University : Karnataka State Open University
Degree : M.Tech
Year : II
Semester : 4th Sem
Stream : Electrical
Subject : Control & Instrumentation Engineering
Document type : Model Question Paper
Website : ksoukarnataka.com
Download Model/ Sample Question Papers :
Electronic Instrumentation : https://www.pdfquestion.in/uploads/6135-INSTRUMENTSSYSTEM.docx
Digital Control : https://www.pdfquestion.in/uploads/6135-DIGITALMETHODS.docx
Industrial Instrumentation : https://www.pdfquestion.in/uploads/6135-INDUSTRIALCONTROL.docx
Control & Instrumentation Engineering Question Paper :
M.Tech : IV Semester
SPE : (Control And Instrumentation Engineering)
Electronic Instruments And System :
Related : Karnataka State Open University M.Tech Power System Control Model Question Paper : www.pdfquestion.in/6139.html
Time : 3 Hours
Max. Marks : 75
Instructions :
** Question paper is divided into three groups.
** Each group is of 25 marks.
** Figure to the right in bracket indicates mark.
** Assume suitable data if necessary.
Group A : Answer Any Three questions. (Question No. 1 is compulsory)
Q.1 Why is temperature control necessary in soldering process? (05)
Q.2 Explain the following troubleshooting techniques with examples.
i) Isolation technique and
ii) Split –half method (10)
Q.3 What are the methods of identifying faults and the stages. (10)
Q.4 Write down the soldering procedure. (10)
Q.5 What are the factors on which capacitance depends. (10)
Group B : Answer any three questions. (Question No. 6 is compulsory)
Q.6 Write a note on maintenance logbook. Explain its importance. (05)
Q.7 Explain with an example why is it necessary to determine cause of the fault detected. (10)
Q.8 Explain the principle of a frequency counter and explain how it is used for measurement of frequency and time period? (10)
Q.9 Explain the principle of operation of a Cathode Ray Oscilloscope. (10) Differentiate between the duel trace and duel beam oscilloscope
Q.10. Explain the principle of PMMC multimeter. (10)
Group C : All Questions are Compulsory.
Q.11 Fill in the blanks (Each question carries 2 marks)
(i) The bridge used for precision measurement of capacitance _________.
(ii) Typical failure rate of a good solder joint is ___________ FIT.
(iii) In an ideal op-amp, the open loop gain is ___________.
(iv) Inverting terminal is marked with minus sign. A high negative signal at it will make the output stuck at _________.
(v) Typical voltage across a LED is ____________.
Q.12 Multiple choice question. (Each question carries 2 marks)
(i) Noise margin in TTL gates is __________Volt.
(a) 0.4
(b) 0.8
(c) 1
(d) 5
(ii) Drying of clothes takes place in spinning drum by using the principle of __________.
(a) Gravity
(b) Centrifugal force
(c) Evaporation
(d) None of them
(iii) The instrument used for measuring insulation between the core and the shield in a coaxial lead is
(a) Multimeter
(b) Electronic voltmeter
(c) Sensitive ammeter
(d) Megger
(iv) The highest speed and lowest dissipation are attributed to the logic families
(a) CMOS
(b) TTL
(c) ECL
(d) Both (a) and (c)
(v) Which type of FET does not draw any current when gate voltage is zero or less
(a) JFET
(b) DMOSFET
(c) EMOSFET
(d) No type
Q.13 True or false : (Each question carries 1 marks)
(i) Time constant of a RC circuit is always RC second.
(ii) Loading effect of a meter is the highest in the highest voltage range.
(iii) DC voltage can be connected to an electrolytic capacitor in any way.
(iv) In a low power FET, resistance between drain and gate, or gate and source are equal.
(v) Although gain of an OP-amp in very high, it disegiminates between the interference signal and the derived signal.
Digital Control And State Variable Methods :
Group A : Answer any three questions. (Question No. 1 is compulsory)
Q.1 A unity feedback system has the forward path transfer function, The reference input is a unit – step function, and the system is at rest initially. (i) Taking k as constant, determine the value of which minimizes the integral square error. (05)
Q.2 Write a note on Analog PID controllers. (10)
Q.3 Explain the principle of the Tachogenerator with suitable diagram. (10)
Q.4 Explain the following Z-plane specifications of control system design. (10)
(a) Stability (b) Disturbance rejection (c)Insensitivity and Robustness
Q.5 State the various steps for parameter optimization Explain Quadratic Performance Index. Explain how the system error is being affected by Adjusting the weighting factor. (10)
Group B : Answer any three questions. (Question No. 6 is compulsory)
Q.6 Explain Torque-Speed curves of a stepping motor. (05)
Q.7 Using Laplace transition method. Find the matrix exponential ef for, (a) (b) (10)
Q.8 Draw and explain the unit-step response of a digital control system. (10)
Q.9 What are the terms for definiteness? (10)
Q.10 List different properties that describe the performance of a feedback control system and explain steady state accuracy in detail. (10)
Group C : All Questions are Compulsory.
Q.11 Fill in the blanks (Each question carries 2 marks)
(i) An important aspect of the feedback system design is the __________ of the control system.
(ii) The (input-output) feedback linearization is used for _________ system.
(iii) The transfer function based methods have been referred to as ___________.
(iv) The (input-output) feedback linearization is used for _________ system.
(v) The law governing corrective action of the controller is called the ______________.