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Chapter 8 Electronics Instruments MCQs

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1. It is called third eye of electronics engineer





2. Oscilloscope is used





3. Oscilloscope cannot be used for





4. CRO is an abbreviation of





5. An oscilloscope can be used for this purpose





6. The sweep/time control knob of an oscilloscope is used





7. On the front panel, there is a





8. To adjust the horizontal length of the signal, this knob of CRO is used





9. This is found inside of an oscilloscope





10. In an oscilloscope, this is used to deflect the trace beam horizontally





11. Horizontal signals in an oscilloscope than the vertical signals, are inherently





12. Trigger circuit in a CRO is used to





13. The signal which is to be observed on CRO, is provided on





14. Main component (called its heart) of CRO is





15. Output voltage of power supply of a CRO is





16. Purpose of electron gun assembly in a cathode ray tube is





17. Gun assembly of cathode ray tube consists of





18. (In a CRO), The deflecting plates are the part of





19. Intensity of light spot on the screen of a CRO is controlled by





20. A thin layer of this material is applied on the inner side of cathode ray tube





21. The colour of light spot on CRO screen depends upon





22. The number of horizontal and vertical squares on CRO screen are





23. The size of one square on CRO screen is





24. When there is no voltage on X & Y plates, the spot appears





25. If AC signal is on X plates only, trace will be





26. If AC voltage only on X plates, trace will be





27. To trace AC signal properly on CRO





28. Signal is sent to vertical plates through





29. Dual trace oscilloscope uses





30. Two signals are applied alternately by





31. To get two traces





32. Double beam oscilloscope uses





33. For ultra high frequency signals





34. For transient signals





35. Property to retain signal





36. Storage oscilloscope suitable for





37. Writing gun used in





38. Extra screens used in





39. Output to computer





40. CRO directly measures





41. Bandwidth of sampling CRO





42. Frequency measurement methods





43. Cannot measure





44. Produces signals





45. Basic part of signal generator





46. Produces sinusoidal signal only





47. Oscillator components





48. Types of oscillator





49. Signal generator type





50. Frequency range of AF generator





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