Subject 2018 Question Paper — Government College of Engineering and T…
The 2018 Subject previous year question paper (Government College of Engineering and Technology, Jammu), with every question and its marks.
- University: Government College of Engineering and Technology, Jammu
- Course: Integrated Circuits & Instrumentation
- Branch: Electronics & Communication Engineering
- Year: 2018
- Paper: end-term
- Duration: 180 minutes
- Total marks: 100
Instructions
- Attempt five questions in all selecting at least two questions from each Section. Each question carries 20 marks.
Questions
Section - A
- Q1. (a) Draw the block diagram of internal construction of an op-amp and explain the functions of each block in detail. (b) Draw and explain three open-loop op-amp configurations. (c) Define the terms: input offset voltage, input offset current, CMRR, large signal voltage gain and slew rate. [20 marks]
- Q2. (a) Explain the working of op-amp inverting amplifier. Derive the expression for its voltage gain, input resistance and output resistance. (b) Explain the working of a subtractor and a summing amplifier using a basic differential op-amp configuration. [20 marks]
- Q3. (a) Explain an instrumentation amplifier circuit and discuss its applications. (b) Explain the operation of Schmitt trigger circuit and discuss its importance. [20 marks]
- Q4. (a) Discuss the operation of a basic comparator circuit and draw is input-output waveforms when used as a non-inverting comparators. (b) Explain the operation of the 555 timer as an astable multivibrator. Discuss its applications. [20 marks]
Section - B
- Q5. (a) Explain the working of Deflection type and Null type of instruments by giving suitable examples. (b) Explain the different functions and applications of measurement systems. [20 marks]
- Q6. (a) List three main functional elements of a measurement system. Explain the elements of a measurement system by taking an example. (b) Explain the advantages of digital indicating instruments over their analog counterparts. Explain the following terms as applied to digital displays: (i) Resolution (ii) Difference between 3 ½ digit and 4 digit displays (iii) Sensitivity of digital meters (iv) Accuracy specifications of digital meters [20 marks]
- Q7. (a) Define piezo - electric effect with a neat sketch explain the operation of piezo-electric transducer in detail. (b) Explain the principle of working and constructional details of a photo - voltaic cell. Explain why is it very useful for space applications. [20 marks]
- Q8. (a) Describe the operation of the Wheatstone bridge and device the expression for DC resistance. (b) Describe the working of Hay's bridge for measurement of inductance. Derive the equations for balance and draw the phasor diagram under conditions of balance. [20 marks]