Exhaust passages are included in some intake manifolds. Technician A says that the exhaust passages are used for exhaust gas recirculation (EGR) systems. Technician B says that the upper intake is often called the plenum. Which technician is correct?
A) Technician A only B) Technician B only
C) Both technicians A and B D) Neither technician A nor B
C
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Static pressure readings are taken on a duct system by:
A) Subtracting the velocity pressure from the total pressure. B) Pointing the pressure-sensing tube into the airstream. C) Subtracting the total pressure from the velocity pressure. D) Pointing the pressure-sensing tube perpendicular to the air stream.
If the contact on a PLC ladder logic rung is an examine off type, then
A) the field device must be a NO type of contact. B) power flows in the contact if the input pin associated with the examine off contact has zero volts present. C) the field device must be a NC type of contact. D) power flows in the examine off contact if the field device is a NC contact type and the contacts are in their normal position. E) None of the above