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Every Student Should Follow Table-1

1. The document provides instructions for an analog electronics lab exam, including 6 questions to answer about circuits and components. Students are asked to provide their name, student ID, and values for certain circuit parameters in a table. 2. The exam questions cover topics like the functions of oscilloscope buttons and knobs, analyzing clipper and clamper circuits, describing full-wave rectifier operation, comparing transistor biasing methods, calculating the beta value of a transistor circuit, and designing a transistor switching circuit. 3. Students are instructed to hand write solutions, scan their work, and submit it digitally within 60 minutes.

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Nafiz Sheikh
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70 views3 pages

Every Student Should Follow Table-1

1. The document provides instructions for an analog electronics lab exam, including 6 questions to answer about circuits and components. Students are asked to provide their name, student ID, and values for certain circuit parameters in a table. 2. The exam questions cover topics like the functions of oscilloscope buttons and knobs, analyzing clipper and clamper circuits, describing full-wave rectifier operation, comparing transistor biasing methods, calculating the beta value of a transistor circuit, and designing a transistor switching circuit. 3. Students are instructed to hand write solutions, scan their work, and submit it digitally within 60 minutes.

Uploaded by

Nafiz Sheikh
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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EEE 111L.

1 (Analog Electronics-I Lab)


Final Written Exam (Summer’ 2020)
Department of Electrical and Computer Engineering, NSU
Note: 1. Hand write the solutions, pdf, scan and then turn into Google classroom
2. Every student should follow Table-1

Answer all questions; Marks: 6x5=30 Time: 60 min.

1. Write down the functions of the indicated Knobs and Buttons of the Tektronix Digital Oscilloscope as
shown in Fig.1.

a b c d
Fig.1

2. Calculate Vo. Draw input and output wave shape of the clipper circuit shown in Fig.2

Vo

Fig.2
3. Find the theoretical value of Vo. Draw the input and output wave shape of the clamper circuit shown
in Fig. 3

Vo

Fig.3

4. Draw a full-wave rectifier circuit and describe its operation. If input frequency is 2.5 KHz, what will
be the output frequency?

5. Why self-biasing is better than fixed-biasing of a BJT circuit? Find the value of β from Fig.4.

R3 R2
100kΩ 100 % 470Ω
Key=A
V1
10V
R1 Q3
BD135
220kΩ

Fig.4

6. Design a transistor switching circuit according to given values. Describe how transistor act as a
switch?
Clipper(Question-2) and Clamper(Question-3) Fig.4(Question-5) Transistor Switching
Table-1 Circuit(Question-6)
Frequency Aplitude
No. Student ID Name
(KHz) (pk) VB/VB1 Diode Type V1(V) R2(Ω) R3(KΩ) hFE
1 1410213642 Iftekhar Alam Pial 1.0 5.0 1.5 Silicon 10 470 80.0 130
2 1420809042 Kamrun Nahar Shimu 1.1 6.0 2.0 Germinium 11 475 80.5 135
3 1421310042 Gigawashu Das 1.2 7.0 2.5 Silicon 12 480 81.0 140
4 1521584642 Md. Ashikur Rahman 1.3 8.0 3.0 Germinium 13 485 81.5 145
5 1522041642 Md. Rauful Islam Rony 1.4 9.0 3.5 Silicon 14 490 82.0 150
6 1530520642 Amzad Hossain Rafi 1.5 10.0 4.0 Germinium 15 495 82.5 155
7 1611170042 Hafiz Al Asad 1.6 11.0 4.5 Silicon 16 500 83.0 160
8 1611362042 Gazi Rasel Amin Ridoy 1.7 12.0 5.0 Germinium 17 505 83.5 165
9 1612528042 Sheikh Tojammel Hossain 1.8 13.0 5.5 Silicon 18 510 84.0 170
10 1620016042 Uchchwas Das 1.9 14.0 6.0 Germinium 19 515 84.5 175
11 1620660042 Md. Jafar Sadik 2.0 15.0 6.5 Silicon 20 520 85.0 180
12 1620671042 Md. Nur Afsar Talukder 2.1 16.0 7.0 Germinium 21 525 85.5 185
13 1620992042 H. M. Muktadir 2.2 17.0 7.5 Silicon 22 530 86.0 190
14 1631500042 Chand Sultana Mery 2.3 18.0 8.0 Germinium 23 535 86.5 195
15 1631729042 Md.Omar Faruq Chowdury 2.4 19.0 8.5 Silicon 24 540 87.0 200
16 1631831042 Aqeela Tasneem 2.5 20.0 9.0 Germinium 25 545 87.5 205
17 1632826042 Md. Sazidur Rahman 2.6 21.0 9.5 Silicon 26 550 88.0 210
18 1711459642 Faiaz Bin Hossain 2.7 22.0 10.0 Germinium 27 555 88.5 215
19 1722072642 Dukul Howlader Mohin 2.8 23.0 10.5 Silicon 28 560 89.0 220
20 1731268642 Md. Mohai Menur Rahman 2.9 24.0 11.0 Germinium 29 565 89.5 225
21 1811773042 Muhammad Saquib Saadat 3.0 25.0 11.5 Silicon 30 570 90.0 230
22 1812501642 Shahriar Alam Tonmoy 3.1 26.0 12.0 Germinium 31 575 90.5 235
23 1821274042 MOHSEU MINHAJ NILOY 3.2 27.0 12.5 Silicon 32 580 91.0 240
24 1912708643 Md Mejar Alam Liman 3.3 28.0 13.0 Germinium 33 585 91.5 245

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