Answer to Question #274837 in Electrical Engineering for MD HUMAYAN KABIR

Question

1. Multiple Choice (Choose the ONE answer that best fits the question/statement.) 

(1) When the “n­factor” of a diode ID = I0(eqV/nkT −1) is 2 at low forward bias voltages, 

what do we suspect? ( ).

A. That the current is dominated by high level injection in the lightly doped, quasi-

neutral region. 

B. That the current is dominated Zener tunneling 

C. That the current is dominated by recombination in the space charge region. 

D. That the current is dominated by generation in the space charge region. 

(2) How does series resistance affect on diode characteristic? ( ). 

A. It leads to the sharp increase of the current 

B. The direct current, depending on the voltage, increases slower than exponential 

law

C. V-I characteristic, starting with the smallest value of voltage, becomes ohmic

D. Negative differential conductance region appears on V-I characteristic of the diode

Answer 1

1) C. That the current is dominated by recombination in the space charge region. 

2) B. The direct current, depending on the voltage, increases slower than exponential 

law