A thermocouple is placed in an exhaust pipe in a diesel engine. Thermocouple is reading 500oC, while the exhaust pipe is at a temperature of 350oC. Thermocouple used to measure the temperature of a gas flow is constructed of two bare wires. Thermal conductivity of one wire is 19.2 W/m-k and the other is 29.8 W/m-k. Heat transfer coefficient between gas and each wire is 200 w/m^2-k. Estimate the conduction error in the measurement of gas temperature. The wire is 5 cm long and 1.5 mm in diameter.

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.

Assuming compressible flow of air and that the measurements are done at flagstaff a pitot static tube that gives the difference of total and static pressure measures 0.35 m of mercury. what is the velocity of air? assume the temperature to be 300k. (submit your excel or matlab calculation sheet)