An MSP430 is being used to monitor the temperature an experimental chamber. The temperature sensing "thermistor" being used inside the chamber is linear across the temperature range of interest (-80°C to 120°C) with the conversion formula Vtemp=0.0042*(Temp Cº) + 1.20 volts. Required:
a. What are the voltages corresponding to the minimum and maximum temperatures?
b. What are the output voltage of the sensor and the output code of the ADC12 if the temperature inside the chamber is 45ºC.

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?

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