Common Interview Questions: Entry Level Instrumentation


Que. : Draw an electronic two wire system control loop.
Que. : What are Intrinsically safe system ?
Que. : What does a transmitter output start from 3-15 psi or (0.2 - 1 Kg/Cm2) or 4 - 20 ma. etc. ?
Que. : What is force balance and motions balance principle ?
Que. : What is Process
Que. : What is Manipulated variable , Error and controlled variable
Que. : Define control agent, actuating signal, Deviation, Offset, reference input, Setpoint
Que. : Define Accuracy, attenuation, deadtime,drift, error , Span error,Zero error , static gain, Hysterisis,Interference,
common mode interference,Normal mode interference, Linearity, Rang, Repeatability, Reproducability,response, Signal to Noise ratio,
time constant, Span, Zeroshift


What is the meaning of calibration?

Calibration is the comparing of device against an equal or better standard.


What is the meaning of DEADTIME?

DEAD TIME, is caused when there is time interval between the initiation of some action and the detection of the action


Kindly share the powerful Answers for above questions?