Technician A says that advancing diesel fuel injection timing by one degree can cause greatly increased NOx in the end gas. Technician B says that retarding diesel fuel injection timing tends to increase the output of HC in the exhaust gas. Who is correct?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A nor B
Answer: C
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Use the following engine dimensions to calculate the compression ratio
Bore: 13.50 cm Stroke: 15.80 cm Gasket thickness: 0.20 cm Deck height: 0.30 cm Piston dish volume: 52.8 cc Combustion chamber volume: 0 cc A) 19.5:1 B) 19.8:1 C) 19.2:1 D) 20.2:1
When an ac voltage is supplied to an RL circuit, the ac's current and amplitude will be:
A) lagging the voltage. B) varying in the same manner. C) similar in waveform. D) all of these.
Which important function does a cripple jack rafter serve in roof framing?
A) Provides a designated area for walking on the roof B) Provides nailing areas for roof sheathing C) Increases surface area of the roof D) Decreases structural integrity of the roof
Break lines are used to terminate features on a drawing when the extent of the feature has been clearly defined and no additional detail is needed.
Answer the following statement true (T) or false (F)