Deck 1

Question 1

According to a regular preventative maintenance schedule which action should be done to a pneumatic piston actuator?

Answer 1

Replace the O-Rings

Question 2

Which should be done to prevent the hydraulic piston from stroking?

Answer 2

Open the bypass valves

Question 3

Communication driver has stopped on the HMI is the result?

Answer 3

Graphics freeze

Question 4

What must be checked when replacing a defective load cell on a weigh scale?

Answer 4

Load rating and excitation voltage

Question 5

What should be done when calibrating a filled thermal system?

Answer 5

Immersed bulb completely in bath

Question 6

Which method is used to install a conditioned sample system on exhaust gases from a flue stack?

Answer 6

Use a small 1/4 inch or less diameter sample tube providing filtration upstream of an analyzer, and a vacuum pump located downstream of the analyzer

Question 7

What should be done when modifying a computer program?

Answer 7

Back up original program, make changes, verify changes and save changes

Question 8

A density is calibrated wet into a fluid with a specific gravity range of 0.7-1.2, what will have the greatest effect on the density calibration?

Answer 8

The temperature of the fluid used for calibration

Question 9

Which steps are required when changing the flashing module of an enunciator panel?

Answer 9

Alert operator, change module, verify operation, file report

Question 10

Which actuator is installed on a 4 inch globe valve?

Answer 10

Diaphragm reciprocating

Question 11

An electronic weight measuring system uses a linear variable differential transformer (LVDT), output to indicate the weight of the can, what has to be done to recalibrate the instrument?

Answer 11

Recenter the core in the LVDT

Question 12

A spring diaphragm actuator has stopped working on inspection it is found that the yoke and dome is badly corroded with nitric acid. What’s done to correct the problem?

Answer 12

Replace the actuator

Question 13

Which diagram illustrates a functional start/stop PLC program with both the start and stop buttons are normally open (NO) momentary type?

Answer 13

C

Question 14

What should be done if a spring diaphragm actuator does not provide the travel expected?

Answer 14

Check the spring

Question 15

A hydrogen sulphide H2S gas detector has a range of 0-60ppm and an output range of 0-175mV. What would be the output voltage for an alarm point of 20ppm?

Answer 15

20ppm/60ppm=0.3333x175mV=58.3mV