A) The dynamic error in a temperature measurement using a thermocouple is 70% at 3 s after an input step change in temperature. Determine the magnitude ratio of the thermocouple's response at 1 s.
B) What is the magnitude ratio that corresponds to -6 dB?
C) A large thermocouple has a time constant of 10 s. It is subjected to a sinusoidal variation in temperature at a cyclic frequency of 1/(2pi) Hz. THe phase lag, in degrees, is approximately
(a) -.0707,
(b) -3,
(c) -45, or
(d) -85.