Which step should be performed LAST when diagnosing an engine performance problem?
A) Performing a thorough visual inspection
B) Verifying the repair
C) Checking for any technical bulletins
D) Checking for any stored diagnostic trouble codes
B
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An existing steady state liquefaction process has been taking in 10 kg/s of nitrogen at P = 0.1 MPa and T = 298.15 K, and producing 10 kg/s of saturated liquid nitrogen. Due to a process upset, the temperature of the nitrogen entering the process increases to T = 300 K. Which of the following is a likely consequence?
A. The quality of the liquid nitrogen will decrease. B. The energy load on the heat exchanger(s) in the system will rise. C. The flowrate in will fall below 10 kg/s. D. The process will explode. E. The nitrogen will begin to react with itself, forming diatomic molecules.
Define command line history and describe its usage.
What will be an ideal response?
Which switching device uses a shutter blade and sensor to detect a magnetic field?
A) Pickup coil
B) Hall-effect switch
C) Optical sensor
D) Ignition coil
Which of the following tools is different from the rest with respect to the shape of the nut or screw that it turns?
A. open end wrench B. combination wrench C. Allen wrench D. adjustable wrench