Choose the correct circuit which can achieve the bridge balance :
1. 2.
3. 4.
Subtopic:  PN junction |
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Zener diode works:
1. in forward bias only.
2. in reverse bias only.
3. as a voltage regulator in forward bias and as a simple pn junction diode in reverse bias.
4. as a voltage regulator in reverse bias and as a simple pn junction diode in forward bias.
Subtopic:  PN junction |
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In the given circuits (a), (b) and (c), the potential drop across the two \({\mathrm{p\text-n}}\) junctions are equal in: 
        
1. both circuits (a) and (c)
2. circuit (a) only
3. circuit (b) only
4. circuit (c) only
Subtopic:  PN junction |
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The increase in the width of the depletion region in a \(\mathrm{p\text{-}n}\) junction diode is due to:
1. reverse bias only
2. both forward bias and reverse bias
3. increase in forwarding current
4. forward bias only

Subtopic:  PN junction |
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Out of the following which one is a forward-biased diode?

1.  
2.
3.
4.
Subtopic:  PN junction |
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