In the transistor schematic symbol, the arrow______________?
(A) is located on the emitter
(B) is located on the base
(C) is locate on the collector
(D) points form north to south
Which one of the following is not a donor impurity ?
(A) antimony
(B) phosphorus
(C) aluminium
(D) arsenic
Forward current through a semi conductor diode circuit is due to____________?
(A) minority carriers
(B) majority carriers
(C) holes
(D) electron
Acceptor and donor impurities donate______________?
(A) n-carriers only
(B) p-carriers only
(C) p-carriers and n-carriers respectively
(D) n-carriers and p-carriers respectively
The electronic circuits which implement the various logic operations are called_____________?
(A) Logic gates
(B) Boolean algebra
(C) Amplifier gain
(D) Logic functions
In forward bias the width of potential barrier_____________?
(A) Increases
(B) Decreases
(C) Remains same
(D) No effect
To obtain a p-type semi-conductor Si Crystal must be doped with foreign atoms whose valency is_____________?
(A) 2
(B) 3
(C) 4
(D) 5
The working of transistor as amplifier is similar to________________?
(A) Step up transformer
(B) Step down transformer
(C) Three diodes in common
(D) Triode vacuum tube
An OP-AMP comparator is a circuit that compares the signal voltage on one of its inputs with a ______________?
(A) Non-inverting voltage at output
(B) Reference voltage on the other
(C) Virtual input
(D) Output
Non-inverting amplifier circuits have____________?
(A) A very high input impedance
(B) A very low input impedance
(C) A low output impedance
(D) None of the above