Polarisation of light forms the working principle of a______________?

A. Air to open valve with the controller direct acting
B. Air to close valve with the controller indirect acting
C. Air to open valve with the controller indirect acting
D. Air to close valve with the controller direct acting

A. Variable flow area
B. Rotation of a turbine
C. Pressure drop across a nozzle
D. Pressure at a stagnation point

A. Strips
B. Bars
C. Wires
D. Beads

A. Dead
B. Integral
C. Derivative
D. None of these

A. Liquid temperatures only
B. Very high temperatures only
C. Very low temperatures only
D. Both high and low temperatures

A. Mcleod
B. Pirani
C. Thermocouple
D. None of these