Diodes on Power Electronics related Questions and Answers - Page 2

Question 11 : In a Schottky diode, the silcon is usually
1. N-type
2. P-type
3. un-doped semiconductor
4. silicon is not used
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Question 12 : In a Schottky diode, the aluminum metal acts as a __________
1. anode
2. cathode
3. gate
4. common terminal
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Question 13 : The peak inverse current IP for a power diode is given by the expression
1. IP=t + di/dt
2. IP=t * log ⁡i
3. IP=t * di/dt
4. IP=t * ∫ t*i dt
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Question 14 : In case of an ideal power diode, the leakage current flows from
1. anode to cathode
2. cathode to anode
3. in both the directions
4. leakage current does not flow
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Question 15 : The power loss in which of the following cases would be the maximum?
1. When both V & I are minimum
2. When both V & I are maximum
3. When only V is maximum
4. When only I is maximum
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Question 16 : Which of the following diodes uses a metal-semiconductor junction?
1. General purpose diodes
2. Fast recovery diodes
3. Schottky diode
4. None of the mentioned
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Question 18 : As compared to a p-n junction diode(of the same rating), a Schottky diode has ___________
1. higher cut-in voltage
2. lower reverse leakage current
3. higher operating frequency
4. higher switching time
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Question 19 : For a p-n junction diode, the peak inverse current & the reverse recovery time are dependent on
1. inverse voltage
2. forward Voltage
3. di/dt
4. all of the above mentioned
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