Calculate vO when vG = 3V. b. Specify the range of values of vG so that the operational amplifier operates in linear mode. c. Assume that vG = 2V and that the 34kΩ resistor is replaced with a variable resistor. What value of the variable resistor will cause the op-amp to saturate?

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.