A windmill consists of a motor, rotating blades, and structure. Explain the operation of the system when wind speed rotates the shaft of the motor at a speed higher than its no-load speed. In which quadrant does the machine operate?
What will be an ideal response?
The machine (any motor can equivalently operate as a generator) operates in the
fourth quadrant with power flowing into the system from the wind.
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?Technician A says a transmission orifice is a bore in a passage that is larger than the connecting passages. Technician B says an orifice is used to dampen a fluid flow to prevent sudden or undue movement of a control valve. Who is correct?
A. ?A only B. ?B only C. ?Both A and B D. ?Neither A nor B
Which of the following will determine how much fuel is injected by a Cummins HPI-TP injector in any given cycle?
A. duration (time) the metering actuator is energized B. fuel quantity in the timing chamber C. length of the metering plunger stroke D. common rail pressure
Monocultures are susceptible to pest outbreak
Indicate whether the statement is true or false
Most newer compressors use a __________ seal on the compressor shaft
A) Cork B) Ceramic C) Lip D) Boron