Industrial Electronics - May 2015

Mechanical Engineering (Semester 4)

TOTAL MARKS: 80
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks.

Solve any five question.Q1.(a,b,c,d,e,f)

1(a) Draw and explain labelled V-I Characteristics of Zener diode.(5 marks) 1(b) Classify single phase controlled rectifier.(5 marks) 1(c) State important features of op-amp.(5 marks) 1(d) Realize basic gates using NAND gate.(5 marks) 1(e) Explain back EMF in DC motor.(5 marks) 1(f) Draw generalized architecture of microcontroller.(5 marks) 2(a) Draw and explain single phase full bridge controlled rectifier with the help of waveforms for R-load, Derive the output voltage equation.(7 marks) 2(b) Explain architecture of MSP430.(7 marks) 2(c) Compare R & RC triggering methods of SCR.(6 marks) 3(a) Explain IC555 as monaostable multivibrator.(7 marks) 3(b) Compare CMOS and TTL logic family.(7 marks) 3(c) Draw and explain torque-speed characteristics of DC series and DC shunt motor, Also state applications of each.(6 marks) 4(a) Explain first order filter circuit.(7 marks) 4(b) Explain various registers used for digital I/O of MSP430.(7 marks) 4(c) Analyse torque-speed characteristics of induction motor. State various methods of speed conrol of induction motor.(6 marks) 5(a) What is commutation of SCR? Explain any one method in detail.(7 marks) 5(b) Explain closed loop speed control of DC motor, What is the necessity of inner current loop.(7 marks) 5(c) What is decoder, Demultipexer and flip-flop.(6 marks) 6(a) Explain suitability of different electric motors for various industrial applications.(7 marks) 6(b) Explain with appropriate waveforms the operation of single phase bridge inverter circuit.(7 marks) 6(c) Explain different peripherals of MSP430, Why is it called as mixed signal processor?(6 marks)