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Measurement and Instrumentation MCQ Set 2

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1. A moving-coil permanent-magnet instrument can be used as ________ by using a low resistance shunt.




2. ______ is an instrument which measures the insulation resistance of an electric circuit relative to earth and one another,




3. An induction wattmeter can be used for




4. Murray loop test can be used for location of




5. In an A.C. coordinate potentiometer, the currents in the phase and quadrature potentiometer are adjusted to be




6. For measuring a very high resistance we should use




7. The function of shunt in an ammeter is to




8. Which of the following is an essential part of a motor meter?




9. _______ instruments are those which measure the total quantity of electricity delivered in a particular time.




10. In a low power factor wattmeter the pressure coil is connected




11. A direct current can be measured by




12. If the current in a capacitor leads the voltage by 80°, the loss angle of the capacitor is




13. Commonly used standard capacitor is




14. Most sensitive galvanometer is




15. Which of the following is measured by using a vector voltmeter?




16. Damping of the Ballistic galvanometer is made small to




17. In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of




18. Basically a potentiometer is a device for




19. For measuring current at high frequency we should use




20. A ________ device prevents the oscillation of the moving system and enables the latter to reach its final position quickly




21. A potentiometer may be used for




22. The electrical power to a Meggar is provided by




23. To avoid the effect of stray magnetic field in A.C. bridges we can use




24. Volt box is a component to




25. Two holes in the disc of energy meter are drilled at the opposite sides of the spindle to




26. Which of the following instruments indicate the instantaneous value of the electrical quantity being measured at the time at which it is being measured?




27. The pointer of an indicating instrument should be




28. A phase shifting transformer is used in conjunction with




29. The desirable static characteristics of a measuring system are




30. In an Anderson bridge, the unknown inductance is measured in terms of




31. The resistance in the circuit of the moving coil of a dynamometer wattmeter should be




32. Which of the following devices may be used for extending the range of instruments?




33. Which of the following essential features is possessed by an indicating instrument? (A)




34. In a Meggar controlling torque is provided by (A)




35. The ratio of maximum displacement deviation to full scale deviation of the instrument is called




36. Various adjustments in an energy meter include




37. E.m.f. of a Weston cell is accurately measured by




38. An ammeter is a




39. The stator of phase shifting transformer for use in conjunction with an A.C. potentiometer usually has a




40. According to application, instruments are classified as




41. The switch board instruments




42. In a Schering bridge the potential of the detector above earth potential is




43. A multi-range instrument has




44. In a low power factor wattmeter the compensating coil is connected




45. A moving-coil permanent-magnet instrument can be used as flux-meter




46. Which of the following are integrating instruments?




47. A Weston synchronoscope is a




48. Wattmeter cannot be designed on the principle of




49. Which of the following meters are not used on D.C. circuits?




50. . If an inductance is connected in one arm of bridge and resistances in the remaining three arms




51. Which of the following properties a damping oil must possess?




52. In a portable instrument, the controlling torque is provided by




53. The adjustment of position of shading bands, in an energy meter is done to provide




54. For measurement of inductance having high value, we should use