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Measurements and Instrumentation - Engineering

Q1:

Consider the following statements: In a differential amplifier using JFET, the differential output offset is due to
  1. mismatch between FET parameters
  2. difference in values of resistances used in circuit
  3. variation in supply voltage.
Of the statements, the correct statements are

A 1 and 2

B 1, 2, 3

C 2, 3

D 1, 3

ANS:A - 1 and 2

Variation in supply voltage affects both amplifiers equally.