Consider an inverting amplifier circuit designed using an op amp and two resistors, r1 = 10 k and r2 = 1m . if the op amp is specified to have an input bias current of 100 na and an input offset current of 10 na, find the output dc offset voltage resulting and the value of a resistor r3 to be placed in series with the positive input lead in order to minimize the output offset voltage. what is the new value of vo ?

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.