Janardan Rai Nagar Rajasthan Vidyapeeth 2007 Diploma Automobile Engineering INSTRUMENTATION & CONTROL - Question Paper

Model Question Paper

DTA7/DTM7- INSTRUMENTATION & CONTROL

Duration : 3 Hrs. Maximum Marks : 75

 

Instruction:

1. Question paper is divided into Group A, Group B and Group C

2. Each Group is of 25 Marks

3. Figure to the right in bracket indicate marks.

4. Good Handwriting is expected

 

Group A (25 Marks)

 

Answer any three questions (Question 1 is compulsory)

	(5)

 

Q1. Describe generalized form of Instrumentation System.

(10)

(10)

Q2. How pressure is converted in electrical quantity? Explain Bimetallic Thermometer.

Q3. Draw a neat diagram of a typical servo system and explain the function of each block diagram.

Q4. Explain multichannel system. What is TDM & FDM? Discuss data logger.

(10)

Q5. Explain digital controller, discuss working of digital controller of state merits of digital controller.

 

Group B (25 Marks)

 

Answer any three questions (Questions 6 is compulsory)

	(5)

 

Q6. What are programmable controllers? How can they be applied to machines?

(10)

Q7. Discuss microprocessor system with detail block diagram.

(10)

Q8. What is techogenerator? Give the difference between A.C techometer and D.C tachometer. Find out transfer function of techogenerator.

(10)

Q9. Explain construction of LED and LCD in detail.

(10)

Q10. What is the function of tranducer? Explain the principal of working of LVDT

 

Group C (25 Marks)

 

All Questions are Compulsory.

 

Q.11. Fill in the blanks (Each question carries 2 Marks, Total = 10 Marks)

 

(i) Due to unshielded wires _________ capacitance is created.

(ii) _____________ are self generating devices, operating under energy conversion principle.

(iii) Thermistors are __________ resistance temperature transducers.

(iv) In a power supply__________is used to increase or decrease a c supply.

(v) IC 741 is ____________.

 

Q.12. Multiple choice questions (Each question carries 2 marks, Total = 10 marks)

(i) Micro process is________ device.

(a) Programme (b) Electrical

(c) Memory

 

 

(ii) _________ motor actuates a train of step angular or linear movement in response to a train of input pulses on one to one basis.

(a) Stepper (b) Servo

(c) Electric

 

(iii) Techometer is used to measure________.

(a) Speed (b) Temperature

(c) None of these

 

(iv) Oscilloscope is used to measure___________.

(a) Frequency (b) Temperature

(c) None of these

 

(v) Nixie tube is _________ display.

(a) Gaseous (b) Liquid

(c) Crystal

Q.13. Indicate whether following statements are True or False (Each question carries 1 marks, Total = 5 Marks)

 

(i) Bridge rectifier is used to convert ac to Dc.

(ii) In Op-AMP feedback reduces noise

(iii) Galvanometer is used to measure current.

(iv) Zcncor diode is a semiconductor stabilizing device.

(v)      Integrator uses capacitor as a feed back path.

 

 

 

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