Configuration of Bourdon spring tube is never made of _____________ shape?

A. 45°
B. -90°
C. -180°
D. -45°

A. Thermocouple
B. Resistance thermometer
C. Mercury in glass thermometer
D. Vapor pressure thermometer

A. Stress
B. Weight
C. Strain
D. Velocity

A. A monotonic increase
B. A monotonic decrease
C. Initially increasing and then decreasing
D. Increasing decreasing and then increasing

A. An isotope
B. Natural gas
C. A solid
D. An alloy

A. Routh test
B. Root locus methods
C. Frequency response methods
D. None of these