Power balance testing is being discussed. Technician A says that during testing, a large drop in rpm indicates a cylinder that is not producing necessary power. Technician B says that on some vehicles, this test can be performed with a scan tool because of factory programing. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B
Answer: B
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Saturated liquid water at 200 kPa enters an insulated mixing chamber at a rate of 15 kg/s. The water is mixed with superheated steam at 200 kPa and 125°C. The combined flow will exit as a saturated mixture at 200 kPa. Using your mixing chamber model to calculate the data, plot the quality of the combined exit flow for superheated steam entrance flow rates ranging from 5 kg/s to 200 kg/s.
State 1: Liquid inlet; State 2: Steam inlet; State 3: Outlet Given: P1 = P2 = P3 = 200 kPa; x1 = 0.0; T2 = 125°C; x3 = 1.0; m?1= 15 kg/s Assume: Q?=0 (insulated). Given no other information regarding the mixing chamber, make the following common assumptions: W?=?KE=?PE=0 Also, assume the mixing chamber is a multiple-inlet, single-outlet, steady-state, steady-flow device. What will be an ideal response?
Electric power steering systems take the place of _______ power steering systems
A) Vacuum B) Hydraulic C) Air-powered D) Partial
Select the techniques that can be used to speed up refrigerant recovery. (You may select more than one.)
A) Use large-diameter hoses. B) Use long hoses. C) Cool the recovery cylinder. D) Heat the refrigerant system. E) Recover from both sides of the system at once. F) Heat the recovery cylinder.
A combination valve includes ________
A) Proportioning, metering, and pressure-differential valves B) Proportioning and pressure-differential valves C) Metering and proportioning valves D) Any of the above depending on the make and model of the vehicle