Andhra University 2011 B.E Mechanical Engineering Iii/iv - Question Paper

[03-3110]
III/IV B.E. DEGREE exam


MECHANICAL ENGINEERING
1st SEMESTER
INDUSTRIAL ELECTRONICS
(Effective from the admitted batch of 2006-07)
Time: three hours Maximum: 70 marks


Question no. one is compulsory
Answer any 4 ques. from the remaining
All ques. carry equal marks.
Assume suitable missing data wherever necessary.

1. ans the subsequent.
(a) Distinguish ranging from ordinary diode and zener diode.
(b) Draw the circuit diagram of transistor CB configuration.
(c) What is forward breakdown volatge of an SCR?
(d) elaborate applications of oscillators?
(e) What is a flip flop?
(f) Differentiate ranging from open and closed loop systems.
(g) Differentiate ranging from PROM and EPROM.

2.(a) Derive the expression for the electro magnetic deflection sensitivity
in the case of the CRT.
(b) What is the effect of forward and reverse biasing of p-n junction on the depletion
region? discuss with necessary diagrams.

3.(a) elaborate dv/dt and di/dt ratings of SCRs. What happens if these values are exceeded?
discuss.
(b) elaborate various methods of turning off an SCR. discuss all methods in detail.

4.(a) List the applications of dielectric heating.
(b) discuss the theory behind the induction heating.

5.(a) Draw and discuss the circuit diagram of FWR with L-section filter. What is its
ripple factor?
(b) Compare the performance of HWR using capacitor filter, inductor filter and L-section
filter.

6. discuss open loop and closed loop servo mechanisms with an example.

7.(a) Minimize the subsequent Boolean expressions to the needed no. of literals
i) BC+ AC'+ AB+ BCD to 4 literals.
ii) ABC+ A'B'C+ A'BC+ ABC'+ A'B'C' to 5 literals.
(b) find compliment and dual for the provided expression (AB+BC+AC)(EF).

8.(a) discuss the addressing modes of 8085 with a neat diagram.
(b) Write an assembly language program to multiply 2 8-bit numbers in 8085.

Earning:   Approval pending.