Soft faults are being discussed. Technician A says a soft fault should be diagnosed before diagnosing any hard faults. Technician B says a soft fault is intermittent. Who is correct?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A nor B
Answer: B
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A piston-cylinder device initially contains 100 kg of liquid water at T = 353.15 K and P = 0.1 MPa. The device is isobarically heated, expanding against an external pressure of 0.1 MPa, until exactly 12 % of the water has vaporized, with the rest remaining in the liquid phase. How much heat was added?
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