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Regulated DC Power Supply Question & Answers

September 2, 2021 By Wat Electrical Leave a Comment

This article lists 100 Regulated DC Power Supply MCQs for engineering students. All the Regulated DC Power Supply Questions & Answers given below includes solution and link wherever possible to the relevant topic.

In all electronic circuits, we require a constant DC voltage because the fluctuations in the input voltage may damage the electronic circuits, so to avoid this we use a regulated power supply.

The voltage regulator is defined as a circuit that keeps the output voltage constant even though the voltage and load vary. A typical power supply unit consists of a transformer, rectifier, and smoothing.

1). The regulated power supply is used in _________________

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2). The unregulated power supply is used in ___________

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3). How many terminals does monolithic voltage regulators have _____________

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4).The features of IC723 linear regulator are ______________

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5). The blocks that regulated DC power supply consists of ____________

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6). Which circuit is used for rectification?

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7). What are the commonly used filter circuits?

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8). The maximum output power of the push-pull converter topology of SMPS is _________

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9). How many terminals do fixed voltage regulators have?


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10). Which one of the following is a three-terminal fixed voltage regulator?

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11). ___________ are the commonly used type of voltage regulators

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12). The circuit design of switching regulated power supplies is ______________

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13). The load regulation of switching regulated DC power supply is from ______________

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14). The line regulation of switching regulated DC power supply is from ______________

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15). What are the advantages of linear power supplies?

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16). The ripple (RMS) of switching regulated DC power supply is between ______________

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17). The efficiency of switching regulated DC power supply is ______________

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18). The transient recovery of switching regulated DC power supply is ______________

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19). What are the advantages of switched power supplies?

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20). The hold-up time of switching regulated DC power supply is between ______________

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21). The leakage in switching regulated DC power supply is ______________

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22). What are the advantages of battery-based power supplies?

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23). The size (power density) of switching regulated DC power supply is ______________

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24). The power factor in switching regulated DC power supply without PFC is ______________

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25). The power factor in switching regulated DC power supply with PFC is ______________

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Regulated DC Power Supply Important MCQ's

26). The weight of the switching regulated DC power supply is ______________

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27). What are the disadvantages of linear power supplies?

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28). The switch mode power supply has _____________

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29). What is the standard form of UPS?

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30). What is the standard form of SMPS?

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31). An offline uninterruptable power supplies has ______________ change over time

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32). What are the disadvantages of switching regulated DC power supplies?

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33). In inverters the changeover time is ______________

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34). The uninterruptable power supplies categorized into _______________

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35). What are the disadvantages of battery-based regulated power supplies?

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36). Where uninterruptible power supplies are used?

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37). What are the advantages of UPS?

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38). Which one of the following regulator costs is low?

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39). The maximum output power of the half-bridge converter topology of SMPS is _________

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40). Which one of the following has low maintenance?

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41). In _________ regulator the mass is high

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42). The noise is high in _____________ regulator

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43). The power factor of AC lies between __________

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44). The power factor of DC lies between __________

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45). The direct current obtained from _____________

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46). The alternate current obtained from _____________

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47). The frequency of the direct current is __________

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48). The frequency of the alternate current is __________

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49). What is the unit of boost inductor?

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50). In the circuit the DC flows in __________

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Regulated DC Power Supply MCQ's with Hints

51). What is the unit of AC and DC resistors?

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52). In which one of the following power supply the reliability is low?

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53). In which one of the following power supply the maintenance cost is high?

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54). What is the unit of DC capacitors?

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55). In _____________ power supply the input linear filter is required

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56). The holdup time of linear DC power supply is _________

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57). The input voltage range of linear DC power supply is _________

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58). The regulated DC power supply consists of ___________

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59). The load regulation of linear DC power supply is between ______________

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60). What is the function of a transformer in a regulated DC power supply?

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61). The line regulation of linear DC power supply is between ______________

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62). What are the advantages of Zener diode?

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63). The noise in linear DC power supply is ______________

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64). What is the function of the rectifier in the DC power supply?

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65). The transient response in linear DC power supply is ______________

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66). The design of the linear DC power supply is ______________

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67). A _____________ circuit is used to smoothen the variations present in the rectified output

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68). What are the advantages of the series regulator?

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69). What are the advantages of the three-terminal regulator?

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70). The efficiency of linear DC power supply is between ____________

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71). The input line filter is not required in __________ power supply

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72). The alternating current from transformer consumes___________ power

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73). The direct current from generator suitable for ___________ metal

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74). The input voltage range of 7905 regulator is ____________

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75). The output voltage of 7905 regulator is ____________

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Regulated DC Power Supply MCQ's for Quiz

76). The efficiency of the PWM switching regulator is _________

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77). The RF noise in the PWM switching regulator is _________

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78). The circuit design of unregulated power supplies is _________

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79). What are the disadvantages of the series regulator?

Hint
80). What are the disadvantages of the three-terminal regulators?

Hint
81). The input voltage range of 7912 regulator is ____________

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82). The output voltage of 7912 regulator is ____________

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83). The RF noise in resonant transition switching regulator is _________

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84). The line regulation of unregulated DC power supply is from ______________

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85). The ripple (RMS) of unregulated DC power supply is between ______________

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86). The efficiency of unregulated power supplies is _________

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87). The leakage in unregulated power supplies is ______________

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88). The transformers are categorized into ___________

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89). The maximum output power of the forward converter topology of SMPS is _________

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90). ____________ filter is used to reduce the Hum and ripple

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91). The input voltage range of 7915 regulator is ____________

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92). The output voltage of 7915 regulator is ____________

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93). The efficiency of the resonant transition switching regulator is _________

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94). The SMPS categorized into _______ types according to the output and input waveforms

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95). ____________ are the topologies of switched-mode power supply

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96). ____________ are the non-isolated SMPS

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97). The maximum output power of the fly-back converter topology of SMPS is _________

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98). ___________ are the categories of power supplies

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99). What are the drawbacks of UPS?

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100). The maximum output power of the full-bridge converter topology of SMPS is _________

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