VALLIAMMAI ENGINEERING COLLEGE SRM NAGAR KATTANKULATHUR DEPARTMENT OF MECHANICAL ENGINEERING ME2401 MECHATRONICS QUESTION BANK UNI T I MECHATRONI CS, SENSORS, TRANSDUSERSPART-A (2 MARKS) 1.Define mechatronics. List some of the application of Mechatronics? 2.What are the basic elements of a measurement system and sketch it block diagram? 3.What is a system? Give an example. 4.What is control system? 5.What are the terms that define the performance of the transducers? 6.Define static and dynamic characteristics? 7.How do you define sensor? 8.What is a displacement and position sensor? 9.Define LVDT? 10. Write about inductive proximity switch? 11. Write about Hall Effect sensors? 12. State the different between primary and secondary transducer? 13. What are the two basic forms of the control system? 14. What are the elements of the closed loop control systems? 15. What are the two types of feedback loop? 16. Write about the Mechatronics approach in micro-processor-controlled washing machine? 17. What is the larger scale application of Mechatronics? 18. What is hysteresis? 19. State the dynamic characteristic of simplified measuring system? 20. Distinguish between touch and practical sensor? PART-B (16 MARKS) 1.Identifythevariouselementsofaclosedloopsysteminautomaticwaterlevel controller and describe their functions. 2.Explain the static and dynamics characteristics of transducers. 3.Explain capacitive push-pull sensor and capacitive proximity sensor. 4.Explain the working principle of LVDT. 5.Explain the following Thermistor and Piezoelectric sensors. 6.Describe the rotary type potentiometer? 7.Describe the function of a bourdon tube pressure gauge in detail. 8.Writeadetailednoteonpressuremeasuringsystemsandpressuremeasuring transducer. 9.Explainindetailaboutthecharacteristicsoffluidflowandmeasurementoffluid velocity. 10. Explainthefollowingi)Thermoelectricii)Thermo-resistiveelement iii) Thermocouple. UNI T I I ACTUATI ON SYSTEMS PART-A (2 MARKS) 1.Classify actuator based on motion. 2.Mention the various components of a hydraulic system. 3.List down the components of pneumatic system. 4.State the purpose of providing air dryers. 5.State the function of a control valve. 6.List the features of synchronous motor. 7.Why sequential valves are necessary in pneumatic system? 8.What is meant by cylinder sequencing? 9.What is MOSFET? Stable its fractures? 10. State the objectives of DCVs? Classify them? 11. At what conditions SPDT, DPST a DPDT switches are used? 12. What are the factors to be considered for selecting solenoids? 13. Name three output characteristics of transistor configuration. 14. What are the types of field effect transistor? 15. List down the feature of JFET. 16. List down the features of synchronous motor. 17. Name three output characteristics of transistor configuration. 18. What is zener voltage? 19. What is the principle of relay? 20. What is a stepper motor? PART-B (16 MARKS) 1.Whatistheessentialdifferenceinconstructionbetweenapoppetvalveandspool valve?Stateonereasonwhypoppetvalvedesignismainlyconfinedtosmallair valves. 2.WhatistheprincipledifferenceinconstructionbetweenaVanepumpandaVane motor? 3.Describe various types of CAMS. 4.What is gear train? Explain each type briefly. 5.Comparechaindriveandbeltdriveandwhatarethefactorstobeconsideredin selection of belt drives. 6.Explain working principle of (a) Synchronous motor (b) AC servomotors. 7.Draw the electrical symbol for the following switching arrangements. a.DPST b.DPDT c.Triple pole, single throw 8.Describe a DIAC and TRIAC. 9.Explain principle of induction motor and list their advantages. 10. What are the major difference between JFET and the MOSFET? 3. SYSTEM MODELS AND CONTROLLERS PART-A (2 MARKS) 1.What are the basic building blocks of a mechanical system? 2.What are the various control modes in a mechatronics control? 3.What is a dashpot? 4.Define stiffness. 5.Give the characteristics of negative feedback system. 6.Definea.Hydraulic resistanceb, Hydraulic capacitancec. hydraulic inheritanced. pneumatic resistance e.pneumatic capacitancef. pneumatic inheritance g.lagh. steady state errori. combinational logic j.sequential logic 7.Derive the differential equation governing the mechanical system of an electric motor. 8.Write the analogous electrical elements in force voltage analogy for the elements of a mechanical translational system 9.Define gray code. 10. Define adaptive control. What are the various operations of an adaptive control system. 11. Features of an operational amplifier 12. What is MRAC? Mention the various steps used in MRAC. 13. Draw a PD controller using OPAMP. 14. What is a digital logic control? 15. Draw the torsional spring mass system. Write down the system equation 16. Differentiate PI control and PI controller. 17. Define embedded microprocessor. 18. Identify the electrical equivalent of the following a. fluid pressureb. springc.mass d. Damper 19. Draw the torsional spring mass system. Write the system equation. 20. What do u mean by discrete process controllers? PART-B (16 MARKS) 1.Explain the mathematical model of a vehicle moving on a road. 2.derive a mathematical model for a machine mounted on the ground to study the effects of ground disturbances on the machine bed displacement. 3.Derive a mathematical model for a resistor-inductor-capacitor system using kirchoffs law. 4.A motor is used to rotate a load. Derive a mathematical model and draw the mechanical model and equivalent model for the same. 5.Compare the control system performance for a system with proportionalcontrol and a system with integral control. 6.What are the limitations of a two step on-off control and in what situation is such a control system commonly used? 7.Describe in detail and compare the characteristics ofa.Proportional control b.PI control c.PID control. d.Derivative control 8.Explain in detail the adaptive control system 9.Explain digital logic control with a block diagram 10. Explain the building blocks for fluid and thermal systems. 4. PROGRAMMI NG LOGI C CONTROLLERS PART A (2 MARKS) 1.Define a PLC. Write short notes on basic arrangement of a PLC system 2.What is i/p and o/p processing? 3.Describe the elements of an I/O address. 4.Discuss PLC memory. 5.What are the advantages of PLC over a relay control system? 6.What is a status file? 7.What is meant by a latch? 8.What are counters? Write down the various types. 9.What is an ALU? State its function. 10. What is a program scan? 11. State the methods of i/po/p processing and explain briefly. 12. Draw the ladder diagram of NO and NC contacts. 13. Give the ladder diagram and truth table of AND gate. 14. What is a timer? Mention its types. 15. What is a retentive timer? 16. What is a cascade counter? 17. What are shift registers? Where are they used? 18. Compare RAM and ROM. 19. Give the function of A/D converter circuit used in analog input modules. 20. Draw the symbol and state the equivalent PLC instruction for each of the following. a.Normally open b.Normally closed. c.Relay o/p d.Timer e.Counter. PART B (16 MARKS) 1.Write short notes on Programmable Controllers. 2.ExplainthebasicstructuresofPLC.Explainindetailabouttheprogrammingofa PLC. What are the advantages of PLC? 3.Explain in detail about the Input/Output Modules. 4.Explain in detail about the ladder diagram of a PLC. 5.Explain in detail about the Relay logic. 6.What is a timer? Explain its types with diagrams. 7.What are counters? Explain the different types of counters. 8.Explain in detail about data handling and data manipulation. 9.Explain the factors considered for the selection of a PLC? 10. Explain the application of a PLC with any two applications. 5 DESI GN OF MECHATRONI CS SYSTEMPART A (2 MARKS) 1.Name the various stages in designing a mechatronics system 2.List the seven modules of mechatronics approach. 3.Distinguish between traditional and mechatronics system. 4.What are the requirements satisfied before starting a timer? 5.What is a timed switch? 6.What is a duty cycle 7.What is a wind screen viper? 8.What are the configurations of operating a stepper motor? 9.What are the various movements of robots? 10. Identify the role of opto-isolator in robot control. 11. How the traditional design of temperature control of domestic central heating system improved by a mechatronics design? 12. Identify the main sensors used in domestic washing machine. 13. Automatic camera is a mechatronics system. Justify. 14. What are the advantages of using a microprocessor in the place of a mechanical controller fora carburettor of an automobile? 15. Compare and contrast the traditional and mechatronics approach applicable for online inspection. 16. What do you mean by embedded systems? 17. What is an engine management system? 18. Name the sensors used in a car engine management system. 19. How a traditional design of pressure control in a large tank is improved by mechatronics system? 20. Suggest a simple mechatronics design for the flow control in a large pipe. PART B (16 MARKS) 1.Explain the possible mechatronics design process stages. 2.Compare and contrast mechatronics approach with traditional approach. Give suitable examples. 3.Explain the possible design solutions for timed switches 4.Explain the construction of a pick and place robot and explain the various mechatronics system in the design. 5.Explain the mechatronics design of an automatic car park system. 6.Design a mechatronics system for an automatic camera and explain the various mechatronics elements. 7.Discuss the mechatronics elements in a wireless surveillance balloon. 8.Explain the possible ways of implementing wind screen wiper motion. 9.Explain the various elements to design an automated guided vehicle. 10. Draw and explain Don code reader.