नियंत्रण वाल्व में स्प्रिंग का मूल कार्य क्या है?
What is the basic function of the spring in a control valve?
A
Characterize flow
B
Oppose the diaphragm to position the valve according to signal pressure
C
Close the valve if air failure occurs
D
Open the valve if air failure occurs
Explanation
Correct Answer: B) Oppose the diaphragm to position the valve according to signal pressure