Semiconductor Electronics Materials Devices And Simple Circuits

An evanescent mode occurs when

A polar diagram, which represents a lag network, is

In a silicon sample doped with N-type impurities, the Fermi level is situated 0.35 eV away from the intrinsic Fermi level . If the energy bandgap of silicon at 300 K is considered to be 1.10 eV, what is the separation between the Fermi level and the valence band edge ?

Which statements are true?
A. Electric field, , in a semiconductor is directly proportional to the slope of the intrinsic Fermi level.
B. Continuity equation is a mathematical representation of Fermi-Dirac distribution function.
C. Depletion width in a P-N junction is equal to its Debye length.
D. Diffusion current density for holes is equal to
Choose the correct answer from the options given below.

Match List I with List II

List I (Circuits)		List II (Components)
A	In an ideal op-amp integrator	I	A parallel RLC network in the feedback path
B	In an ideal op-amp differentiator	II	An E-MOSFET is used that work as switch
C	In an op-amp sample and hold circuit	III	A capacitor is in feedback path
D	In an op-amp peaking amplifier	IV	A resistor is in feedback path

Choose the correct answer from the options given below:

Given below are two statements:
Statement-I: Velocity saturation in silicon occurs at high electric fields.
Statement-II : Mobilities due to two scattering mechanisms (μ and μ2) add up inversely as
In the light of the above statements, choose the correct answer from the options given below.

Given below are two statements :
Statement-I: The model has advantage that the parameters are defined by the actual operating conditions.
Statement-II: The parameters of the hybrid equivalent circuit are defined in general terms for any operating conditions.
In the light of the above statements, choose the correct answer from the options given below.