Calibration and fault finding of current to pneumatic converter for flow control system

What will be the output of any Flapper and Nozzle sensor?
When the reference junction is the same temperature as the measurement junction in a thermocouple circuit, the output voltage (measured by the sensing instrument) is:
The instruments used for the measurement of pressure is/are
Which of the following is not a type of pressure sensing element?
If a force of 3400 pounds is applied to a circular piston 2 inches in diameter, calculate the fluid pressure working against the piston.