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Unformatted text preview: Page 1 of 9 EXAM 2 Fall 2003 ENGR 111B Introduction to Electrical and Computer Engineering Sections 201/202, 513/515, and 813/815 Duration: 90 minutes Name_______________________________________________ Student ID___________________________________________ Section No.______________ CLOSED BOOK. CLOSED NOTES. NO CALCULATOR ALLOWED. NO TEAMING. PLACE YOUR SCANTRON INSIDE YOUR EXAM BOOKLET BEFORE YOU HAND IT IN. The following formulas may be useful to you: V = I ⋅ R (Ohm’s Law) Q = C ⋅ V (Charge on a capacitor) U = 0.5 ⋅ C ⋅ V 2 = 0.5 ⋅ Q ⋅ V (Energy stored on a capacitor) P = I 2 ⋅ R = V 2 /R = I ⋅ V (Power) I = dQ/dt (Current) I = C ⋅ dV/dt (Capacitor current) V = L ⋅ dI/dt (Inductor voltage) DeMorgan’s Law: ~(A · B) = ~A + ~B ~(A + B) = ~A · ~B Note: This test uses the symbol ~ for NOT, + for OR, and · for AND. Part Type Problems Points per problem Points I True/False 1-5 1 5 II Matching 6-10 1 5 III Multiple Choice 11-25 2 30 IV Multiple Choice 26-40 4 60 Total 100 Page 2 of 9 I. True or False (1 point each) 1. A useful computer system needs only a CPU and memory. A. True B. False 2. A MOSFET has current flow between the gate and the source or drain. A. True B. False 3. The voltage across a silicon diode is always 0.7 V. A. True B. False 4. SRAM must be refreshed regularly to hold a value indefinitely. A. True B. False 5. The Hierarchy of Memory includes slow cheap memory closest to the processor and fast expensive memory farthest from the processor. A. True B. False II. Matching (1 point each) Match each of the following 6. Keyboard A. Processor 7. DRAM B. Input device 8. Speakers C. Network interface 9. Pentium D. Memory 10. Modem E. Output device III. Multiple Choice (2 points each) 11. The following memory type retains data with the power turned off. A. SRAM B. DRAM C. SDRAM D. Flash EEPROM E. None of the above 12. The following is not a true statement of a transistor: A. A transistor can be used as an amplifier....
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This note was uploaded on 04/29/2008 for the course ENGR 111 taught by Professor Walker during the Fall '07 term at Texas A&M.
- Fall '07