Technician A says that fuel cell cooling systems can use heat exchangers with small surface areas. Technician B says that fuel cell cooling systems must use heat exchangers with large surface areas. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
B
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Which of these facts is correct about a delta-wound stator?
A) The windings always form a series circuit B) No neutral junction C) The circuit diagram looks like a parallelogram D) No ground connection
What was the most deadly challenge Native Americans faced as a result of the encounter with Europeans?
a. mounted men b. guns and armor c. microbes d. invasive animals and plants
The relationship between the mass flow rate and the volume flow rate is given by
a. mass flow rate is equal to (time)(volume flow rate) b. mass flow rate is equal to (density)(volume flow rate) c. mass flow rate is equal to (mass)(volume flow rate) d. none of the above
___________ is a generic term for a number of industrial network protocols designed to provide real-time control of devices.
A. Ethernet/IP B. Fieldbus C. DeviceNet D. ControlNet