GTU BE 8th Semester 2182408 Programmable Logic Controller for Power Electronics(Departmental Elective III) Summer 2018 Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE – SEMESTER ?VIII (NEW) – EXAMINATION ? SUMMER 2018
Subject Code: 2182408 Date: 30/04/2018
Subject Name: Programmable Logic Controller for Power
Electronics(Departmental Elective III)
Time: 10:30 AM to 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Define PLC. State need of PLC in automation. 03
(b) State advantages and disadvantages of PLC. 04
(c) List the five standard PLC languages as defined by the International Standard
for Programming Logic Controllers and give a brief description of each.
07
Q.2 (a) List the types of PLC and explain any one in brief. 03
(b) Explain in short: 1. Relay Instruction 2. Data Handling Instruction. 04
(c) Draw the block diagram of PLC. Explain the analog modules & system used in
PLC for signal processing.
07
OR
(c) Explain the BCD or Multi bit data processing using PLC. 07
Q.3 (a) Define following terms : 1. Scanning Cycle 2. Scanning Time 3. Speed of
Execution.
03
(b) List the types of Register used in PLC and explain general characteristics of
register.
04
(c) List the basic programming language of PLC. Define Ladder Logic. Implement
PLC ladder logic for 2 to 4 Decoder.
07
OR
Q.3 (a) List and explain operation faults of PLC. 03
(b) List the input and output device used with PLC with their functions. 04
(c) List the basic programming language of PLC. Define Ladder Logic. Implement
PLC ladder logic for 4:1 Multiplexer.
07
Q.4 (a) List the log function possible with PLC. Explain one with suitable example. 03
(b) Explain addition and subtraction function using PLC with suitable example. 04
(c) Explain PLC SKIP and MASTER CONTROL RELAY function with suitable
example.
07
OR
Q.4 (a) List the trigonometric function possible with PLC. Explain one with suitable
example.
03
(b) Explain multiplication and division function using PLC with suitable example. 04
(c) Explain PLC FIFO function and FAL function with suitable example. 07
Q.5 (a) Explain with suitable example Jump function with non- return. 03
(b) Explain how a matrix function is applied to reduce program length in PLC? 04
(c) Draw the necessary diagram and Explain Basic two axis ROBOT with PLC
sequencer control.
07
OR
Q.5 (a) Explain with suitable example Jump function with return. 03
(b) List the shift Register in PLC. Explain Shift Register function with suitable
application.
04
(c) Draw the necessary diagram and Explain industrial three axes ROBOT with
PLC sequencer control.
07
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