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Resistance Temperature Detector Question & Answers

March 4, 2023 By Wat Electrical

This article lists 100 Resistance Temperature Detector MCQs for engineering students. All the Resistance Temperature Detector 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 on the fundamentals of Resistance Temperature Detector.

A resistance-type temperature detector or an RTD, Resistance thermometer/sensor is a device that measures the quantity of temperature flow in an electric-type substance. It measures the quantity in terms of ohms.

The component used in the RTD bridge-based circuit includes an RTD sensor, resistors, and voltage source. They are classified into multiple types based on substances used in their design, such as copper, nickel, and platinum. The techniques to measure temperature via RTD are 2, 3, and 4 wire.

The advantage of a resistance temperature detector includes greater stability, greater repeatability, and accuracy. The disadvantages of RTD sensors include high cost, minimum sensitivity, and performs on input sources application.

The applications of RTD include temperature measuring, microelectronics, and the textile industry. Compared to other temperature sensor such as thermometers and thermocouples; RTDs are more accurate.

1). A resistance type temperature detector is also called?

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2). Which of the following are other types of temperature sensors?

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Read more about Thermocouple
3). A RTD based device has ____ characteristics with respect to a range of temperature?

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4). Which of the following is RTD temperature resistance formula?

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5). Which of the following is the formula for small range temperature value?

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6). Which of the following substances are used in RTD devices?

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7). Which of the following metal has melting temperature at 650 degrees?


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8). Which of the following metal has melting temperature at 120 degrees?

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9). Which of the following metal has melting temperature at 300 degrees?

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10). Which of the following is the resistance value change of platinum per degree celsius?

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11). Which of the following is the formula to check platinum metal purity?

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12). Which of the following substance is placed between steel sheath & wire resistance material for good electrical based insulation?

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13). Which of the following are the substances of RTD?

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14). Which of the following is negligible parameter in a RTD wire?

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15). Which of the following is the benefit of mica cross based frame in a RTD device?

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16). Which of the following parameter is decreased when wire strain increases?

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17). Which of the following component are used in RTD bridge based circuit?

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18). Which of the following is the formula for power dissipation of RTD?

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Read more about Digital Sensor
19). The electric current in RTD should be maintained?

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20). Which of the following errors are minimized with known RTD procedure?

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21). Which of the following parameter is measured across resistor in RTD bridge circuit?

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22). Which of the following are the types of RTD bridge configuration circuit?

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Read more about Resistor 
23). In which of the following bridge configuration dummy wire is not added?

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24). Which of the following is the resistance units?

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25). Which of the following is the formula for resistivity?

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Resistance Temperature Detector MCQs for Students

26). Which of the following is the advantage of resistance temperature detector?

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27). Which of the following are the disadvantages of RTD sensor?

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28). Which of the following are the applications of RTD?

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29). Which of the following device does RTD replaces?

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30). Which of the following is required in thermocouple?

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31). Which of the following is the principle of RTD?

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32). A sensor device is ___ type of component?

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33). A piezoelectric based sensor is used for calculating?

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34). Which of the following parameter does hall effect measures?

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35). Which of the following substance protects the resistive substance in a RTD?

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36). Which of the following insulation materials are used having below 250 degree Centigrade?

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37). Which of the following are the examples of RTD?

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38). Which of the following substances causes seebeck effect in a term?

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39). A seebeck effect is ____ type of force?

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40). The value of voltage in a circuit is _____ when voltage drop occurs?

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41). In which of the following circuit portions does voltage drop occurs in a electric circuit?

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42). Which of the following are the examples of active elements in a electronic circuit?

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43). Which of the following are the examples of passive components in a electronic circuit?

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Read more about Core Transformer
44). Identify the RTD bridge configuration from the following image?

RTD bridge diagram

RTD bridge diagram

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45). Identify the RTD bridge configuration from the following image?

RTD bridge diagram

RTD bridge diagram

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46). Which among the RTD bridge configuration is most complex ?

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47). Which of the following is the advantage of RTD bridge wire 4?

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48). Which of the following is the 2-wire RTD bridge resistance formula? Where Resistance RT, R, R1, R2 are in the circuit.

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49). Which of the following are the applications of temperature sensor?

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50). Which of the following states does a thermometer can measure?

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Resistance Temperature Detector for Interviews

51). What is the temperature range of RTD?

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52). Which of the following is error rate formula of RTD?

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53). Which of the following are the techniques to measure temperature via RTD?

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54). In which of the following RTD temperature measuring techniques current is sent on one wire set and voltage is sensed on other wire set?

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55). A RTD is a __ type of temperature sensing type device?

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56). When temperature is rised in RTD then resistance of metal ______ with respect to floe of current?

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57). Which of the following is the centralised element of RTD?

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58). Which of the following are the units calibrated from RTD?

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59). A platinum substance of RTD component has ______ temperature coefficient?

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60). Which of the following extension leads does a platinum sensor element of RTD uses?

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61). Which of the following are the advantages of a platinum sensor if used in RTD?

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62). Which of the following is the operational temperature value of Nickel if used in RTD?

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63). At which of the following temperature range does Nickel based substance become non-linear in a RTD?

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64). Which of the following are the properties of Copper based substance?

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65). A balco based RTD sensors has which of the following substances?

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66). At which of the following temperature ranges, 500 ohms Balco based RTD provides linear resistance property?

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67). Which of the following are the properties of Balco based RTD sensor?

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68). Which of the following are the properties of tungsten based RTD?

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69). Which of the following are the characteristics of thin film RTD?

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70). Which of the following are the components of Thin film RTD type sensor?

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71). Which of the following type of RTD sensor has thin type wound wire in an ceramic housing holding non-conductive type powder?

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72). Which of the following is the advantage of coiled RTD type sensor?

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73). Which of the following components of Coiled Element of RTD is placed with in protective metal sheath?

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74).Which of the following element is used for designing PT100 type RTD sensor?

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75). What is the temperature of PT 100 RTD for 100 ohms?

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Resistance Temperature Detector MCQs for Exams

76). Which of the following is the common temperature coefficient of PT100 RTD sensor?

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77). In which of the following application PT10000 RTD sensor is used?

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78). Which are the advantages of PT 1000 RTD sensor?

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79). In which form is the measure output obtained from RTD sensor is?

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80). RTD is ____ in protective casing?

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81). In which of the following applications RTDs are coated using Perfluoroalkovy?

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82). Which of the following is the measuring range of thermocouple?

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83).Which of the following is RTDs industrial applications temperatures reading?

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84). Which device has quick response time?

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85). Which device fails to operate in vibrational environment?

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86). What is the power range of RTD?

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87). Which devices do not require external power supply to operate?

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88). Which devices generates EMF fields?

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89). What is the accuracy of RTD?

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90). Which is the accuracy of thermocouple?

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91). Which of the following is benefit of RTD I solar power application?

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92). Which of the following RTD sensor is used in pharmaceutical based industry?

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93). Which are benefits of semiconductor type RTD sensor?

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94). In which stages of food processing RTD sensor is used?

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95). In which stages RTD sensor is used in HAVC?

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96). Which are the use of RTD in aerospace?

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97). In which components does RTD used as temperature control in medical field?

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98). In which components does RTD used as temperature control in communication field?

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99). In which configuration current flow is maximum?

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100). Which of the following are units of temperature?

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