Download GTU BE/B.Tech 2019 Summer 5th Sem Old 150203 Power Electronics And Control Engineering Question Paper

FirstRanker.com

GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- V(OLD) EXAMINATION - SUMMER 2019

--- Content provided by⁠ FirstRanker.com ---

Instructions:

1. Attempt all questions.

--- Content provided by FirstRanker.com ---

2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a) Draw and explain SCR construction in detail. Also draw and explain SCR V-I characteristics with different operation modes. 07
(b) Explain speed control of DC motor using SCRs. 07

Q.2 (a) Explain the construction and characteristics of the TRIAC. 07

--- Content provided by‌ FirstRanker.com ---

OR

Q.2 (a) Explain construction & characteristics of UIT with neat diagram. 07
(b) Explain variable reactance method for current control in welding process. 07

Q.3 (a) Write short note on thermocouples and strain gauge. 07

--- Content provided by‌ FirstRanker.com ---

OR

Q.3 (b) Explain the basic principle of operation of induction heating and list the advantages of induction heating. 07

Q.4 (a) Draw & explain torque-speed characteristics of DC motor. 07
(b) Draw & explain architecture of microprocessor 8085. Also explain function of various pins. 07

Q.5 (a) Draw and explain memory classification. 07

--- Content provided by‌ FirstRanker.com ---

OR

Q.5 (b) Explain following instruction with example (i) LDA(i1) JNZ(iii) CMP(iv) LXI(v) STAX(vi) RRC (vii) LHLD 07

Q.4 (a) Explain the programming registers model and flag register in detail. 07
(b) Explain Digital to analog converters. 07

Q.5 (a) Explain ladder diagram and ignitron contactors. 07

--- Content provided by FirstRanker.com ---

OR

Q.5 (b) Draw the block diagram of PLC and describe each block in detail. 07
(c) Explain Analog to digital converters. 07