Site icon

Basic Electronics Instrumentation Important Questions – Past Papers

Paper 1: Basic Electronics Instrumentation – University Past Papers.

Time Allowed: 3 hours

Total Marks:    70, Passing Marks (35)

NOTE: Attempt any five questions from the following. All questions carry equal marks. Cell Phones and other electronic gadgets are not allowed in the examination hall.

Q.1 a) The series ohmmeter in given figure is made up of a 1.5V battery, a 100 microamperes meter and a resistance R1 which makes ( R1 + Rm ) = 15 kilo-ohm. Determine the instrument indication when Rx = 0
b) Determine how the resistance scale should be marked at 0.5 Full scale deflections, 0.75 FSD.

b) Discuss the internal circuit of DC voltmeter

Q.2 a) Draw the circuit diagram of a basic two transistor flip flop. Explain the conditions that keep one transistor ON and the other one OFF.
b) Draw the logic diagram for a general ADC.

Q.3 a) Draw the basic block diagram of a digital frequency meter, sketch the system waveforms, and carefully explain its operation.
b) A 20V dc voltage is measured by analog and digital multi-meters. The analog instrument is on its 25 V range, and its specified accuracy is 2% the digital meter has a 3.5 digital display and an accuracy of (0.6+1). Determine the measurement accuracy in each case.

Q.4 Discuss the electronic meters for measurement of very high and very low resistances

Q.5 a) Sketch RL series and parallel equivalent circuits for an inductor.
b) When the given circuit is in resonance. E=100 mV, R = 5 Ohms and XL= Xc= 100 Ohms. Calculate the Q factor.

Q.6 Draw the block diagram for a digital spectrum analyzer. Explain its operation

Q.7 Explain the basic operation of a digital storage oscilloscope, and discuss the relationship between sampling rate and bandwidth.

Q.8 Write note on any TWO of the following:
a) Thermocouple instruments
b) Unregulated DC power supply
c) Low frequency signal generator

Electrical Engineering Past Papers and Guess(EE)

  1. Calculus & analytic geometry past papers
  2. Introduction to computing past papers
  3. Electricity and magnetism past papers
  5. Programming Fundamentals Past Papers
  6. Electronic devices and circuits
  7. Digital Logic Design DLD Past Papers
  8. Basic Electronics & DLD Past Papers
  9. Functional English Past Papers
  10. Differential Equations Past Papers
  11. Data Structures Past Papers
  12. Electric Machines Past Papers 
  13. Network Analysis Past Papers
  14. Numerical Analysis Past Papers
  15. Signals Systems Past Papers
  16. complex variables and transform past papers
  17. Engineering drawing and AutoCAD past papers
  18. Applied Thermodynamics Past Papers
  19. Communication and presentation skills Past Papers
  20. Field Theory Past Papers
  21. Communication Systems Past Papers
  22. Embedded Systems Past Papers
  23. Basic Electronics Instrumentation Past Papers
  24. Power Transmission Distribution Past Papers
  25. Linear control systems Past Papers
  26. Probability Methods in Engineering Past Papers
  27. Engineering Economics Past Papers
  28. Technical Report Writing Past Papers
  29. Professional Ethics Past Papers
Exit mobile version