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Download GTU B.Tech 2020 Summer 6th Sem 2161709 Programmable Logic Controller Question Paper

Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Summer 6th Sem 2161709 Programmable Logic Controller Previous Question Paper

This post was last modified on 04 March 2021

This download link is referred from the post: GTU BE 2020 Summer Question Papers || Gujarat Technological University


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Seat No.:

Enrolment No.

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER- VI EXAMINATION — SUMMER 2020

Subject Code: 2161709

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Subject Name: Programmable Logic Controller

Time: 10:30 AM TO 01:00 PM

Date: 29/10/2020

Total Marks: 70

Instructions:

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  1. Attempt all questions.
  2. Make suitable assumptions wherever necessary.
  3. Figures to the right indicate full marks.
Q.1 MARKS
(a) List 3 companies which manufacture PLC 03
(b) List out 4 sensors/devices which can be used as digital inputs. 04
(c) Draw and explain block diagram of PLC 07
Q.2
(a) List out 3 parts of PLC scan cycle. 03
(b) State the full form of ROM, PROM, EPROM and EEPROM 04
(c) Write a PLC ladder program for level control of tank (i.e. empty and fill the tank) using latch/unlatch instruction and without using latch/unlatch instruction. 07

OR

Q.2
(c) Three conveyors fed a main conveyor. The count from each feeder conveyor is fed into an input register in PLC. Construct a PLC program to obtain the total count of parts on the main conveyor. Use a timer to update total count every 15 seconds. 07
Q.3
(a) Prepare a ladder logic for the following statement: Switch 8 and Switch 11, plus either switch 22 or switch 34, must be on for output 67 to be on. 03
(b) Draw a neat circuit diagram of PLC input module 04
(c) Explain in detail timing diagram and application of On delay timer 07

OR

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Q.3
(a) Make a ladder diagram for the following sequence: When SW1 is closed, CR1 goes on. After CR1 goes on, SW2 can turn CR2 on. When CR2 goes on, PL1 goes off. 03
(b) Draw a neat circuit diagram of PLC output module 04
(c) Explain in detail timing diagram and application of Off delay timer 07
Q.4
(a) Explain how JUMP instructions differs from the SKIP and MCR Functions. 03
(b) Explain up counter 04
(c) Write a ladder program to turn light on only if a PLC counter has a value of 45 or 78. 07

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OR

Q.4
(a) Write a Ladder program to convert any binary number to BCD. 03
(b) Explain down counter 04
(c) Write a ladder program to transfer data in 7 registers starting from IR0100 to other 7 holding register starting from HR0200. 07
Q.5
(a) Prepare ladder logic to implement AND, OR and NOT logic gates 03
(b) Describe various levels of industrial control 04
(c) Explain in detail application of sequencer function to control Dishwasher 07

OR

Q.5
(a) List out 3 languages in which PLC can be programmed. 03
(b) List 4 things which are done for preventive maintenance of PLC 04
(c) Draw and explain the block diagram of PID module and explain various PID tuning methods. 07

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This download link is referred from the post: GTU BE 2020 Summer Question Papers || Gujarat Technological University