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The V-I Characteristics of the diode lie in the a) 1st & 2nd quadrant b) 1st & 3rd quadrant c) 1st & 4th quadrant d) Only in the 1st quadran
Answer: b Explanation: First in the forward region & Third in the reverse biased mode.
Answer: b
Explanation: First in the forward region & Third in the reverse biased mode.
See lessPower diode is __________ a) a three terminal semiconductor device b) a two terminal semiconductor device c) a four terminal semiconductor device d) a three terminal analog device
Answer: b Explanation: It has two terminals anode and cathode same as that of a ordinary diode. Infact, a power diode is nothing but a signal diode with a extra layer.
Answer: b
Explanation: It has two terminals anode and cathode same as that of a ordinary diode. Infact, a power diode is nothing but a signal diode with a extra layer.
See lessTo make a signal diode suitable for high current & high voltage carrying applications with minimum losses, ________ a) a lightly doped n layer is grown between the two p & n layers b) a heavily doped n layer is grown between the two p & n layers c) a lightly doped p layer is grown between the two p & n layers d) a heavily doped player is grown between the two p & n layers
Answer: a Explanation: The above process simply the one used to manufacture power diodes.
Answer: a
Explanation: The above process simply the one used to manufacture power diodes.
See lessAn ideal power diode must have a) low forward current carrying capacity b) large reverse breakdown voltage c) high ohmic junction resistance d) high reverse recovery time
Answer: b Explanation: Large reverse breakdown voltage is desirable whereas others will increases the losses
Answer: b
Explanation: Large reverse breakdown voltage is desirable whereas others will increases the losses
See lessWhich of the following is true in case of an unbiased p-n junction diode? a) Diffusion does not take place b) Diffusion of electrons & holes goes on infinitely c) There is zero electrical potential across the junctions d) Charges establish an electric field across the junctions
Answer: d Explanation: A potential difference is established across the junctions due to recombination of holes & electrons. This growing filed (barrier potential) stops the further diffusion.
Answer: d
Explanation: A potential difference is established across the junctions due to recombination of holes & electrons. This growing filed (barrier potential) stops the further diffusion.
See lessWhen a physical contact between a p-region & n-region is established which of the following is most likely to take place? a) Electrons from N-region diffuse to P-region b) Holes from P-region diffuse to N-region c) Both of the above mentioned statements are true d) Nothing will happen
Answer: c Explanation: When p & n region come together diffusion takes places & a depletion region is established with opposite charges on both the sides of the junction.
Answer: c
Explanation: When p & n region come together diffusion takes places & a depletion
region is established with opposite charges on both the sides of the junction.
See lessIn the p & n regions of the p-n junction the _________ & the ___________ are the minority charge carriers respectively. a) holes, holes b) electrons, electrons c) holes, electrons d) electrons, holes
Answer: d Explanation: Holes are the minority charge carriers in n-type material & vice-versa
Answer: d
Explanation: Holes are the minority charge carriers in n-type material & vice-versa
See lessWhich of the below mentioned statements is false regarding a p-n junction diode? a) Diode are uncontrolled devices b) Diodes are rectifying devices c) Diodes are unidirectional devices d) Diodes have three terminals
Answer: d Explanation: Diode is a two terminal device, anode & cathode are the two terminals
Answer: d
Explanation: Diode is a two terminal device, anode & cathode are the two terminals
See lessThe n-region has a greater concentration of _________ as compared to the pregion in a P-N junction diode. a) holes b) electrons c) both holes & electrons d) phonons
Answer: b Explanation: Electrons are the majority charge carriers in n-type material.
Answer: b
Explanation: Electrons are the majority charge carriers in n-type material.
See lessIn the p & n regions of the p-n junction the _________ & the ___________ are the majority charge carriers respectively. a) holes, holes b) electrons, electrons c) holes, electrons d) electrons, holes
Answer: c Explanation: Holes are the majority charge carriers in p-type material & vice-versa.
Answer: c
Explanation: Holes are the majority charge carriers in p-type material & vice-versa.
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