A diesel engine is emitting black smoke, especially under load. Which of the following should be performed first?
A. check inlet restriction on fuel suction side
B. check air filter inlet restriction
C. check for high exhaust back pressure
D. perform an engine overhead adjustment
Answer: B
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____ holes are used for applications with flat head and oval head screws.
A. Countersunk B. Counterbore C. Drill D. Spotface
The nameplate on a motor indicates that the motor has an FLC of 15A and a service factor (SF) of 1.15. How much additional current can this motor safely handle for intermittent power demands?
a. 1.15A b. 1.75A c. 2.25A d. 3.25A
____ are added to the flux and form a slag.
A. Carbon, chromium, and vanadium B. Aluminum, silicon, and titanium C. Potassium, sodium, and zirconium D. Oxygen, argon, and nitrogen
Use the following engine dimensions to calculate the compression ratio
Bore: 3.880 in. Stroke: 3.250 in. Gasket thickness: 0.050 in. Deck height: 0.013 in. Piston dish volume: 4.5 cc Combustion chamber volume: 62.0 cc A) 9.0:1 B) 9.2:1 C) 9.3:1 D) 9.1:1