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Analytical Instrumentation MCQ Question Set 26

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1. Why feedback in accelerometer systems are applied to?




2. Which of the following is measured in open loop accelerometer system?




3. PMMC system is used for providing _____




4. Internal torque of the coil, while operation is _______




5. Feedback torque developed due to the application of LVDT will be _______




6. Under steady state conditions, inertial torque will be ______ to output current (Io).




7. The whole feedback accelerometer system will be _________




8. Which of the following methods are employed for improving the gain of amplifier?




9. System is much unstable at _____




10. Which of the following will function as an integrator of input voltage?




11. Which of the following are not suitable with electromagnetic flow meter?




12. Output signal of electromagnetic flow meter inversely proportional to ________




13. Frequency of AC electromagnets are independent of magnetic flux density.




14. Feedback system in electromagnetic flow meter is applied to ______




15. Feedback system draws current from the main circuit.




16. Servo operated electromagnetic flow meter is _______




17. Electromagnetic flow meter is based on ________




18. Which for the following represents condition for maximum emf?




19. Which of the following device is used for measuring emf between electrodes?




20. Which of the following factors electromagnetic flow meters are sensitive to?




21. AM signals are the _____ of data signal and carrier signal.




22. Which of the following can produce an AM signal?




23. Balanced and double balanced modulators produce ________




24. FM generators for communication has frequency _______




25. Power level of FM signal in space telemetry and entertainment system are equal.




26. Indirect FM generators uses ______




27. Amstrong modulator is _________




28. Modulation index is the product of Δfc and fm.




29. Modulation index for music broadcasting ___________ with increasing frequency.




30. Tank circuit contains ________




31. Demodulation is the process of _______




32. Discriminators are also known as _______




33. Which of the following act as a slope detector?




34. Which of the following circuit limit amplitude in FM signal?




35. Single tuned circuit is used for _______




36. Foster-seely detector is _____




37. Foster-seely detector is used for carrier frequency________




38. PLL stands for _______




39. PLL is a _______




40. Phase sensitive detector is used as ______




41. Sampling is the process of conversion of _________




42. Which of the following represents the sampling frequency of signal frequency 50Hz?




43. Which of the following application gating circuit used for?




44. Gate is equivalent to _____




45. Which of the following can perform as gating circuit?




46. Which of the following forms HOLD circuit?




47. Which of the following represents the charging time of capacitor to maximum input value?




48. Aperture time, holding time and acquisition time are equal in magnitude.




49. During sampling hold capacitor is isolated.




50. Which of the following device is used for a sample circuit?