GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VI (NEW) EXAMINATION - WINTER 2018
--- Content provided by FirstRanker.com ---
Subject Code:2161709 Date:30/11/2018
Subject Name:Programmable Logic Controller
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
--- Content provided by FirstRanker.com ---
| Q.1 | (a) | List the benefits offer by PLC. Explain at least four in brief. | 03 |
|---|---|---|---|
| (b) | Why programming tools are essential part with PLC operation? How it differ from Personal Computer as programming tool? Explain it technically. | 04 | |
| (c) | List the input field and output field device and draw its equivalent ladder Symbols. | 07 | |
| Q2 | (a) | Explain differences between fixed I/O’s and modular I/O’s. | 03 |
| (b) | What is the advantages offer by HMI? Explain it in details | 04 | |
| (c) | Develop Ladder logic diagram for each of the following Boolean expressions using AND, OR, and NOT gates: (a) Y= ABC+D (b) Y=A+B+CD --- Content provided by FirstRanker.com --- (c) Y=(A+B)(C+D) | 07 | |
| OR | |||
| (a) | Draw and describe Input Image Table and Output Image table. | 07 | |
| Q3 | (a) | How will High Speed Counter module works? Describe with Suitable Application | 03 |
| (b) | Describe with neat sketch and operation with PLC (1) Proximity Sensor (2) Magnetic Reed Relay: | 04 | |
| (c) | Prepare Ladder Logic Diagram (LLD) for following process control. Fill tank (T) fully by opening inlet solenoid valve SV-1. When it full, open outlet valve SV-2 for 5 sec. Either open SV-1 for 10 sec or till the tank is full which will occur first than open SV2 again. Repeat it continuously. | 07 | |
| OR | |||
| (a) | Why Latch and Unlatch Instruction required in PLC Programming? How it is close to retentive timer operation. | 03 | |
| (b) | Draw and describe ON Timer delay instruction with suitable example | 04 | |
| (c) | Prepare LLD to count how many persons attend reception in dining hall? Use counter at entry as well as at exit. | 07 | |
| Q4 | (a) | Explain for ADD, SUB, MUL and DIV instruction. | 03 |
| (b) | Draw and design LLD to generate wave from with 40% duty cycle at digital output terminal when toggle switch is ON. Take output frequency generated by assigning TIMER as 5 sec On time and 3 sec OFF timer | 04 | |
| (c) | Prepare LLD to Turn-On Lamp-1 for 5 sec, Lamp-2 for 10 sec, Lamp-3 for 15 sec and Lamp-4 for 20 sec sequentially ( At a time only one lamp will be ON). Repeat it continuously. | 07 | |
| OR | |||
| (a) | Why tuning is required in PID Module? Describe PID module along with technical reason. | 03 | |
| (b) | Justify the need of Interrupt in PLC operation. Describe following instruction 1 ENI 2. RETI 3. DTCH 4. CLR EVNT | 04 | |
| (c) | Develop LLD an alarm annunciator system. Switch OFF the lamp when 120 sec passed without any acknowledgement. | 07 | |
| Q5 | (a) | How will you implements communication network for PLC? Explain with industrial communication. | 03 |
| (b) | Draw and illustrate twin axis Robot with PLC sequencer control | 04 | |
| (c) | Prepare LLD for following Level Control System. --- Content provided by FirstRanker.com --- Be sure motor star when Low Level switch is OFF(Open) and Overhead tank High switch is Open ( OFF). | 07 | |
| OR | |||
| (a) | Enlist data handling Function. Describe for data move and rotate instructions. | 03 | |
| (b) | Describe with ladder diagram, Structured Text Function block diagram Instruction list sequential function chart type PLC Languages | 04 | |
| (c) | Prepare LLD for Batch process control --- Content provided by FirstRanker.com --- 1. Open SV-1 to fill fluid in the tank till level switch will be ON. Otherwise OFF.2.Be sure once level achieved, SV-2 will open, 3. Motor will be started, Wait till temperature achieved. 4. Stop motor. OFF SV-2 5. ON SV-3 for 10 sec --- Content provided by FirstRanker.com --- 5. Repeat from step 1 .Be sure once SV-2 | 07 |
--- Content provided by FirstRanker.com ---
This download link is referred from the post: GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University