Description : Forward current through a semi-conductor diode circuit is due to ________ (a) Minority carriers (b) majority carriers (c) holes (d) electrons
Last Answer : (b) majority carriers
Description : Minority carriers in N-type are a) Holes b) Electrons c) Neutrons d) Protons
Last Answer : a) Holes
Description : Barrier potential in a P-N junction is caused by (A) Thermally generated electrons and holes. (B) Diffusion of majority carriers across the junction. (C) Migration of minority carriers across the junction. (D) Flow of drift current.
Last Answer : (B) Diffusion of majority carriers across the junction.
Description : N-type region has majority charge carriers as (a) Holes (b) protons (c) neutrons (d) electrons
Last Answer : (d) electrons
Description : The majority carriers in N-type substance are a) Holes b) Protons c) Neutrons d) Electrons
Last Answer : d) Electrons
Description : When a reverse bias is applied to a diode, it will a. Raise the potential barrier b. Lower the potential barrier c. Increases the majority-carrier a current greatly d. None of these
Last Answer : a. Raise the potential barrier
Description : In p-type semiconductor the majority carriers are (A) holes. (B) electrons. (C) positive ions. (D) negative ions.
Last Answer : (A) holes.
Description : On increasing the reverse bias to a large value in a p-n junction diode current (a) Increases slowly (b) Remains fixed (c) Suddenly increases (d) Decreases slowly
Last Answer : (c) Suddenly increases
Description : In a semiconductor diode, p-side is earthed and to n-side is applied a potential of -2 volt; the diode shall (a) Conduct (b) Not conduct (c) Conduct partially (d) Break down
Last Answer : a) Conduct
Description : When using an ohmmeter to test a semiconductor diode, you find a low resistance in both the forward and reverse bias directions. This indicates that the diode has a/an ____________. A. open B. short C. good resistive quality D. good capacitive quality
Last Answer : Answer: B
Description : What is the name given to a piece of pure semiconductor material that has an equal number of electrons and holes?
Last Answer : Intrinsic.
Description : In the N-type semiconductor the charge carries are a) Holes b) Neutrons c) Protons d) Electrons
Description : In a P-type semiconductor the charge carriers are a) Electrons b) Holes c) Protons d) Neutrons
Last Answer : b) Holes
Description : Addition of trivalent impurity to a semiconductor creates many (A) holes. (B) free electrons. (C) valance electrons. (D) bound electrons.
Last Answer : (B) free electrons.
Description : A P-type semiconductor is doped to produce one of the following. Will it produce: w) both holes and electrons x) positive electrons y) negative electrons z) holes
Last Answer : ANSWER: Z -- HOLES
Description : The majority charge carriers in p-type silicon are (A) Free electrons (B) Ions (C) Conduction electrons (D) Holes
Last Answer : Option D
Description : In N-type semiconductors the majority of the carriers are: w) holes x) electrons y) protons z) neutrons
Last Answer : ANSWER: X -- ELECTRONS
Description : How do you test reverse power trip, high current trip, preferential trip?
Last Answer : Reverse power trip - refer answer for question 11. Also ask E/O. High current (over load trip) - Set your overload relay high current trip setting to say 75% of the rated current. Run the ... loads to overload the generator. Preferential trip will trip all the non-critical loads. Also ask E/O.
Description : Why is this reverse power used instead of reverse current in alternators?
Last Answer : It is extremely difficult to detect reverse current with an alternating current system, reverse power can be detected and protection can be provided by reverse power relay.
Description : In the reverse biased p-n junction, the current is of the order of (a) Ampere (b) Milliampere (c) Microampere (d) Nano-ampere
Last Answer : (d) Nano-ampere
Description : The region consisting of holes and electrons near the p-n junction of a diode is (A) diffusion region (B) neutral zone (C) recombination region (D) depletion region
Last Answer : The region consisting of holes and electrons in a pn junction is called depletion layer.The reason being both holes and electrons have neutrolyzed at the junction thus it is depleated with delocalized charge carriers.
Description : A modern power semiconductor device IGBT is combines the characteristics of a) BJT and MOSFET b) FCT and GTO c) SCR and MOSFET d) SCR and BJT
Last Answer : Ans: BJT and MOSFET
Description : Semiconductor germanium and silicon are (a) Pentavalent (b) trivalent (c) divalent (d) tetravalent
Last Answer : (d) tetravalent
Description : A doped semiconductor is called : a) Extrinsic b) Intrinsic c) Insulator d) Conductor
Last Answer : b) Intrinsic
Description : A semiconductor formed by addition of trivalent impurity is : a) P–Type b) N–Type c) Q–type d) M–Type
Last Answer : d) M–Type
Description : The process of addition of impurity in pure semiconductor is : a) Doping b) Radiating c) Mixing d) Insulating
Last Answer : d) Insulating
Last Answer : When the light falling on a photodiode increases, the reverse minority current increases.
Description : A part of transistor which is heavily doped to produce large number of majority carriers is (a) Emitter (b) Base (c) Collector (d) any of above
Last Answer : (a) Emitter
Description : What is a zener diode?
Last Answer : A zener diode is a special kind of diode which allows current to flow in the forward direction in the same manner as an ideal diode, but will also permit it to flow in the reverse direction when ... is above a certain value known as the breakdown voltage, "zener knee voltage" or "zener voltage."
Description : What is a diode?
Last Answer : In electronics, a diode is a two-terminal electronic component with asymmetric transfer characteristic, with low (ideally zero) resistance to current flow in one direction, and high (ideally ... a crystalline piece of semiconductor material with a p-n junction connected to two electrical terminals
Description : A device based on photo electric effect is called a) Photo sensitive b) Photo diode c) Photo synthesis d) Photo cell
Last Answer : d) Photo cell
Description : A light emitting diode emits light only when (a) Reversed biased (b) forward biased (c) unbiased (d) none
Last Answer : (b) forward biased
Description : Which is the most important building block of electronic devices? (a) Diode (b) p-n junction (c) transistor (d) rectifier
Last Answer : b) p-n junction
Description : A circuit which develops voltage across the horizontal deflection plates is known as a) Time base generator b) Electron gun c) Thermionic diode d) Zener diode
Last Answer : a) Time base generator
Description : Alabama closing DMV in ten counties with eight being majority, minority based. How is this not voter suppression?
Last Answer : answer:It is clearly voter suppression. This isn't really new. But it is pretty awesome that they are no longer trying to hide it. If my sisters twins have taught me anything it is ... 't do something it becomes really important and they will crawl through razor blades to do it. bizzarostriesand
Description : Should the minority be responsible for speaking out against prejudice, or should the majority be responsible to listen up?
Last Answer : Both and neither. It’s everyone’s responsibility to think with their brains and maybe do a little research. It’s a shame people keep putting this off on each other.
Description : To people of ethnic minorities (or any other minority) who "pass" as the majority, how does this affect your life?
Last Answer : “be it ethnic or any other ” Would that not apply to everyone?
Description : Explain how did the white minority and the black majority agree to draw up a common constitution for South Africa. -Civics 9th
Last Answer : The white minority and the black majority agreed to draw up a common constitution for South Africa in the following ways.The white regime changed its repressive policies and repealed its ... solution irrespective of the differences and whatever they had done or represented in the past.
Description : What do you call the experience of being a member of a cultural minority while surrounded by a different majority culture?
Last Answer : Need answer
Description : Which of the following terms refers to Leininger's description of the learned and transmitted knowledge about values, beliefs, rules of behavior, and lifestyle practices that guide a ... transmitted characteristics. d) Subculture Subculture refers to a group that functions within a culture.
Last Answer : a) Culture Leininger was the founder of the specialty called transcultural nursing and advocated culturally competent nursing care.
Description : Having less than 50 percent of equity share in an international venture is calleda) Minority interest b) Joint venture c) Majority interest d) Exporting
Last Answer : a) Minority interest
Description : In the USA, executive and legislative officials are elected by a __________ of citizens. (A) majority rule (B) plurality vote (C) proportional representation (D) minority right
Last Answer : (B) plurality vote
Description : How do you test reverse power trip?
Last Answer : When two generators are running in parallel and one generator can carry the load, reverse power trip can be tested by load shifting using governor control. When the load has shifted sufficiently and the off ... (using the test push button on the relay) to see if it initiates a trip signal.
Description : How is the protection against reverse power given?
Last Answer : Reverse power protection is used for anti-motoring. This function is used for protection of prime mover not generator. It can cut-off the fuel supply and stop the prime mover.
Description : What is the harm if reverse power flows?
Last Answer : Assume that the generator normally produces an amount of power equal to P, and that when operating as a motor, it will absorb a similar amount, P. Therefore, the net effect on the grid will ... change on the grid. There could be prime mover damage in some instances (especially steam turbines).
Description : When does Reverse power flow?
Last Answer : Situation of a generator is feeding a system through switchgear having several generators connected in parallel with this generator. The flow of current, when the system is running normally, is from the ... minor to extreme in the event of a complete mechanical failure of the generator which fails.
Description : The reverse process of photo-electric effect is called: a) Annihilation of matter b) Compton effect c) Pair production d) X-rays
Last Answer : d) X-rays
Description : Depletion region of a junction is formed _________ (a) during the manufacturing process (b) under forward bias (c) under reverse bias (d) when temperature varies
Last Answer : (a) during the manufacturing process
Description : The potential difference set up across the depletion region is called (a) Absolute potential (b) neutral potential (c) reverse potential (d) potential barrier
Last Answer : (d) potential barrier
Description : For normal operation of a transistor, the collector base junction is kept (a) Unbiased (b) forward biased (c) reverse biased (d) none
Last Answer : (c) reverse biased