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Ultrasonic Sensor Question & Answers

December 6, 2021 By WatElectronics

This article lists 100 Ultrasonic Sensor MCQs for engineering students. All the Ultrasonic Sensor Questions & 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 Ultrasonic Sensor.

A sensor is a device that senses physical quantity within a bounded region and converts the quantity into electrical form. They are classified based on the physical quantity being measured such as light sensor, ultrasonic sensor,  sound sensor, and more. An ultrasonic sensor is a sensor that senses or generates ultrasonic-based energy. It is also called an ultrasonic transducer.

The block diagram of the ultrasonic sensor consists of a transmitter, receiver, and trans-receiver. Where a transmitter is placed at sender's end, a receiver at recipient end, and a transceiver can be placed either of the ends.

These sensors are used for detecting ceramic, plastic, and water level detection. They work on the principle of sound waves at 20Hz to 20KHz of frequency. They mostly follow the ultrasonic-based method for employing longitudinal waves.

HC-SR04 is a class of ultrasonic sensors that operates similarly. They provide benefits in terms of generating accurate results, fast detection properties, and are suitable for parallel surfaces. But limited in terms of inflexible scanning, limited distance, and suitable for the parallel surface. They are commonly used in locating gaps, cracks and measuring thickness.

1). A device that detects any physical changes with in its environment is called____?

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2). A sensor is also called ______?

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Read more about Transducer.
3). A sensor is classified based on_____?

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4). A sensor is a ____?

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5). A sensor that senses or generates ultrasonic based energy is called_____?

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6). A ultra sonic sensor is classified in to ____ types?

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7). Which of the following component is of sensor is placed near senders ends in digital communication?

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8). Which of the following component is of sensor is placed near receivers ends in digital communication?

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9). Which of the following is the function of sensors transmitters?

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10). Which of the following is the function of sensors receiver?

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11). Which of the following component of sensor has the capability to perform transmision and reception?

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12). Which of the following component of ultrasonic sensor converts digital signal to ultrasound?

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13). Which of the following component of ultrasonic sensor converts ultrasound to digital signal?

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14). Which of the following type of ultrasonic transducer is used in medical industry?

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15). Which of the following is the purpose of ultrasonic sensor?

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Read more about Water Level Indicator.
16). A sensor component is based on ___ subject?

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17). A ultrasonic sensor uses ____ wave?

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18). On which of the following principle do ultrasonic sensor depends on?

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19). A sound wave depends on ____ properties?

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20). Which of the following are the properties of sound waves observed in an ultrasonic sensor?

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21). Which of the following is the frequency range of sound waves?

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22). Which of the following is the frequency range of ultrasonic detection?

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23). Which of the following is the formula of velocity of ultrasonic sensors?

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24). Which of the following type of waves do a ultrasonic sensor examines?

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25). Which of the following type of sound wave is defined to be a compressed wave whose particle motion is in same direction of wave propagation?

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Ultrasonic Sensor Interview Questions and Answers

26). Which of the following type of sound wave is defined to be a wave in which motion of particle perpendicular to propagation direction?

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27). Which of the following type of sound waves frequency do ultrasonic sensor produces?

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28). Which of the following is the formula for thickness of material?

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29). On which of the following principle do ultrasonic sensor works on?

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30). Which of the following are the commonly used transducers?

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31). Which of the following are the applications of contact based transducers?

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32). Which of the following are the applications of angle beam transducers?

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33). Which of the following is the advantages of immersion transducers with respect to contact transducer?

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34). Which of the following energy is the input to ultrasonic sensor?

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35). Which of the following is the input voltage provided to ultrasonic sensor?

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36). Which of the following is the primary application of ultrasonic sensor?

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37). On which of the following properties do proximity sensors do not allow ultrasonic sensor to be susceptible?

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38). Which of the following is the function of ultrasonic level sensor when place in a water tank?

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39). On which of the following factors do an ultrasonic sensor do not depends on?

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40). An ultrasonic sensor has ___ number of pins?

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41). In an Arduino based application of ultrasonic sensor, which of the following mode is set to enable ultrasonic sensor?

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42). Which of the following is the formula for distance of HC SR04 type ultrasonic sensor?

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43). Which of the following application of ultrasonic sensor measures sea level?

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44). Which of the following application of ultrasonic sensor measures both vertical and horizontal components of wind speed?

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45). Which of the following application of ultrasonic application has more durability factor?

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46). Which of the following application of ultrasonic sensor measures winds temperature?

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Read more about Anemometer.
47). Which of the following application of ultrasonic sensor track live data with in its environment and display on screen on a remote monitoring system?

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48). Which of the following is result of ultrasonic sensor on supplying voltage of 25V?

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49). Which of the following factors are affected while using ultrasonic sensor?

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50). Which of the following is the minimum current value required for an ultrasonic sensor to operate?

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Ultrasonic Sensor Important Questions for Interviews

51). Which of the following are the components of ultrasonic sensors applications?

Hint
Read more about Transformer.
52). Which of the following type of micro controller is used in an ultrasonic sensors applications circuit?

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Read more about 8051.
53). How many pins do 8051 micro controller consist of?

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54). In how many ways a ultrasonic sensor is available?

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55). Which of the following is the range of HC-SR04 type ultrasonic sensor?

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56). A HC-SR04 type ultrasonic sensor provides ____ type of measurement function?

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57). How much frequency do a HC- SR04 type ultrasonic sensor transmits?

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58). Which of the following is the supply voltage for HC- SR04 type ultrasonic sensor?

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59). Which of the following are the ways that supply is provided to HC-SR04 type ultrasonic sensor?

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60). Which of the following is the measuring angle of HC-SR04 type ultrasonic sensor?

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61). What is value of trigger input signal applied to HC-SR04 type ultrasonic sensor?

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62). Which of the following are the limitations of HC-SR04 type ultrasonic sensor?

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63). Which of the following is the accuracy data obtained from ultrasonic sensor?

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64). Which of the following type of TTL pulse is provided to ultrasonic sensor?

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65). Which of the following is the major benefit of ultrasonic sensor?

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66). Which of the following property of ultrasonic sensor defines that it does not scratch the detecting object?

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67). Which of the following type of substances are used in an ultrasonic sensor components?

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68). Which of the following type of force do a piezoelectric ceramics generate?

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69). How many sensing modes do a ultrasonic sensor has?

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70). Which of the following are the examples of ultrasonic sensing modes models?

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71). Which of the following ultrasonic sensing modes models detects the attenuation of ultrasonic beam?

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72). Which of the following ultrasonic sensing modes models detects the reflected ultrasonic beam from the object present with in the sensing distance range set with the distance adjuster?

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73). Which of the following ultrasonic sensing modes models detects the reflected ultrasonic beam from the object present in sensing range set with distance selector?

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74). Which of the following is the examples of surface objects, when an ultrasonic wave reflection from a flat surface?

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75). Which of the following is the examples of surface objects, when an ultrasonic wave reflection from a flat surface?

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Ultrasonic Sensor Quiz Questions and Answers.

76). Which of the following is the examples of Powders objects, when an ultrasonic wave reflection from a flat surface?

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77). Based on which of the following parameter do the ultrasonic sensors reflection beam varies?

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78). Which of the following type of objects have maximum reflection when an ultrasonic wave hits the object?

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79). Which of the following devices converts one energy in to other energy?

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Read more about Transducer.
80). Which of the following are the properties of a transducer?

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81). A transducer which transduces physical type quantity in to electric type quantity is called?

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82). Which of the following are the examples of transducers?

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83). Which of the following are the properties of a transducer?

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84). Which of the following characteristic of transducer defines ratio between smallest and largest amplitudes signal?

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85). A greater dynamic based range of a transducer are more ______ ?

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86). When a transducer generates identical output stimulated by same input is called___?

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87). Which of the following component do HC-SR04 type ultrasonic sensor uses to determine objects distance from itself?

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88). How many modules do an HC-SR04 type ultrasonic sensor has?

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89). Which of the following are the applications of HC-SR04 type ultrasonic sensor?

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90). On which of the following type of wave do HC-SR04 type ultrasonic sensor work?

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91). Which of the following is the formula for calculating the distance of object while using an ultrasonic sensor?

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92). Distance is measured in terms of _______ units?

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93). Time is measured in terms of ___________?

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94). Which of the following are the advantages of ultrasonic sensor?

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95). Which of the following are the limitations of ultrasonic sensor?

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96). Which of the following is the frequency of ultrasonic waves?

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97). Which of the following scientist invented ultrasonic sensor?

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98). In which year ultrasonic sensor in medical field was used in India?

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99). Which of the following are the negative effects of ultrasonic sensor on human life?

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100). What if the decibel value of ultrasonic sensor cause ear damage?

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