Q1.In the Op-Amp circuit shown, assume that the diode current follows the
equation I = Ise P(V VT). For Vi = V, V = V, and for Vi = V, V = V. The relationship between V and V is
Answer : Option DExplaination / Solution:
Here the inverting terminal is at virtual ground and the current in resistor and
diode current is equal i.e.
Q6.The electron and hole concentrations in an intrinsic semiconductor are ni per cm3 at 300 K. Now, if acceptor impurities are introduced with a concentration
of NA per cm3
(where NA >> ni , the electron concentration per cm3 at 300 K
will be
Answer : Option DExplaination / Solution:
As per mass action law
Q9.X = and Y = are two 5-bit binary numbers represented in two’s complement format. The sum of X and Y represented in two’s complement format using 6 bits is
Answer : Option CExplaination / Solution:
MSB of Y is 1, thus it is negative number and X is positive number