The ____ is the oldest optoelectric device. It is a light-sensitive device in which the internal resistance changes with a change in light intensity.
A. photodiode
B. solar cell
C. photo cell
D. light-emitting diode
Answer: C
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Technician A says that a pre-2010 ISX engine uses concept gears in the timing gear train. Technician B says that the ISX engine uses a single slab cylinder head. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
Technician A says that the high voltage batteries in all hybrid electric vehicles are cooled and maintained at the same temperature as the engine's coolant system (195-210°F.) Technician B says many hybrid electric vehicle high voltage systems are water cooled by separate cooling systems that operate in much the same way as the engine cooling system. Which technician is correct?
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The speed of a typical modem is how many bits per second?
A) 33,000 B) 28,000 C) 56,000 D) any one of the above
A truck driver charges $1.88 for each parcel that is delivered. In one day $289.52 is collected. How many parcels are delivered?
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