Rectifiers Quiz | Rectifiers Objective Type Questions and Answers

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Questions
21 The advantages of mercury arc rectifier is that
A It is light in weight and occupies small floor space
B It has high efficiency
C It has high overload capacity
D All of the above

Answer: All of the above
22 To produce cathode spot in a mercury arc rectified
A Anode is heated
B Tube is evacuated
C An auxiliary electrode is used
D Low mercury vapour pressures are used

Answer: An auxiliary electrode is used
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23 The ionization potential of mercury is approximately
A 5.4 V
B 8.8 V
C 10.4 V
D 16.4 V

Answer: 10.4 V
24 Bridge rectifier is an alternative for
A Full wave rectifier
B Peak rectifier
C Half wave rectifier
D None of the mentioned

Answer: Full wave rectifier
25 Which of the following is true for a bridge rectifier?
A The peak inverse voltage or PIV for the bridge rectifier is lower when compared to an identical center tapped rectifier
B The output voltage for the center tapped rectifier is lower than the identical bridge rectifier
C A transistor of higher number of coil is required for center tapped rectifier than the identical bridge rectifier
D All of the mentioned

Answer: All of the mentioned
26 For a half wave or full wave rectifier the Peak Inverse Voltage of the rectifier is always
A Greater than the input voltage
B Smaller than the input voltage
C Equal to the input voltage
D Greater than the input voltage for full wave rectifier and smaller for the half wave rectifier

Answer: Smaller than the input voltage

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