1
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
For small signal a.c. operation, a practical forward biased diode can be modeled as
A
a resistance and a capacitance in series
B
an ideal diode and resistance in parallel
C
a resistance and an ideal diode in series
D
a resistance
2
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The static characteristic of an adequately forward biased p-n junction is a straight line, if the plot is of
A
log I vs. log V
B
log I vs. V
C
I vs. log V
D
I vs. V
3
GATE ECE 1995
MCQ (Single Correct Answer)
+1
-0.3
The diffusion potential across a P-N junction
A
decreases with increasing doping concentration
B
increases with decreasing band gap
C
does not depend on doping concentration
D
increases with increase in doping concentrations
4
GATE ECE 1995
MCQ (Single Correct Answer)
+1
-0.3
A zener diode works on the principle of
A
tunneling of charge carriers across the junction
B
thermo ionic emission
C
diffusion of charge carriers across the junction
D
hopping of charge carriers across the junction
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