponic chillers D) Direct expansion (DX) chillers
An output gate is connected to four input gates; the circuit does not function. Preliminary tests with a DMM indicate that power is applied; scope tests show that the primary input gate has a pulsing signal, while the interconnecting node has no signal. The four load gates are all on different IC's. Which instrument will best help isolate the problem?
A) Logic probe B) Logic analyzer C) Oscilloscope D) Current tracer
An inductor (L) and a capacitor (C) are in series across a sine wave ac source. Voltage across the inductor is 15 V and voltage across the capacitor is 20 V. The source voltage (VS) is
A) 5 V ?180° B) 15 V ?90° C) 5 V ?-90° D) 5 V ?90°