How does atmospheric pressure affect engine operation?
What will be an ideal response?
The PCM must calculate how much fuel is needed based on the amount of air entering the engine. As atmospheric pressure decreases, less air available for the engine and less fuel is required.
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An acute angle has _____.
a. less than 90 degrees b. more than 90 degrees c. exactly 180 degrees (a flat line) d. more than 90 degrees, but less than 180 degrees
What do we mean by “enemies” of the forest?
What will be an ideal response?
The Darcy–Weisbach equation states that the power-generating capacity in a hydroelectric system that is lost due to head loss is given by P=??QH, where ? is the efficiency of the turbine, ? is the specific gravity of water,Q is the flow rate, and H is the head loss. Assume that ?=0.85 ± 0.02, H=3.71± 0.10m, Q=60± 1m3/s, and ?=9800N/
with negligible uncertainty.
a. Estimate the power loss (the units will be in watts), and find the uncertainty in the estimate. b. Find the relative uncertainty in the estimated power loss. c. Which would provide the greatest reduction in the uncertainty in P: reducing the uncertainty in ? to 0.01, reducing the uncertainty in H to 0.05, or reducing the uncertainty in Q to 0.5?
Technician A says that a pickup coil (pulse generator) can be tested with an ohmmeter. Technician B says that ignition coils can be tested with an ohmmeter. Who is right?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B