GTU BE 7th Semester 171702 Programmable Automation Controller Summer 2018 Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE – SEMESTER?VII ? EXAMINATION ? SUMMER 2018
Subject Code: 171702 Date: 01-05-2018
Subject Name: Programmable Automation Controller
Time: 02:30 pm to 05:00 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) Discuss advantages and disadvantages of PLC. 07
(b) List analog input-output devices interfaced with PLC and explain any one in
detail.
07
Q.2 (a) List out rules of proper construction of ladder diagram with suitable example. 07
(b) Explain scan cycle of PLC. 07
OR
(b) Draw the ladder diagram for AND, NOR and EX-OR gate. 07

Q.3 (a) Develop a ladder diagram for F(a,b,c,d) =? (1,2,4,6,9,10,11) 07
(b) Explain On delay Timer (Ton) with timing diagram. 07
OR
Q.3 (a) Explain counter instruction of PLC with suitable example. 07
(b) Discuss input, output and holding registers of PLC 07

Q.4 (a) Explain arithmetical functions of PLC with suitable example. 07
(b) Discuss Jump instruction of PLC with its application. 07
OR
Q.4 (a) Discuss PLC FIFO and LIFO function. 07
(b) Explain TABLE TO REGISTER and REGISTER TO TABLE function of PLC. 07

Q.5 (a) List out factors to be considered in selecting PLC. 07
(b) Write a short note on Troubleshooting of PLC. 07
OR
Q.5 (a) Explain PLC sequencer functions with example. 07
(b) Explain PLC register shift functions. 07
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