An intrinsic silicon sample has 1 million free electrons at room temperature. As the temperature is increased The number of free electrons and holes increase by the same amount The number of free electrons increases The number of free electrons increases but the number of holes decreases The number of free electrons and holes increase but not by the same amount TRUE ANSWER : ? YOUR ANSWER : ?
In a bipolar transistor, the base collector junction has Zero or forward bias Forward bias Zero bias Reverse bias TRUE ANSWER : ? YOUR ANSWER : ?
Fermi level is the amount of energy in which None of these A hole can have at room temperature Must be given to an electron move to conduction band An electron can have at room temperature TRUE ANSWER : ? YOUR ANSWER : ?
Work function is the maximum energy required by the fastest electron at 0 K to escape from the metal surface. True False TRUE ANSWER : ? YOUR ANSWER : ?
The amount of photoelectric emission current depends on None of these Frequency of incident radiation Both frequency and intensity of incident radiation Intensity of incident radiation TRUE ANSWER : ? YOUR ANSWER : ?
In a semiconductor diode, the barrier offers opposition to Majority as well as minority carriers in both regions Holes in P-region only Majority carriers in both regions Free electrons in N-region only TRUE ANSWER : ? YOUR ANSWER : ?
When avalanche breakdown occurs covalent bonds are not affected. True False TRUE ANSWER : ? YOUR ANSWER : ?
For a P-N diode, the number of minority carriers crossing the junction depends on Rate of thermal generation of electron hole pairs None of these Forward bias voltage Potential barrier TRUE ANSWER : ? YOUR ANSWER : ?
Assertion (A): A JFET can be used as a current source.Reason (R): In beyond pinch off region the current in JFET is nearly constant. A is false but R is true A is true but R is false Both A and R are true but R is not a correct explanation of A Both A and R are true and R is correct explanation of A TRUE ANSWER : ? YOUR ANSWER : ?
For a NPN bipolar transistor, what is the main stream of current in the base region? Diffusion of electrons Drift of electrons Diffusion of holes Drift of holes TRUE ANSWER : ? YOUR ANSWER : ?