Ones I Screwed Up

Question 1

What variable is the first affected by the final control element

Answer 1

Manipulated

Question 2

With a thermocouple if the reference and measured junction are at the same temp you would get ____ volts across the thermocouple

Answer 2

0v

Question 3

What is the disadvantage of using a hardware compensated thermocouple transmitter

Answer 3

Only a specific thermocouple type can be used

Question 4

?

Answer 4

Question 5

Is discharge throttling an option for a positive displacement pump?

Answer 5

No

Question 6

10 l of gas expands to 15 l. The original temp was 55 degrees c. What is the new temp?

Answer 6

Question 7

P/I

Answer 7

Question 8

What happens in a steam drum after there is an increase in steam demand?

Answer 8

• pressure drops
• vapor bubbles expand
• level rises

Question 9

What process is used to remove water from natural gas?

Answer 9

Dehydration

Question 10

What has an affinity for acid gasses and is used to sweeten natural gas

Answer 10

Amine

Question 11

After black liquor is burned in the recovery boiler what are the next steps to turn it into white ?

Answer 11

Burned in the recovery boiler. Mixed with lime in a slacker and passed through causticizers

Question 12

How does a boiler system ensure all the gas is burned?

Answer 12

Maintains excess o2 in the air/fuel mixture

Question 13

What is the proper order for actions to be taken in a fire and smoke detection system

Answer 13

1) detect
2) annunciation
3) employ protective measures

Question 14

What prevents the hot catalytic bead in a gas detector from producing explosions?

Answer 14

A flame arrestor

Question 15

What triggers photoelectric smoke detectors to alarm?

Answer 15

Light is scattered and detected by a photo diode

Question 16

During asynchronous transition what bit is sent last?

Answer 16

The most significant

Question 17

A digital transmission is being sent at 9600 bits/sec . How long to transmit 1 bit?

Answer 17

104 micro seconds (us)

Question 18

What setting in a PD controller determines how much faster it will react than a prop only?

Answer 18

Rate

Question 19

This is

Answer 19

Question 20

Buoyant force

Answer 20

Question 21

A drain hole in a concentric orifice plate is to allow

Answer 21

Allow liquid to pass in a gas stream

Question 22

The measuring junction with a thermocouple is e_

Answer 22

EM or the whole thing

Question 23

During what stage of a fire would a cloud chamber detector be triggered

Answer 23

1 / incipient

Question 24

When steam demand drops it will cause the boiler water level to ____

Answer 24

Drop

Question 25

Describe fractionation

Answer 25

Groupings of different substances with similar vapor pressures are removed from specific trays along the column

Question 26

With fractionation the bottom of the tower becomes

Answer 26

The feed for the next tower

Question 27

What can happen if the economizor transfers too much heat from the flu gas to the feed water?

Answer 27

Exhaust condensation

Question 28

What is measured to avoid a centrifugal compressor operating to close to its surge curve?

Answer 28

Diff pressure across the compressor and inlet flow

Question 29

The feed flow in a heat exchanger process decreases this a a ____ disturbance

Answer 29

Load

Question 30

What is the purpose of using the integral part of pid

Answer 30

To remove steady state error during disturbances ie offset

Question 31

A DA proportional controller in auto, has its set point lowered. Its output will

Answer 31

Increase

Question 32

What variable does a transmitter always sense in a loop

Answer 32

The measured variable

Question 33

These are

Answer 33

Question 34

What are the 2 voltage levels in a transistor that define 0 and 1

Answer 34

0v and 5v

Question 35

A capacitor is in a DC cct. How would you describe it after 5 time constants?

Answer 35

It behaves like an open switch

Question 36

What is a series of conventions that govern how a device communicates called

Answer 36

Protocols

Question 37

2 XIC bits connected in parallel would be a ____ gate

Answer 37

Or gate

Question 38

This is a ____ bit

Answer 38

XIC

Question 39

What controll problem can happen when steam header pressure drops due to demand increase

Answer 39

Swell