See attachment for better symbol representation and diagrams.
1. The diagram of FIGURE 1 represents a meter shunted by a parallel resistance RS.
(a) Determine the required value of the shunt resistance if the maximum value of the current I is 200 A. The meter can read a maximum READ MORE »
Q1. A 9 V power supply delivers 2 A to a resistive load. The a.c. supply is 230 V, 50 Hz and a bridge rectifier is used in conjunction with a 0. 047 farad reservoir capacitor.
(a) The peak-to-peak ripple voltage.
(b) The transformer secondary voltage if the total forward voltage
drop i READ MORE »
FIGURE 1 shows the electrostatic equivalent circuit of a human being. A person is charged to 20 kV and touches an object having a 50 Ω resistance to ground. Determine the following:
(a) the maximum current which will flow in the object
(b) the rise time of the current
(c) the decay time of the READ MORE »
Determine the voltage VO in the circuit of FIGURE 1 for:
(a) β = 50, VBE = 0.7 V
(b) β = 250, VBE = 0.7 V.
Comment on the significance of your result.
(Figure 1 attached)
1. Compute the unit-pulse response h[n] for n=0, 1, 2 for the discrete time system
y[n+2] + 1/2y[n+1] + 1/4y[n] = x[n+1] - x[n]
2. Determine if each of the following signals is periodic. If a signal is periodic, what is its period?
x[n] = 3sin(100n)
x[n] = 4cos(1.5πn)
3. For the d READ MORE »