Download Aptitude Crack
img not found img not found

Measurements and Instrumentation - Engineering

Q1:

Which of the following closely represents the resistance-temperature characteristics of thermistor?

A RT = a R0 eb/t

B RT = a R0 E-b/t

C RT = - a R0 e-b/t

D RT = - R0 eb/t

ANS:A - RT = a R0 eb/t

The answer should be (b) as nowhere in the question it is mentioned that a and b are positive or negative. And also a thermistor has highly non-linear positive characteristics. So it should be a negative power of e.