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A Schottky diode _____
Answer: b Explanation: Due to the metal-silicon junction there are no stored charges hence, no reverse recovery time, due to which the switching is faster.
Answer: b
See lessExplanation: Due to the metal-silicon junction there are no stored charges hence, no
reverse recovery time, due to which the switching is faster.
Which of the following diodes uses a metal-semiconductor junction?
Answer: c Explanation: Schottky diode uses a Al-Semiconductor junction.
Answer: c
See lessExplanation: Schottky diode uses a Al-Semiconductor junction.
In order to reduce the reverse recovery time of the diodes, __________ is carried out.
Answer: b Explanation: Platinum & gold doping improves the performance of the devices.
Answer: b
See lessExplanation: Platinum & gold doping improves the performance of the devices.
Shown below is the diagram of an ideal super diode. When the input voltage Vin is negative, then the output voltage Vout = ?
Answer: c Explanation: When the input voltage is negative, there would be a negative voltage on the diode so it works like an open circuit. Hence no current flows through the load and Vout is zero.
Answer: c
See lessExplanation: When the input voltage is negative, there would be a negative voltage on
the diode so it works like an open circuit. Hence no current flows through the load and
Vout is zero.
.In the equilibrium state the barrier, potential across a unbiased germanium diode is __________
Answer: a Explanation: Barrier potential is due to the charges that establish an electric field across the two junctions
Answer: a
See lessExplanation: Barrier potential is due to the charges that establish an electric field across
the two junctions
In the equilibrium state, the barrier potential across a unbiased silicon diode is _________
Answer: b Explanation: Barrier potential is due to the charges that establish an electric field across the two junctions
Answer: b
See lessExplanation: Barrier potential is due to the charges that establish an electric field across
the two junctions
When the p-n junction diode is forward biased, the width of the depletion region __________
Answer: b Explanation: When forward biased depletion layer decreases & finally it collapses to allow the current flow
Answer: b
See lessExplanation: When forward biased depletion layer decreases & finally it collapses to
allow the current flow
.In an AC-DC converter, a diode might be used as a
Answer: c Explanation: In converters diodes are used to feed the energy back to the load in case of an inductive load.
Answer: c
See lessExplanation: In converters diodes are used to feed the energy back to the load in case of
an inductive load.
The power loss in which of the following cases would be the maximum?
Answer: b Explanation: P=VI Hence, it would be maximum when both V and I are maximum.
Answer: b
See lessExplanation: P=VI Hence, it would be maximum when both V and I are maximum.
A power diode with small softness factor (S-factor) has
Answer: b Explanation: Peak reverse current is independent of S-factor smaller the value of S- factor larger the oscillatory over voltage.
Answer: b
See lessExplanation: Peak reverse current is independent of S-factor smaller the value of S-
factor larger the oscillatory over voltage.