Automated F

Question 1

sensing device that detects the condition of the process variable?

Answer 1

Primary Element

Question 2

2 pneumatically controlled valves if downward caused the valve to open which valve will cause a fail closed condition when signals lost?

Answer 2

Left one the one that has the red in the spring

Question 3

Operate by sending sound waves towards the the target and measuring the time it takes for the pulses to bounce back?

Answer 3

Ultra sonic sensor

Question 4

Trasnducer part labelled A what is it? Squigly lined ogbject

Answer 4

Bellows

Question 5

How is an inductive proximity sensor actuated?

Answer 5

by a metal object

Question 6

Non contact temperature detector that can measure the infared radiation emitted from an object mesure temps from remote location. infared radiation focussed onto thermopile or on LDR?

Answer 6

Pyrometer

Question 7

This thermocouple when heated produces what? Wire A Wire B and a stainless steal sheath type thermocouple

Answer 7

produces a small dc voltage

Question 8

what does signal conditioning involve?

Answer 8

converting input and output signals to a usable form

Question 9

Force applied to strain gauge mounted on tube sensor causes it to bend and change its?

Answer 9

Resistance

Question 10

strain gauge under tension has its resistance affected according to the following rellationship: R=(KL)/cma

Answer 10

increse due to decreased cross sectional areas and increased length

Question 11

water density is 0.433 psi/ft what is the pressure if the level is 8.5ft in a 9ft tank?

Answer 11

0.433*8.5=3.68 psi

Question 12

shaft encoder coupled to the output dhaft of an electric motor the output of the shaft encoder is connected to a positioner controller. which specification detail for the encoder will determine the resolution of the positioning system?

Answer 12

pulses per revolutin

Question 13

solenoid valve can control?

Answer 13

water flow, air flow, oil flow

Question 14

new steady state condition occurs how many time constants after a controlled variable is exposed to an energy change?

Answer 14

5

Question 15

What is the thing that is sent to the final control element?

Answer 15

Control signal

Question 16

P&ID diagram the instrument tag FT stands for what?

Answer 16

flow transmitter

Question 17

What is dotted line?

Answer 17

Electrical signal

Question 18

compared to open loop system, closed loop control systems require?

Answer 18

require feedback concerning the status of the process

Question 19

What is the essential difference between an open loop and a closed loop control system?

Answer 19

Closed loop system incorporate feedback

Question 20

2 ingredients are added together, processed and then stored within an industrial bakery this is an example of?

Answer 20

Batch work

Question 21

what type of maintenance techs are becoming more popular in industry due to their flexibility and cost effectiveness?

Answer 21

multi skilled