question_answer

Fill in the blanks using the word(s) from the list appended with each statement: (i) When a p-n junction is forward biased, then the motion of charge carriers across the barrier is due to ___ (drift, diffusion) and when it is reverse biased, then the motion of charge   carriers   is   due   to   ___ (drift, diffusion). (ii) An ideal p-n junction diode conducts, when ___ biased and does not conduct, when ___ biased, (forward, reverse; forward, reverse) (iii) The base of a transistor is always ___ and ___ doped, compared to the emitter and collector, (thinner, thicker; lightly, heavily) (iv) In a transistor, as long as \[{{V}_{CE}}>>{{V}_{BE}}\] the \[{{I}_{C}}\] is almost ___ of \[{{V}_{CE}}\].  (independent, proportional) (v) For using a transistor as an amplifier, the base-emitter junction is ___ biased and the base collector junction is ___ biased. (forward, reverse; forward, reverse) (vi) An oscillator is nothing but an amplifier ___ feedback, (with, without) (vii) In a digital circuit, diodes and transistors are operated by a \[\mathbf{5}\text{ }\mathbf{V}\] supply. The 1 state will correspond to ___ (\[\mathbf{0}\text{ }\mathbf{V},\text{ }\mathbf{5}\text{ }\mathbf{V}\]) and the 0 state to ___ (\[\mathbf{0}\text{ }\mathbf{V},\text{ }\mathbf{5}\text{ }\mathbf{V}\]). (viii) Digital circuits can be made by repetitive use of ___ gates. (AND, NAND) (ix) An output 1 is obtained in an AND gate, when ___ of the input terminals are at 1 state, (either, both) (x) An output 1 is obtained in a NOR gate, when ___ input terminals are at 0 state, (either, both)

Answer:

                    (i) diffusion, drift, (ii) forward, reverse, (iii) thinner, lightly, (iv) independent, (v) forward, reverse, (vi) with, (vii) 5 V, 0 V, (viii) NAND, (i\[x\]) both, (\[x\]) both.