Question

(a) An intrinsic semiconductor has mobile holes or electrons at room temperature - Tor F? Select one: O True O False O Choose not to answer (b) The number of mobile electrons and mobile holes are equal in an n-type silicon - Tor F? Select one: O True O False O Choose not to answer (c) Unlike a BT, performance of a MOSFET is not affected by ambient temperature due to its "field-effect - Tor F? Select one: O True O False O Choose not to answer (d) If an non BJT operates in saturation region, the emitter current is the sum of the collector current and the base current - Tor F? Select one: O True O False o Choose not to answer (e) The op-amp circuit shown below is an op-amp differentiator - Tor F? Select one: O True O False O Choose not to answer

Answer 1

a) An Intrinsic Semiconductor is ' Neutral' at Room Temperature. Hence it has Equal No. of Electrons and Holes at Roum Temperature. N00 * True MO b) In an N-Type silicon, the majority charge calliers are Electrons, since it is pentavalent Hence Mobile Elections and Mobile Holes are not equal. * false " Performance of a MOSFET depends on the Ambient Temperature * So, false dy for an npn BJT operates in Saturation region, [Ic= Ict In Imittu current is the sum of the collector current and Base Current * True .

e Given الله له + Assuming two nedes Vx and Vy in the above circuit Applying kll at node Ve. . + Va-Vin . Vx-Vout a C (-5/6) R Here Vy zo since it is connected directly to ground Also, x= Uy as the voltages at the inverting and Non-inverting Terminals should be same. Tue a Vy = 0 volts @ Substituting Eq. © in fq. O; o- Vin Vout C (-1/wc) R * Vout . -R Vin - Cilac) a Vout - Rwe Vin J Vout - Ř cjus leplace Transfelm on both sides Applying {+Sajoy Voll? .-Res! - Vils) The above Equation refers to an *Hence, True Op-Amp Differentiatoo.