Electronic Final Exam Paper
INTERNATIONAL ISLAMIC UNIVERSITY MALAYSIA
END OF SEMESTER EXAMINATION SEMESTER I, 2005/2006 SESSION
KULLIYYAH OF ENGINEERING
Programme Time Duration : ENGINEERING : 2:30 pm - 5:30 pm : 3 Hrs Section(s) : 3 Level of Study Date : UG 1 : 24/10/2005
Course Code : ECE 1312 Course Title : Electronics
This Question Paper Consists of Eight (8) Printed Pages (Including Cover Page) With Six (6) Questions. INSTRUCTION(S) TO CANDIDATES
DO NOT OPEN UNTIL YOU ARE ASKED TO DO SO
• • •
Total marks of this examination is 100. This examination is worth 40% of the total assessment. This examination consists of two parts. You are required to answer all questions from part A and choose any 3 (three) questions from part B.
Any form of cheating or attempt to cheat is a serious offence which may lead to dismissal.
Electronics Part A (Answer all questions)
ECE 1312
Q.1 [10 marks] 1. A PN junction is forward biased when: a. the applied potential causes the N-type material to be more positive than the P-type material b. the applied potential causes the N-type material to be more negative than the P-type material c. both materials are at the same potential d. all of the above e. none of the above 2. Which of the following circuits is used to change the dc reference of a signal without changing the shape of the signal? a. a clipper b. a clamper c. a voltage multiplier d. a voltage divider e. none of the above 3. The circuit shown in Fig.1. is a : a. series clipper b. shunt clipper c. series clamper d. shunt clamper e. all of above Fig.1. 4. The maximum reverse bias potential that can be applied to a Zener diode before it enters the Zener region is called the: a. threshold voltage b. peak inverse voltage c. barrier voltage d. depletion voltage e. none of the above 5. In the Zener region, the current can increase a lot and the voltage across the diode _________. a. can increase a lot b. is almost constant c. is almost constant d. can increase a lot e. none of the
END OF SEMESTER EXAMINATION SEMESTER I, 2005/2006 SESSION
KULLIYYAH OF ENGINEERING
Programme Time Duration : ENGINEERING : 2:30 pm - 5:30 pm : 3 Hrs Section(s) : 3 Level of Study Date : UG 1 : 24/10/2005
Course Code : ECE 1312 Course Title : Electronics
This Question Paper Consists of Eight (8) Printed Pages (Including Cover Page) With Six (6) Questions. INSTRUCTION(S) TO CANDIDATES
DO NOT OPEN UNTIL YOU ARE ASKED TO DO SO
• • •
Total marks of this examination is 100. This examination is worth 40% of the total assessment. This examination consists of two parts. You are required to answer all questions from part A and choose any 3 (three) questions from part B.
Any form of cheating or attempt to cheat is a serious offence which may lead to dismissal.
Electronics Part A (Answer all questions)
ECE 1312
Q.1 [10 marks] 1. A PN junction is forward biased when: a. the applied potential causes the N-type material to be more positive than the P-type material b. the applied potential causes the N-type material to be more negative than the P-type material c. both materials are at the same potential d. all of the above e. none of the above 2. Which of the following circuits is used to change the dc reference of a signal without changing the shape of the signal? a. a clipper b. a clamper c. a voltage multiplier d. a voltage divider e. none of the above 3. The circuit shown in Fig.1. is a : a. series clipper b. shunt clipper c. series clamper d. shunt clamper e. all of above Fig.1. 4. The maximum reverse bias potential that can be applied to a Zener diode before it enters the Zener region is called the: a. threshold voltage b. peak inverse voltage c. barrier voltage d. depletion voltage e. none of the above 5. In the Zener region, the current can increase a lot and the voltage across the diode _________. a. can increase a lot b. is almost constant c. is almost constant d. can increase a lot e. none of the