Question 1

Draw a pressure control loop.

Accepted Answer

The answer of Draw a pressure control loop....

Question 2

In a process control loop, a(n) ______________ can be transmitted over the longest distance.

Accepted Answer

A)  pneumatic signal 
B)  electrical signal 
C)  hydraulic signal 
D)  pneumatic - electrical signal

Question 3

A level measurement device attached to a vessel that allows an operator to see the corresponding liquid level:

Accepted Answer

A)  sight glass gauge 
B)  rotameter 
C)  RTD 
D)  transmitter

Question 4

A control loop is:

Accepted Answer

A)  a collection of instruments that work together to automatically control a process. 
B)  an electronic process flow diagram used to automatically control a process. 
C)  an electronic system that controls and monitors process variables. 
D)  a set of devices used to transmit one form of energy into another.

Question 5

Level measurements can be listed as continuous level measurement and ______________________________ .

Accepted Answer

A)  single-point level detection 
B)  multi-point level detection 
C)  duplex conductivity detection 
D)  a & b

Question 6

A circle with a line drawn horizontally across it with symbols above and below the line indicate:

Accepted Answer

A)  field mounted 
B)  electrical 
C)  mounted in a remote location 
D)  pneumatic

Question 7

A transmitter is:

Accepted Answer

A)  a device used to sense a process variable and produce a signal that is sent to a control valve 
B)  a subsystem of a supervisory control system 
C)  a device used to sense a process variable and produce a signal that is sent to a controller. 
D)  a device used to transmit one form of energy into another; typically pneumatic to electrical or electrical to pneumatic.

Question 8

An oval gear meter roughly resembles a:

Accepted Answer

A)  lobe pump 
B)  screw pump 
C)  vane pump 
D)  liquid ring compressor

Question 9

______________ signals are usually transmitted in milliamperes.

Accepted Answer

A)  pneumatic 
B)  electrical 
C)  hydraulic 
D)  pneumatic - electrical

Question 10

The symbol "FI" indicates:

Accepted Answer

A)  flow instrument 
B)  flow indicator 
C)  pneumatic and electrical 
D)  float instrument

Question 11

A flow meter that allows fluid to move through a clear tube that has a ball or float in it.

Accepted Answer

A)  sight glass gauge 
B)  rotameter 
C)  RTD 
D)  transmitter

Question 12

A hook shaped, thin walled tube attached to a mechanical linkage that expands and contracts in response to pressure changes:

Accepted Answer

A)  spiral 
B)  helix 
C)  bourdon tube 
D)  bellows pressure element

Question 13

The primary elements used to detect temperature include all of the following except:

Accepted Answer

A)  thermocouple 
B)  resistance bulb 
C)  capillary tubing 
D)  helical bourdon

Question 14

The symbol "PA" indicate:

Accepted Answer

A)  process alarm 
B)  pressure alarm 
C)  process analyzer 
D)  pressure analyzer

Question 15

A process variable is best described as:

Accepted Answer

A)  transmitter signal to an analytical controller 
B)  a process condition that is subject to change. 
C)  a variable process condition that is automated so fluctuations are eliminated. 
D)  the lag time in a pneumatic control loop

Question 16

The primary elements used to detect flow include all of the following except:

Accepted Answer

A)  orifice plate 
B)  venturi tube 
C)  flow nozzle 
D)  oval gear 
E)  weir and level measuring device
F) thermal well
G) rotameter

Question 17

A rotameter is composed of all of the following components except:

Accepted Answer

A)  tapered tube 
B)  scale 
C)  upper inlet 
D)  ball or float 
E)  lower inlet

Question 18

A transducer is:

Accepted Answer