To engage the four-wheel-drive system into four-wheel-drive high range on manual shift on-the-fly (MSOF) transfer case, the vehicle must be moving at about what speed?
A) Less than 10 MPH (16 km/h)
B) Low speed usually under 50 MPH (80 km/h)
C) Completely stopped
D) At any speed
Answer: B) Low speed usually under 50 MPH (80 km/h)
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The Poynting equation (Poynting correction) should NOT be used…
A. …in industry as it is too empirical. B. …for solids. C. …when the ideal gas law does not apply. D. …without reliable data, such as a saturation curve, that appropriately describes the vapor pressure of the substance. E. …at all as it has been superseded by more accurate equations.
The metric unit of measurement for pressure is:
a. psi b. gpm c. kpi d. kPa
Branch selectors are boxes in heat recovery VRF systems that allow:
A) One refrigerant line to feed a single indoor unit. B) Multiple refrigerant lines to feed multiple indoor units. C) One refrigerant line to feed multiple indoor units. D) Multiple refrigerant lines to feed a single indoor unit.
What is the temperature differential between water in and water out of a heat exchanger that has transferred 50,000 Btu/h? The flow rate is 10 gallons per minute.
A. 10° B. 20° C. 50° D. 5°