Electrical Instruments & Measurements MCQs – DAE Electrical Engineering

50 Score: 0 Attempted: 0/50
1. The instrument used to measure current is called a:



2. The unit of resistance is:



3. A voltmeter is always connected:



4. A galvanometer is a device used to detect:



5. The sensitivity of a galvanometer is increased by:



6. Which instrument measures power in an electrical circuit?



7. The moving coil instrument can measure:



8. The moving iron instrument can measure:



9. The torque that moves the pointer of an analog instrument is called:



10. The controlling torque in a PMMC instrument is provided by:



11. The damping torque in an instrument helps to:



12. The instrument used to measure electrical energy is:



13. In a wattmeter, the current coil is connected in:



14. The voltage coil of a wattmeter is connected in:



15. The basic principle of operation of an ammeter is:



16. The range of an ammeter can be extended using:



17. The range of a voltmeter can be extended by using:



18. The internal resistance of an ammeter is:



19. The internal resistance of a voltmeter is:



20. A megger is used to measure:



21. Ohm’s law states that:



22. A wattmeter measures:



23. The working principle of an energy meter is based on:



24. The unit of energy is:



25. The instrument which measures the phase difference between voltage and current is:



26. The standard resistor is used for:



27. A thermocouple measures:



28. The instrument used to display waveform of voltage is:



29. The frequency of an AC signal is measured using:



30. In a dynamometer type wattmeter, both coils are:



31. The ratio of deflecting torque to controlling torque is proportional to:



32. An ohmmeter measures:



33. A digital multimeter can measure:



34. The instrument used for calibration of AC instruments is:



35. The deflection of the pointer in an instrument is proportional to:



36. The damping provided by air friction is used in:



37. A hot-wire ammeter works on the principle of:



38. A dynamometer type wattmeter can measure:



39. The permanent magnet moving coil (PMMC) instrument uses:



40. A Weston type frequency meter is based on:



41. A synchroscope is used to:



42. The main error in PMMC instruments is due to:



43. The scale of PMMC instrument is:



44. The scale of moving iron instrument is:



45. The torque in an induction-type energy meter is proportional to:



46. The working principle of a potentiometer is based on:



47. The zero adjustment of analog instruments is done by:



48. A ballistic galvanometer measures:



49. The instrument which measures reactive power in AC circuit is:



50. In an energy meter, the rotating aluminum disc rotates due to:



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