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A power transistor is a
b Explanation: It has three layers p-n-p or n-p-n forming two p-n junctions.
b
Explanation: It has three layers p-n-p or n-p-n forming two p-n junctions.
See lessWhich of the following devices does not belong to the transistor family?
c Explanation: GTO is gate turn off transistor, it belongs to the Thyristor family. All the other devices belong to the transistor family.
c
Explanation: GTO is gate turn off transistor, it belongs to the Thyristor family. All the other devices belong to the transistor family.
See lessZener diodes allow a current to flow in the reverse direction, when the
a Explanation: Zener diode has voltage regulating property. When voltage reaches above a certain value (Zener voltage), current starts to flow in the reverse direction.
a
Explanation: Zener diode has voltage regulating property. When voltage reaches above a certain value (Zener voltage), current starts to flow in the reverse direction.
See lessShown below is the diagram of an ideal super diode. When the input voltage Vin is positive, then the output voltage Vout = ?
b Explanation: Input is positive, hence it is amplified by the operational amplifier which switches the diode on. Current flows through the load & because of the feedback, the output voltage is equal to the input voltage.
b
Explanation: Input is positive, hence it is amplified by the operational amplifier which switches the diode on. Current flows through the load & because of the feedback, the output voltage is equal to the input voltage.
See lessIn a certain power electronics application, it is required that the voltage at the load terminals is to be kept within a certain range of voltages only. Among the device listed below, which would be the most ideal choice for this application?
c Explanation: Zener diode is used as a voltage regulating device.
c
Explanation: Zener diode is used as a voltage regulating device.
See lessIn a Schottky diode, the silicon layer acts as a _____________
b Explanation: The metal acts as the anode and the semiconductor as a cathode.
b
Explanation: The metal acts as the anode and the semiconductor as a cathode.
See lessAs compared to a p-n junction device of equal rating, the Schottky diode has
a Explanation: Low reverse voltage rating is the only drawback against a p-n junction diode.
a
Explanation: Low reverse voltage rating is the only drawback against a p-n junction diode.
See lessIf the doping levels of the semiconductor is increased, then the width of the depletion layer
b Explanation: Higher the doping, more the number of charge carrier available to neutralize the opposite charges on the junction.
b
Explanation: Higher the doping, more the number of charge carrier available to neutralize the opposite charges on the junction.
See lessIn a Schottky diode, the aluminum metal acts as a __________
a Explanation: The Al (Metal) always acts as the anode.
a
Explanation: The Al (Metal) always acts as the anode.
See lessSchottky diodes are also called as
b Explanation: Due to the metal used to carry the current, it is also called as a hot carrier diode.
b
Explanation: Due to the metal used to carry the current, it is also called as a hot carrier diode.
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