BNG 318 Biomeasurement and Control Quiz# 4 Due : Feb 18, 2015
1. Find the currents I1, I2 and I3 in the circuit shown below. Hint Use KCL and KVL and mesh analysis. (W should be in ohms for the resistors)
2.The following signal, v = v0 sin wt, where v0 =10 V, f = 30 Hz.
a. Find w in rad/s and amplitude.
b. Find period T and RMS voltage
c. If time advance t = 0.2 sec, find phase angle difference.
You are given AC circuit (low pass filter) below.
a. Find VC /Vin from ZC/(ZR+ZC) : Hint see slide #40
b. Suppose Vin = 10 cos (377 t ), find corresponding phasor Vinand VC
c.Convert Vc in problem b to the time function, Vc = A cos (377t +f). Note that no frequency shift, only amplitude and phase change.
4.You are given a DC transistor circuit below. Find IB, IC and IE. Then find VC, and VB. Assume VBE =0.7 V, b =200.