This download link is referred from the post: GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-III (New) EXAMINATION — WINTER 2018
--- Content provided by FirstRanker.com ---
Subject Code:2132003 Date:01/12/2018
Subject Name:Design Concepts in Basic Electronics
Time:10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
--- Content provided by FirstRanker.com ---
Q.1 (a) Explain in detail different types of breakdown in diode. 03
(b) What are the factors affecting the stability of Q point? 04
(c) Explain DC load line and Q-point for any transistor configuration. Also state the necessity of biasing and list biasing methods for transistor 07
--- Content provided by FirstRanker.com ---
Q.2 (a) What is energy band diagram? 03
(b) Explain with circuit diagram positive clamper and negative clamper. 04
(c) Explain the input output characteristics of n-p-n transistor in CE configuration. Also indicate different regions. 07
OR
(c) A circuit receive a 4-bit excess-3 code. Design a minimal circuit to detect a decimal number 0,1,4,6,7 and 8 07
--- Content provided by FirstRanker.com ---
Q.3 (a) Draw and explain internal construction of encoder. 03
(b) Explain in detail bidirectional shift register with parallel load 04
(c) Design a combinational logic to convert given BCD to seven segment display LED. 07
OR
Q.3 (a) Write the points of difference between combinational and sequential logic. 03
--- Content provided by FirstRanker.com ---
(b) Draw the circuit diagram of D-type positive edge triggered flip flop 04
(c) Write a note on collector to base bias. 07
Q.4 (a) What is ripple counter? 03
(b) Implement 32x1 Multiplexer using four 8x1 Multiplexer and one 4x1 Multiplexer 04
(c) A p-n-p germanium transistor is used in the self biasing arrangement with VCC =5V, Rl:=27k,R2 =3k, RE=270 Q, RC =2k and β = 50. Find VCEQ and ICQ. 07
--- Content provided by FirstRanker.com ---
OR
Q.4 (a) Explain with example working of transistor as switch. 03
(b) Design 3- bit up synchronous counter. 04
(c) The fixed bias circuit of Fig. uses a silicon transistor. The component values are RC = 500 Q and RB = 100 kQ. Bdc of the transistor is 100 at 30°C and increases to 120 at a temperature of 80°C. Determine the percent change in the Q point values over this temperature range. Assume that VBE and ICBO remain constant. 07
Rg = 5000
--- Content provided by FirstRanker.com ---
By = 100 at 30°C
=120at80°C
Q.5 (a) Explain the requirement of compliment in digital logic. 03
(b) Implement the following function with help of 8x1 Multiplexer. 04
F(A,B,.C,D)=Σ (0,1,3,4,8,9,15)
--- Content provided by FirstRanker.com ---
(c) Explain with neat diagram Voltage divider bias 07
OR
Q.5 (a) Why we require master slave or edge triggered flip flop 03
(b) Write a short note on surface mount transistors. 04
(c) Compare in detail RTL, DTL, TTL, ECL and CMOS. 07
--- Content provided by FirstRanker.com ---
This download link is referred from the post: GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
--- Content provided by FirstRanker.com ---