We wish to sample a small signal that is on top of a large dc offset using a daq (digital acquisition system such as your nscope) that has a limited input voltage range of ±5 v. if the signal is modeled as vin=0.05sin(wt)+10 v where 0.05sin(wt) v is the signal and 10v is the dc offset, design a circuit using one op-amp that removes the dc offset then amplifies the signal by a factor of 20
repeat problem 1 but using only one op-amp

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater