Industrial Instrumentation Automation 1

Which of the below states correctly the function of control valve?

• 1) Stopping and starting flow

  2) Throttling fluid flow

  3) Controlling direction of flow

• 1) Regulating downstream system or process pressure

  2) To pump fluid through

  3) To regulate temperature

• 1) To increase pressure

  2) For safe functioning of the plant

  3) Relief overpressure

• 1) To act as a sensor

  2) For on and off purposes

  3) Control direction of fluid flow

What are the THREE mechanical motions which control valves are classified under?

(a)  

Name the valve shown in the picture & state under which motion classification is this valve?

(a)  

What is the name of the valve shown & state which motion classification is this valve.

(a)  

What is the valve shown in the picture & state its motion classification

(a)  

What are the three modes of actuator operations?

(a)  

What is the range of Electrical signals that control elements operate in?

• 20-30mA

• 4-20mA

• 3-15mA

• 1-10mA

What is the range of PNEUMATIC signals that control elements operate in?

• 5-15psig

• 4-20psig

• 3-15psig

• 1-10psig