Instrumentation & Control MCQs

Answers at the end of all questions.
Q1) Which is not an applicable method to detect the presence of flammable gas
A) Point Type IR Detectors
B) Electrochemical sensors
C) Catalytic sensors
D) Open Path IR Detectors

Q2) Following standard defines Procedure Automation for Continuous Process Operations
A) ISA 18.2
B) None of the answers
C) ISA 106
D) ISA 95
  
Q3) Which of the following valve types would be suitable for controlling the flow of a slurry?
A) Double-seated globe
B) Butterfly
C) Diaphragm
D) Knife edge gate
  
Q4) List the device that is not a common output transducer for an electronic pressure transmitter
A) capacitance
B) LVDT
C) strain gage
D) flapper-nozzle
Q5) 2oo2 voting logic in fail-safe mode is following Gate
A) AND
B) XOR
C) OR
D) NAND

Q6) The direct-acting actuator is ________
A) Air to Open type actuator
B) Air to Close type actuator
C) Piston type actuator
D) applicable for the motorized actuator

Q7) Which configuration provides the best protection against nuisance shutdowns?
A) None of the answers
B) 1oo2
C) 2oo2
D) 1oo1


Answers: Q1:B , Q2:C , Q3:B , Q4:D , Q5:A , Q6:B , Q7:C

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