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Analytical Instrumentation MCQ Question Set 25

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1. Pressure can be directly measured from load cell.




2. Which of the following can be measured using a load cell?




3. Which of the following represent the temperature at which atmosphere moisture can saturate?




4. CRO can be considered as an inverse transducer.




5. Closed-loop system are also known as manual control system.




6. Which of the following lead to instability?




7. Which of the following is the application of a positive feedback system?




8. Which of the following is the application of a negative feedback system?




9. For a good control system bandwidth should be ______




10. Time taken by a system to achieve stable state is _________




11. Electric hand drier is an example of ______




12. Automatic washing machine is ______




13. Which of the following can be a source of supply in dc power supplies?




14. Which of the application’s filters used for?




15. Which of the following represent a change of output voltage when load current is increased?




16. Which of the following generate output voltage much closer to true value?




17. Why zener diodes are provided in dc supply?




18. Stability of output voltage is entirely depended on _________




19. For excellent stability, the zener diode is kept in temperature controlled casket.




20. For instrumentation system, precision variable voltage-reference system is necessary.




21. Which of the following can be used as a comparator?




22. Which of the following are not the standard value of Zener diodes?




23. Which of the following signals are generated by Wien-bridge oscillators?




24. In a Wien-bridge oscillator for obtaining 160Hz frequency output what will be the capacitor value if resistance is selected as 1KΩ?




25. In a Wien-bridge oscillator, frequency of oscillation and capacitor value have ______




26. Which of the following device is a non-linear device?




27. In RC phase shift oscillator, one R-C bridge provides ___________ phase shift.




28. Which of the following oscillators have higher stability at a higher frequency?




29. Which of the following can be considered as oscillation frequency controlling element in RC phase shift oscillator?




30. Which of the following represents the LC tuned circuit?




31. Which of the following can be used to produce a square waveform?




32. Pulse wave and square wave are the same in all aspect.




33. Which of the following represents the radio frequency range?




34. Which of the following represents RF?




35. High frequency amplifier in FM telemetry have _____




36. Cathode ray oscilloscope uses ________




37. Ideal op-amp have _______________ input impedance.




38. Gain of wide band amplifiers are ________




39. Ideal op-amp have equal input impedance and output impedance values.




40. Wide band amplifiers are most commonly ______




41. Which of the following can be used as an amplifier?




42. Which of the following op-amp configurations are not possible?




43. Which of the following device is similar to analog comparator?




44. Which of the following can act as a comparator?




45. Zero crossing detector has ____________ as reference voltage.




46. Which of the following detect the presence of a voltage between two voltages?




47. Which of the following are used in window comparators?




48. Schmitt trigger is a sine wave generator.




49. Difference between levels on input that causes transition in Schmitt trigger is ____




50. Threshold voltage for switching in Schmitt trigger is determined by _______