Cathode Ray Oscilloscope Question & Answers January 24, 2022 By WatElectronics This article lists 100 Cathode Ray Oscilloscope MCQs for engineering students. All the Cathode Ray Oscilloscope Questions and Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up their fundamentals on Cathode Ray Oscilloscope. Cathode Ray Oscilloscope (CRO) is electronic equipment for laboratory purposes. The function of this device is to display the analyzed and measured data in the electrical form as waveforms on its display. CRO displays the waveform parameters in terms of amplitude, time, voltage, and frequency in a 2D coordinate that is X and Y coordinate. In X & Y coordinates, X-coordinate is a horizontal coordinate whereas Y-coordinate is the vertical coordinate. Before displaying the end result the CRO firstly analyses the signal, measures the waveform, and plots on the 2D coordinate. The CRO displays the signal in form of a luminous dot on the screen. It basically comprises CRT, glass envelope, fluorescent-based screen, electronic gun, and deflecting plate as the main components. Where each of these components has its own functionality. They benefit in terms of flexibly representing signals in digital form on the screen in terms of voltage, time, current, amplitude, and frequency. The shape of the wave can be observed on the screen clearly, time-efficient. But lacks in terms of multiple control terminals, costly, difficult to repair once damaged. 1). A CRO is also named as _________? Oscilloscope DSO o-Scope All the above None Hint 2). A CRO is a electronic based ______ device? Measuring Testing Comparing Amplifying None Hint 3). A CRO represents resultant waves in ____ form? Diagrammatic Graphical Flow chart All the above None Hint 4). The output from CRO is represented in ______ dimensions? 1-D 2-D 3-D 4-D None Hint 5). Which of the following are the parameters functions an oscilloscope represents a digital signal? Time Frequency Voltage All the above None Hint 6). In which of the following fields oscilloscopes are used _________? Automotive Medicine Engineering All the above None Hint Read more about Oscilloscope. 7). General purpose type oscilloscope are used for ____ purpose? Maintenance of electronic equipment Maintenance of lab work Recording Both a and b None Hint 8). Special purpose based oscilloscope are used for ____ purpose? Display wave patterns Analyze automotive based ignition system Electrocardiogram All the above None Hint 9). Which of the following device an ancient oscilloscope was designed with? CRTs Vacuum tubes Linear based amplifiers Both a and c None Hint Read more about Amplifiers. 10). CRT stands for ____? Cathode ray tubes Cathode ride tub Carry ray tube All the above None Hint 11). Which of the following are the components of digital storage oscilloscope? Display ADC DAC All the above None Hint 12). Which of the following is the function of ADC? Analog to Digital Conversion Digital to Analog Conversion Analog to Analog Conversion Digital to Digital Conversion None Hint 13). A Digital storage type oscilloscope with zero integrated display system is called_________? Digitisers Digitometers Repeaters All the above None Hint 14). A Digital storage type oscilloscope with a computer performs ________? Processes data Displays waveforms Clamps the waves Both a and b None Hint 15). Analog based CRO has _____ number of sections? 2 6 4 5 None Hint 16). Which of the following are the display sections of CRT? Horizontal lines Vertical lines Beam finders All the above None Hint 17). A horizontal and vertical lines in CRT is also called ______? Graticule Granulars Grids All the above None Hint 18). Which of the following section in CRT controls the signals amplitude? Horizontal Vertical Longitudinal All the above None Hint 19). Which of the following are the components of vertical sections? Volts/Div ADC selector DAC selector All the above None Hint 20). Which of the following are the parameters controlled by horizontal sections in CRO? Sweep Sec/Div Position All the above None Hint 21). Which of the following section in CRT controls the sweep motion? Horizontal Vertical Trigger All the above None Hint 22). Which of the following are the functions of trigger in CRT? It can be set to restart automatically It can be configured to respond to internal event It can be configured to respond to external event All the above None Hint 23). Which of the following are the principle controls of trigger section in CRT? Source Coupling selector switch External trigger input All the above None Hint 24). Which of the following is the additional component of CRO? Bulb Load Probe All the above None Hint 25). The probes used in CRO is _____ type? 2D 1D 3D 4D None Hint Cathode Ray Oscilloscope Interview Questions and Answers 26). Which of the following are the examples of coaxial based probes? BNC UHF Binding posts All the above None Hint 27). At which of the following frequency range coaxial based probes are used? Higher Lower Zero Constant None Hint 28). Which of the following type of probe is used for own coaxial cable is used? Self coaxial cable Scope probe RB probe All the above None Hint 29). Which of the following type of probe is used for special cable is used? Self coaxial cable Scope probe RB probe All the above None Hint 30). Which of the following is the full form of BNC connector? Bayonet Neill Concelman Bay Neill Concelman Bayonet Net Concelman Bayonet Nill Concelman None Hint 31). Which of the following type connector BNC connects? Radio frequency UV Audio All the above None Hint 32). A BNC type connector is _____ type communication bus? Parallel Coaxial Serial All the above None Hint 33). Which of the following is the frequency of coaxial type cable BNC? 0 to 4 GHz 1 to 3GHZ 0 to 4 MHz 0 to 4 Hz None Hint 34). Which of the following are the applications of BNC? Radio TV Test instruments All the above None Hint 35). Which of the following are the network application of BNC connector? ARC net IBM PC Network 10BASE2 All the above None Hint 36). A BNC cable supports ____ volts of cable? 1000 Volts 2000 Volts 3000 Volts Below 500 Volts None Hint 37). Which of the following is the frequency of RF based application of BNC? 1GHz 2GHz 3GHz 4GHz None Hint 38). A CRT is _____ device? Vacuum tube Glass tube Mercury tube All the above None Hint 39). A CRT operates with ______ heating of tungsten coil? Electrically Electronically Mechanically All the above None Hint 40). A vacuum tube is also called ______? Electron tube Valve Tube All the above None Hint 41). Which of the following type of tube uses thermionic based emission of an electrons from a hot cathode? Thermionic tube Thermionic valve Non thermionic Both a and b None Hint 42). Which of the following is an example of thermionic tube? Signal amplification Current rectification Vacuum phototube Both a and b None Hint 43). Which of the following is the example of non thermionic tube? Signal amplification Current rectification Vacuum phototube Both a and b None Hint 44). In a vacuum tube electrons are excited from _____ ends? Anode to cathode Cathode to anode Cathode to cathode Anode to anode None Hint 45). The input to CRO is _____? Electrical Pressure Temperature All the above None Hint 46). The output from CRO is represented in _____ form? Graphical Pi-chart Bar diagram Both b and c None Hint 47). Anode is represented with _____ symbol? + - * / None Hint 48). Cathode is represented with _____ symbol? + - * / None Hint 49). Which of the following are the components of vacuum tube? Battery Glass bulb Filament All the above None Hint 50). Which of the following is the simplest form of vacuum tube? Diode Capacitor Resistor Transistor None Hint Cathode Ray Oscilloscope Important Questions for Interviews 51). To minimize the loading in CRO _____ probe is used? Attenuator Coaxial Specific All the above None Hint Read more about Attenuator. 52). Which of the following is the resistance value of attenuator probe? 10 ohms 9ohms 8 ohms 7 ohms None Hint 53). Which of the following in front panel control CRT feature adjust the knob to get sharpest data? Focus control Intensity control Astigmatism Beam finder None Hint 54). Which of the following in front panel control CRT feature adjust the brightness? Focus control Intensity control Astigmatism Beam finder None Hint 55). Which of the following in front panel control CRT feature adjust the voltage level? Focus control Intensity control Astigmatism in front panel control CRT feature adjust the voltage level. Beam finder None Hint 56). An Astigmatism is also called ______? Shape Spot shape Spot Both a and b None Hint 57). Which of the following in front panel control CRT feature distorts the resultant trace? Focus control Intensity control Astigmatism Beam finder None Hint 58). Which of the following in front panel control CRT feature acts as reference marks while measuring the trace that is displayed? Focus control Graticule Astigmatism Beam finder None Hint 59). Which of the following in front panel control CRT feature adjusts the horizontal based speed of CRT spot? Focus control Graticule Time based controls Beam finder None Hint 60). A process where the horizontal based speed of CRT spot is adjust is called _______? Heep Sweep Sweap All the above None Hint 61). _____ type of oscilloscopes have hold off based control? Higher end Analog oscilloscope Lower end Analog oscilloscope Higher end Digital oscilloscope Lower end Digital oscilloscope None Hint 62). _____ feature in CRT cannot be triggered again once on completion of one trigger? Holdoff control Graticule Timebased controls Beam finder None Hint 63). _____ feature in CRT provides stabilized output feature? Hold off control Graticule Time based controls Beam finder None Hint 64). Triggered based sweeps provides _____ on CRT screen? Blank Hike Triangle All the above None Hint 65). _____ generates free running based triggers? Auto sweep Reset sweep Zero sweep All the above None Hint 66). An auto sweep provides ____ output? Octa trigger Pseudo trigger Hexa trigger All the above None Hint 67). At which repetition rates pseudo codes are blocked? Low High Zero Infinity None Hint 68). A CRT has ____ number of triggers? 1 2 3 4 None Hint 69). In which of the following applications a recurrent based sweeps is observed? Radio TV Voltage measuring equipment All the above None Hint 70). Voltage is measured in _____ SI units? Volts Amps Ohms All the above None Hint 71). Which of the following scientist researched on elastic string of oscillations? Karl Ferdinand Charles Ferdinand Bouran Karl All the above None Hint 72). ____ device was used as a electron based gun via fluorescent screen? CRT Diode Bulb Switch None Hint 73). Which of the following is the first oscilloscope designed? Brauns electrometer Karls bulb Diode All the above None Hint 74). A CRO performs____ ? Analyze waveform Phenomena Transients All the above None Hint 75). On which of the following parameters CRO depends on ____? Voltage Current Pressure All the above None Hint Cathode Ray Oscilloscope Quiz Questions and Answers. 76). Which of the following type of display is used in CRO? Fluorescent Chemiluminescence Phosphorescence All the above None Hint 77). A CRT represents signal in _____ form to visual? Electrical Analog Mechanical Pressure None Hint 78). Which of the following are the components of CRT? Vacuum tube Electron gun Electrostatic deflection plates All the above None Hint 79). Which of the following are the other components of CRT? Heater Cathode Grid All the above None Hint 80). Which of the following are the components of electronic gun? Grid Cathode Focusing anode All the above None Hint 81). __________ is used in electronic gun for accelerating emission of electron at room temperature? Strontium layer Barium layer Lithium layer Both a and b None Hint 82). ____ substance is used in CRT cylinder for supply purpose? Strontium layer Barium layer Lithium layer Nickle layer None Hint 83). _____ amount of voltage is given to focusing electrodes? 1500 500 1000 2000 None Hint 84). _____ amount of voltage is given to anode for pre-acceleration and acceleration? 1500 500 1000 2000 None Hint 85). _____ number of focusing based methods are used in CRO? 1 2 3 4 None Hint 86). A CRO has ______ type of focusing tube? Electronic Electrical Electrostatic Mechanic None Hint 87). ______ number of plates are used in CRO? 1 2 3 4 None Hint 88). ____ number of plates are used in vertical deflection of CRO? 1 2 3 4 None Hint 89). A vertical deflection of CRO represents ______ coordinate? X Y Z Both a and b None Hint 90). ____ number of plates are used in horizontal deflection of CRO? 1 2 3 4 None Hint 91). A horizontal deflection of CRO represents ______ coordinate? X Y Z Both a and b None Hint 92). When there is X and Y axis in graph then it’s a _____ dimension? 1D 2D 3D 4D None Hint 93). A horizontal deflection in CRT is called ______? X plate Horizontal deflection plate Y plate Both a and b None Hint 94). The front end of CRT is known as ______? Face plate Display Control knob All the above None Hint 95). Which of the following is the size of front plate? 100mm*100mm 10mm*100mm 10mm*10mm 1000mm*100mm None Hint 96). ____ type of crystal is used for CRT screen? Phosphor Silicon Graphite Sulphur None Hint 97). A phosphor plate converts electrical based energy to ______ energy? Luminous Light Energy Both a and b None Hint 98). ____ happens to energy level in CRT when electron based ray hits phosphorous crystal? Increases Decreases Zero Infinite None Hint 99). Time period is measured in terms of _____? Milliseconds Seconds Nano seconds All the above None Hint 100). Which of the following is the application of CRO? Current measurement Radio stations All the above None Hint Time's up
