Question 21 : In the equilibrium state the barrier, potential across a unbiased germanium diode is __________
1. 0.3 V
2. 0.7 V
3. 1.7 V
4. 0 V
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Question 22 : A power diode with small softness factor (S-factor) has
1. small oscillatory over voltages
2. large oscillatory over voltages
3. large peak reverse current
4. small peak reverse current
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Question 23 : In an AC-DC converter, a diode might be used as a
1. voltage source
2. phase angle controller
3. freewheeling Diode
4. filter
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Question 24 : A Schottky diode can be switchd off much faster than an equivalent p-n junction diode due to its
1. higher operating frequency
2. no recombination of charges
3. more compact structure
4. None of the mentioned
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Question 25 : In the equilibrium state, the barrier potential across a unbiased silicon diode is _________
1. 0.3 V
2. 0.7 V
3. 1.3 V
4. 0 V
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Question 26 : Which of the following is true in case of a power diode with R load?
1. I grows almost linearly with V
2. I decays almost linearly with V
3. I is independent of V
4. I initial grows than decays
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Question 27 : An ideal power diode must have
1. low forward current carrying capacity
2. large reverse breakdown voltage
3. high ohmic junction resistance
4. high reverse recovery time
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Question 28 : Which of the following are/is the majority charge carriers in a Schottky diode?
1. Holes
2. Electrons
3. Both holes & Electrons carry equal current
4. None of the mentioned
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Question 29 : The n-region has a greater concentration of _________ as compared to the p-region in a P-N junction diode.
1. holes
2. electrons
3. both holes & electrons
4. phonons
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Question 30 : Schottky diodes are also called as
1. metal diode
2. hot carrier diode
3. signaling diode
4. easy turn on diode
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