Maharashtra State Board of Technical Education 2008 Diploma Electrical and Electronics Industrial Automation - Question Paper

SAMPLE ques. PAPER
Course Name : Electrical Engineering Group
Course Code : EE/EP
Semester : Fifth
Subject : Industrial Automation
Marks : 80 Time: three Hrs.

Instructions:
1. All ques. are compulsory.
2. Illustrate your answers with neat sketches wherever necessary.
3. Figures to the right indicate full marks.
4. presume suitable data if necessary.
5. Preferably, write the answers in sequential order.

Q.1 Attempt any FOUR. [Marks:16]
1. Differentiate ranging from open loop & closed loop control system on:-
Applications, effect of o/p, response time, sensitivity to parameter modifications.
2. Draw symbols of any 4 elements every in power circuit & control circuit.
3. discuss constructional features of AC Servomotor.
4. What is PLC? List any 4 major brands of PLC.
5. Draw and discuss Ladder logic for a forward-reverse control of a motor.
6. What is SCADA? How it is useful as a control system?

Q.2 Attempt any THREE. [Marks:12]
1. Draw & discuss every block of Temperature control system for a furnace.
2. discuss the use of contactor in control system.
3. Draw power circuit & control circuit for a slip ring Induction motor.
4. State different functions of CPU in PLC.

Q.3 Attempt any THREE. [Marks:12]
1. With neat sketch discuss the working of Synchro Transmitter.
2. How Microprocessor will work as a control system?
3. Draw an Electronic PID controller & Derive its Transfer function.
4. With neat sketch discuss the Input module /Output module interface of a PLC.

Q.4 Attempt any TWO. [Marks:16]
1. discuss with neat sketch working of AC position control system.
2. Differentiate ranging from pneumatic & hydraulic controller.
3. How control of Drilling machine is achieved with the help of PLC?
discuss with necessary logic.

Q.5 Attempt any TWO. [Marks:12]
1. List various switches used in control system & State 1 application of every.
2. How potentiometer can be used as an fault detector?
3. State different control actions and provide I/O relation in every case.

Q.6 Attempt any TWO. [Marks:12]
1. discuss with neat sketch working of Pneumatic Relay.
2. How gain, reset & rate of a controller are adjusted.
3. List advantages and disadvantages of PLC over PC.

Earning:   Approval pending.