QUESTION ONE (20 MARKS)

No. 737002

BACHELOR OF ENGINEERING (BE)

EXAMINATION

JUNE 2001

CIRCUITS AND SIGNALS

TIME ALLOWED:2 hours

TOTAL :100 marks

Instructions:Attempt all questions.

All answers except diagrams and sketches must be in ink.

Correcting fluid is not permitted.NOTES:Marks allocated to each question are shown in brackets at the end of each question.

Candidates should show all working in calculations.

QUESTION ONE (20 MARKS)

For the circuit shown:

a) Calculate the value of load resistance (Rload) that will cause maximum power to be delivered to Rload.

b) With the value of Rload found in part a) in place, calculate V1 and V2.

c) Calculate the power delivered to Rload when it has the value calculated in part a).

QUESTION TWO (20 MARKS)

For the circuit shown, calculate I1 and I2.

QUESTION THREE (20 MARKS)

a) Design a passive filter circuit that has the frequency response shown:

b) Calculate the Z parameters for the compensated transmission line shown. All reactances are in ohms.

QUESTION FOUR (20 MARKS)

Find the transfer function for the filter circuit shown below and draw the gain bode diagram for the circuit.

QUESTION FIVE (20 MARKS)

Derive the transfer function for the second order band pass filter circuit shown below:

. AUT BE Year Two Circuits and Signals (Circuits)

Exam Solutions June 2001

Examiner DNutt