How is diesel fuel ignited in a warm diesel engine?
A) Glow plugs B) Spark plugs
C) Distributorless ignition system D) Heat of compression
D
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In what year was API CJ-4 lube oil introduced?
A. 2004 B. 2006 C. 2007 D. 2010
Why is evacuating a refrigeration system important?
A) Evacuation increases the system head pressure and compression ratio. B) Increases in the system high-side pressure and temperature can only be accomplished by proper evacuation. C) Evacuation is the only procedure to ensure that noncondensable gases and moisture are removed from HFC systems with a POE lubricant. D) Noncondensable gases and moisture, the two most common system contaminants, can be removed through evacuation.
A voice signal occupying the frequency band of 0.4 to 3.5 kHz is used to amplitude-modulate a 10-MHz carrier. Determine the range of frequencies for the lower and upper sidebands.
What will be an ideal response?
In a single-phase motor, the resistance of the run winding will be _____
a. less than that of the start winding b. slightly more than that of the start winding c. equal to that of the start winding d. exactly twice that of the start winding