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Analytical Instrumentation MCQ Question Set 15

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1. The 100 kHz oscillator acts as which of the following?




2. Which of the following removes residual harmonics from the phase-detected signal?




3. The oscilloscope is used to display the klystron mode.




4. In the sample cell, which of the following is selected to give maximum optical transmission in the UV-visible region?




5. In analytical instrumentation, little circuitry is concerned with the amplification and processing of signals.




6. Which of the following samples the analog signals to obtain their digital equivalent?




7. Which of the following can be used to store information?




8. Which of the following is known as a nibble?




9. Which of the following is the binary equivalent of the decimal number 10?




10. 1001 is a data presented on a set of binary coded decimal output lines. What would be the decimal equivalent of this number in the case of negative logic?




11. Two switches are in parallel and are connected with a lamp and supply in series. This represents which of the following logic gate?




12. The output will be logic ‘1’ only if all the inputs are ‘0’. Which gate must be used to execute this condition?




13. INHIBIT gate is ________ gate with an inhibiting input.




14. Which of the following is the most widely employed logic family?




15. The basic function of TTL gate is which of the following functions?




16. In TTL logic, the input transistor has a number of ________ equal to the desired fan-in of the circuit.




17. Which of the following is the propagation delay of TTL circuits?




18. The standard TTL gates are marketed as _______ series.




19. Schottky TTL logic family does not have which of the following features?




20. The logic ‘0’ of ECL is represented as ______V and logic ‘1’ is represented as ______V.




21. ECL is a way of achieving a higher speed of gate.




22. Which of the following is not the advantage of MOS gates?




23. CMOS gates are commercially available as which of the following series?




24. The switching of MOS gates can be improved by using CMOS.




25. Science of precise and accurate measurement of various physical quantities is termed as ______




26. In a measuring system quantity under measurement is termed as ______




27. In a measurement, what is the term used to specify the closeness of two or more measurements?




28. Accuracy and Precision are dependent on each other.




29. During a measurement, for a measure value “B”, absolute error is obtained as “A”, what will be the relative error of measurement?




30. In a measuring system what is the term used to specify a difference between higher and lower calibration values?




31. Using a voltmeter measured value is 24.3V, while its true value is 24V. What is the relative error of measurement?




32. _______ is used to prevent oscillation in moving system.




33. What is the span of an ammeter with range -30 to +30A?




34. Given a DC voltmeter has a sensitivity of 500ohm/V. For a full scale reading in 100V range, what will be the current through voltmeter?




35. What will be the sensitivity of a voltmeter for 0 to 50mA meter movement?




36. Using an instrument for measuring capacitance gives an output 203.5nF whereas true value is 203.9nF. What will be the static correction of the instrument?




37. What is the relation between scale factor and sensitivity of a transducer?




38. Which of the following is an analog transducer?




39. What is the principle of operation of LVDT?




40. Which of the following can be measured using Piezo-electric transducer?




41. Capacitive transducer is used for?




42. Which of the following is used in photo conductive cell?




43. Closeness of measured value to true value is ________




44. ________ of a measuring system refers to its ability to follow instant by instant the measurand with time.




45. For a measuring system, dynamic sensitivity is required to be ________ of static sensitivity.




46. What is the span of an instrument, operating under a bias which read a value from 230V to 450V only?




47. What will be the ratio of amplitudes of largest (maximum) signal to smallest (minimum) signal to which the system is subjected?




48. For a Measurement, indicated value is 225V while true value if 226V. What will be the static error of an instrument?




49. What is the relation between static error and static correction?




50. What is the term used to express the ability of a measuring system to maintain its standard performance?