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CCST LEVEL 1 > DOMAIN 2 > Flashcards

DOMAIN 2 Flashcards

1
Q

Using the ISA standard for symbols an XV designation on a P&ID represents:

A. An undefined valve
B. A discrete valve
C. A multiplying valve
D. An expansion valve

A

B. A discrete valve

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2
Q

The derivative control mode is:

A. Phase lagging
B. In phase
C. Phase leading
D. Phase leading or lagging depending on the dead time

A

C. Phase leading

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3
Q

Which type of control valve is packless?

A. Globe valve
B. Gate valve
C. Double port globe valve
D. Diaphram valve

A

D. Diaphram valve

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4
Q

A cooling water control valve supplying cooling water to an air compressor should fail in which position?

A. Fail Close
B. Fail Close Drift Open
C. Fail Open Drift Close
D. Fail Open

A

D. Fail Open

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5
Q

Which loop should be tuned first in a cascade loop?

A. The primary loop
B. The outer loop
C. The inner loop
D. Depends on the primary loop process variable (Flow, Level, Pressure, etc.)

A

C. The inner loop

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6
Q

4 to 20 mA signals travel at approximately what speed?

A. Speed of sound
B. Speed of light
C. 768 MPH (1235.976 KPH)
D. Mach 2

A

B. Speed of light

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7
Q

A proportional band of 50% is equal to a gain of?

A. 1
B. 4
C. 2
D. 3

A

C. 2

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8
Q

When performing a commisioning check prior to powering up a new panel in the United States, what color coding should the 120 VAC wiring have?

A. Hot conductor - White or Gray, Neutral - Black or Red, Ground - Green
B. Hot conductor - Black or Red, Neutral - White or Gray, Ground - Green
C. Hot conductor - Blue, Neutral - Brown, Ground - Green
D. Hot conductor - Red, Neutral - Black, Ground - Green

A

B. Hot conductor - Black or Red, Neutral - White or Gray, Ground - Green

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9
Q

What is a Gantt chart?

A. A chart that breaks down project costs
B. A project schedule
C. A pie chart
D. A chart that details all of the Functional Acceptance Check to be completed

A

B. A project schedule

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10
Q

Which of the following statements regarding calibration of instuments is true?

A. The manufacture’s tolerance should never be exceeded
B. The manufacture’s tolerance may be exceeded for non-critical instuments
C. The manufacture’s tolerance may be exceeded after 3 consecutive good calibrations
D. The manufacture’s tolerance may be exceeded if the standard has a TAR of 4:1

A

A. The manufacture’s tolerance should never be exceeded

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11
Q

Which 2 of the 3 control modes (PID) only function while the process is changing (ie. Not at steady state)?

A. Proportional, Integral
B. Integral, Derivative
C. Gain, Integral
D. Proportional, Derivative

A

D. Proportional, Derivative

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12
Q

On/Off Control is best suited for whice type of process?

A. Large capacity system
B. System with a small time constant
C. Small capacity system
D. Fast changing process

A

A. Large capacity system

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13
Q

Which hazard area classification is designated by the statement “Hazardous atmosphere or dust cloud may be present continously or a large percentage of time”?

A.Zone 1, Zone 21
B. Zone 2, Zone 22
C. Zone 0, Zone 20
D. Zone 3, Zone 23

A

C. Zone 0, Zone 20

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14
Q

AS-i is an example of which type network hierarchy?

A. Full Service Control Bus
B. Device Bus
C. Bit-Level Sensor Bus
D. Fieldbus

A

C. Bit-Level Sensor Bus

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14
Q

Which (A/D) Analog to Digital converter will have the greatest accuracy?

A. 16 Bit
B. 8 Bit
C. 12 Bit
D. 14 Bit

A

A. 16 Bit

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15
Q

What term is used to describe the efficiency of an AC Induction Motor?

A. Volt Factor
B. Frequency Factor
C. Power Factor
D. Commutation Factor

A

C. Power Factor

16
Q

A completely plugged purge pipe in a bubbler tube level system will result in:

A. Low level readings
B. Level reading locked at the last value when plug occured
C. High level readings
D. Low level readings if the level transmitter is not pressure compensated

A

C. High level readings

17
Q

A lead sheet for commissioning a new process control system would contain what information?

A. Project Management Hierarchy
B. Instrument index
C. Instrument symbols
D. Instrument specifications

A

C. Instrument symbols

18
Q

Rate is another term for?

A. Gain
B. Proportional Band
C. Integral
D. Derivative

A

D. Derivative

19
Q

Which device could never be considered a standard and thus would never be part of a calibration program?

A. PRT
B. HART Communicator
C. Comparator
D. Coriolis Flowmeter

A

B. HART Communicator

20
Q

The sensitivity or microV/Degree C relationship of a thermocouple is also known as:

A. Peltier Coefficient
B. Thompson Coefficient
C. Seebeck Coefficient
D. Dynamic Coefficient

A

D. Dynamic Coefficient

21
Q

Which type of device may require (CJC) Cold Junction Compensation?

A. RTD
B. Thermocouple
C. Thermistor
D. Bimetallic Thermometer

A

B. Thermocouple

22
Q

According to ISA-5.1-1984 (R1992) Instrument Symbols and Identification standard, what is a PSV

A. Safety Valve
B. Relief Valve
C. Safety Relief Valve
D. Any of the above

A

D. Any of the above

23
Q

Preventive Maintenance is:

A. Unscheduled maintenance
B. Emergency maintenance
C. Scheduled maintenance
D. Involves testing such as: temperature, noise, vibration

A

C. Scheduled maintenance

24
Q

Referring to precess control instrumentation a “DVC” is the abbreviation for?

A. Digital Vibration Controller
B. Dewpoint Valve Controller
C. Digital Valve controller
D. Digital Versatile Controller

A

C. Digital Valve controller

25
Q

A pressure switch is mounted 10 feet below a process line which contains water @ 60 degrees F. It is desired to have the pressure switch trip (Contacts Close) at 50 psi, increasing pressure. What pressure should you adjust the setpoint to for the pressure switch?

A. 50 psi
B. 45.67 psi
C. 55 psi
D. 54.33 psi

A

D. 54.33 psi

26
Q

A pressure transmitter is configured for a range of 50 to 150 psi. This is an example of:

A. A suppressed zero range
B. A zero based range
C. An elevated zero range
D. A non-suppressed zero range

A

A. A suppressed zero range

27
Q

Electrometric gas analyzers, electrochemical sensors, and paramagnetic sensors are used to measure which type of process gas?

A. Carbon Dioxide
B. Carbon Monoxide
C. Oxygen
D. Natural Gas

A

C. Oxygen

28
Q

Peronnel CO gas monitors will normally trigger audible and visual alarms at _____ ppm or higher.

A 150
B. 200
C. 50
D. 25

A

C. 50

29
Q

Which differential pressure producer has the least permanent pressure loss?

A. Segmental orifice plate
B. Flow nozzle
C. Venturi tube
D. Eccentric orifice plate

A

C. Venturi tube

30
Q

Which type of error would you typically NOT find in a temperature transmitter?

A. Span
B. Zero
C. Hysteresis
D. Linearity

A

C. Hysteresis

31
Q

1 torr is equal to:

A. 1 psi
B. 1 in of water
C. 1 mm Hg
D. 1 cm of water

A

C. 1 mm Hg

32
Q

An (LVDT) Linear Variable Differential Transformer is used for what Measurement?

A. To measure transformer efficiency
B. To measure linearity
C. To measure displacement
D. To measure hysteresis

A

C. To measure displacement

33
Q

A 20 foot tall tank containing oil with a (SG) specific gravity of 0.88 is 92% full. What should a pressure gauge connected to the bottom of the tank read in psi?

A. 7.9672 psi
B. 17.6 psi
C. 7.0111 psi
D. 8.66 psi

A

C. 7.0111 psi

34
Q

A glass pH electrode develops ______ per pH unit @ 25 degrees C.

A. 592.2 mv
B. 5.92 mv
C. 0.592 mv
D. 59.2 mv

A

D. 59.2 mv

35
Q

If a spring and diaphragm actuator with a 10” diameter diaphragm is used to move a valve, with 15 psi applied to the actuator diaphragm, how much force will be on the valve steam?

A. 1,177.875 pounds
B. 1,177.875 pounds less the opposing spring force
C. 4,711.5 pounds less the opposing spring force
D. 15 pounds

A

B. 1,177.875 pounds less the opposing spring force

36
Q

When mesuring the mv signal from a pH probe in a process with a pH of 5, what happens to the mv signal as the temperature of the process increases?

A. The mv signal will become more negative
B. The mv signal will stay the same
C. The mv signal will become more positive
D. positive or negative depending on the process

A

A. The mv signal will become more negative

CCST LEVEL 1 (4 decks)

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