One 3" x 5" note card is permitted for this exam. Otherwise, the exam is closed book.
The note card must be turned in with the final exam.
Please check the most appropriate answer to the following statement:
I found the note card to be
What is the goal of doping a pure semiconductor? (1 pt.)
(What distinguishes the 0's from the 1's?) (1 pt.)
Discuss how "scratch resistance" is accomplished in the design of the CD. (A drawing would be nice...) (1 pt.)
If a typical printed page takes 3 kb (kilobytes) of storage, how many 10-page papers could be stored on a CD ROM? (1 pt.)
What does the circuit accomplish? (What does it do? -- in words!) (1 pt.)
(HINT: the two gates enclosed in the shaded box comprise a half-adder.)
Please label drawing above and columns below as needed to work out the truth table.
a. What is the current flowing in the circuit? (1 pt.)
b. What is the voltage across the 25 ohm resistor? (1 pt.)
c. What is the power dissipated by the 15 ohm resistor? (1 pt.)
d. What is the power delivered by the battery? (1 pt.)
Assume that service was disrupted to 300,000 residents, with average demand of 1200 W each. Calculate the minimum current rating needed for the breakers operating at 230 kV. (1 pt.)
|From Fall 1995 Exam:
At a SETI station (Search for Extra-Terrestrial Intelligence), the following binary signal
repeatedly appears in the microwave region of the electromagnetic spectrum. An alert
computer operator notices that the message has a meaning if decoded using an
What does the message say?
0101 0011 0110 0101 0110 1110 0110 0100 0010 0100 0010 0100Answer: Send$$
As a follow-up question this term, please compose the return signal:
Use ASCII representation of characters and write out as a binary sequence. (2 pts.)
.... .... .... .... .... .... .... .... .... .... .... ....