A randomized 100 question test from a pool of 1236 questions, good luck!
Class I, Zone 1 locations can use i, ia and ib intrinsically safe equipment. Which of the answers below correctly identifies the number of faults that the "ia" equipment can withstand?
5 coulomb of charge require how many electrons?
The ISA has defined 3 types of installations for purge/pressurization for hazardous applications. Which of the types below would an enclosures classification be reduced from Class I, Zone 1 to a Class I, Zone 2?
A capacitor discharges it's voltage at a specific rate. How many tau are required for a capacitor to expend 99% of it's original voltage?
A vacuum gauge indicates a pressure of 15" Hg. What will the pressure be , in kPaa, if the atmospheric pressure is 13.9 psia?
There are several different types of layout tools used in industry. Which of the tools below best represents the following picture?
In the figure below, R1= 10 ohms, R2=6 ohms, and R3=4 ohms, with the battery producing 40 V, what is the power delivered by the battery?
By the early 1800's, there had been several gas laws discovered. Which of those laws below is best described as "the volume of a mass of gas is inversely proportional to its pressure."?
There are many studies on how pressure and force affect fluids. "Horizontal runs do not increase pressure." is one of the principles of which answer below?
(310101c) Copper tube is the most used type of tubing in industry. What type of copper tubing would a colour code of red represent?
The ISA has defined 3 types of installations for purge/pressurization for hazardous applications. Which of the types below would an enclosures classification be reduced from Class I, Zone 1 to non-hazardous?
Most electrical properties have an equation linked to them. In the equation L= (N²μA)÷ƪ, which of the answers below does the "N" represent?
Calculate the gain when a change from 0.25 psig to 1.5 psig in nozzle backpressure and a change from 3 psig to 20 psig in the relay output occurs.
From the information given in the diagram below, what is the total parallel resistance of the circuit?
1 psi is equal to _____ kPa
There are numerous methods to mount instruments properly. Which of the methods below is shown in the picture?
What are the two main systems of negative feedback?
Each one of the installations of purge/pressurization has its own requirements for internal equipment. Which of the installations below would be able to use equipment rated as general purpose?
If a pressure change of 20 kPa to 90 kPa is to fully stroke a valve, what strength of spring must be used. The control valve has a stem travel of 5.5 cm and the effective area of the diaphragm is 0.065 m^2
What is the pressure generated by a mass of 4 kg placed on a the top of a cylindrical piston with a 7 cm diameter filled with gas?
To perform an "Angularity" adjustment, the order of step(s) is/are?
"The quantifiable change in position of an object, including how far the object travels and in what direction, before achieving it's final position." is the description of which mathematical term?
(310101c) There are a wide variety of tubing fitting types. Which of the fittings below would best be used when terminating tube connections?
There are several vital components to a static pressure mechanism in a chart recorder. Which of the components below would be used as a span adjust?
The main function of a valve positioner is which of the below?
What is the formula that the pneumatic relays amplification or gain is expressed by?
The CEC generates a gas grouping based on the potential combustion, and results of combustion of each type. Which of the groups below would Ethylene belong to?
(310105d) Displacement quantities are all a measurable amounts. Which of the answers below would "Kinetic friction" use as it's unit of measurement?
(310102m) There are numerous electrical terms relating to specific components. Which of the terms below can be best described as the the process of expending the accumulated energy in a capacitor?
What is the area of a semi-circle with a diameter of 2.45m?
A true force balance negative feedback system is a motion balance system?
When a pressure of 15 psi is applied to a diaphragm actuator with a diameter of 18 cm, what is the force in Newtons (N) that is created?
The properties of a gas are unique to its molecular make-up. Which of the terms below would best be defined as "is the pressure required to liquefy a gas at its critical temperature."?
There are 5 separate classifications in the WHIMIS system. Which of the following classifications is responsible for flammable material?
Section 315(1), (2) and (3) covering guardrails can be found in which piece of legislation below?
Gasses react to the increase or decrease of pressure in measurable ways. Which of the terms below describes the reaction of an enclosed gas to a pressure decrease?
A pneumatic level transmitter, with an output range of 20-100 kPa, is being used to assess the fluid level in a cylinder though an input range of 0-12 meters. What is the transmitter output signal if the fluid level is at 8.65 meters?
The sliding Vernier calipers are a widely used measuring device. Which of the parts below best relates to "7"?
What is the term used to describe the total opposition to current flow in an AC circuit?
If the total error is 1.3 and the dead band error is 0.7, what is the hysteresis value?
The relationship between the 4 temperature scales is very important to understand. Which of the answers below correctly corresponds to 0 R?
There are two different ways of identifying general purpose tube. If you see "⅜ in-SS-0.036" printed on the outside of the tube, what would the "⅜" refer to?
When servicing or troubleshooting a valve there are several steps that must be completed. In controlling hazardous energy, verifying energy sources in work area are without power, would be which of the steps below?
The best description for "Zero adjustment" in relation to calibrating instruments is which of the following?
To move 175 C across two points. when the voltage is 30 V, how much energy is required?
When servicing or troubleshooting a valve there are several steps that must be completed. In controlling hazardous energy, verifying a physical lock or securing method is placed on all isolating devices, would be which of the steps below?
Copper tube is commonly available in two types of tempers. Which of the answers below best describes a tube that is referred to as "hard or rigid"?
What is the area of a rectangles with sides measuring 15.5 cm, and 12.6 cm?
(310102m) There are numerous electrical devices in a circuit. Which of the devices below can be best described as a passive two-terminal component used to store and release electrical energy?
There are many studies on how pressure and force affect fluids. "Fluid pressure is exerted in all directions." is one of the principles of which answer below?
Calculate the gain when a change from 1.55 psig to 2.15 psig in nozzle backpressure and a change from 3 psig to 20 psig in the relay output occurs.
There are a number of factors determining the resistance to current of a material. Which one of the terms below would be best described as "A greater amount of free electrons reside in a conductor of greater diameter per linear unit."
In this circuit R1= 4 ohms, R2= 5 ohms and R3=9 ohms with the battery producing 40V. what is the voltage drop over R2
There are several terms that are used specifically with flammable gases and liquids. Which of the terms below is best described as the minimum or maximum concentration levels of a flammable or combustible material for ignition?
(310101c) There are several categories for connecting tubing. Which of the methods below is never used as a tubing connection method?
There are many different parts to a parallel circuit. Which of the answers below corresponds correctly with the number "7" in the picture below?
"Either of two angles that added together produce an angle of 90°" is a description of which mathematical term?
There are several vital components to a differential pressure unit in a chart recorder. Which of the components below would convey the movement of the drive arm to the range arm?
What percentage of 35 is 21?
When selecting a valve for a piping system, several factors must be considered. Which of the terms below can be correctly described by the statement, "Constitutes the pressure differential generated between two defined points through various ares of loss."
(310101c) There are a wide variety of tubing fitting types with specific name describing them. Which of the fittings below would best be used when tubing around a tight corner?
Within the umbrella of intrinsically safe loops, there are several sub-categories and classifications. Which of the terms below would best be describe a barrier that blocks any excess voltage from gaining access to a hazardous area?
Lenz Law states:
If the total error is 1.4 and the dead band error is is 0.6, what is the hysteresis value?
What item would be used on a pneumatic system to speed up the pneumatic signal?
A tank contains a liquid that has a R.D. = 1.15. The depth of the liquid is 6.7 meters. What is the pressure in kPa at the base of the tank?
Use the answers below to correctly fill in the blanks. "Resistance of a conductor is________ to it's ______."
The common methods for classifying pipe is by NPS and DN. Which of the answers below are these methods used for the classification of piping?
For every gas law there is a corresponding equation. Which of the gas laws below is represented by the equation "P₁V₁n₂T₂=P₂V₂n₁T₁"?
To move 75 C across two points. when the voltage is 10 V, how much energy is required?
There are several types of measuring elements used in industry. Which of the answers below is best represented by the picture below?
State ⁸⁴⁵⁶⁄₂₄₃ as a mixed fraction.
There are several methods to routing and protecting cable, tubing, and insulated impulse lines. Which of the answers below would be best describe a major difference between cable tray and metal conduit?
Piping material that is non-ferrous is most common in lower temperature services. Which of the answers below would best be classified as a "non-ferrous" material?
An absolute presser gauge is giving a reading of 7.8 PSI(a). Convert this reading to PSI(g) assuming a local barometric pressure of 11.3 PSI(a).
If field servicing, or removing, a control valve from a piping system it is important to recognize the piping isolations. Which of the isolations below correctly identifies the following picture?
(310103f) There are three main components in a simple signal transmission system. Which of the components below is best represented by the letter "C"?
If a closed tank is pressurized to 18 psig and the pressure gauge at the bottom of the tank reads 39 psig, what head (in meters) of a liquid with a R.D. of 0.76 is contained in the tank
What is the area of the cylinder that has a mass of 4 kg placed on it creating 98321 Pa of pressure?
There is a safe ratio for the use of extension ladders. If there is a ladder extending 18 ft vertically, how far from the wall should the base of the ladder be?
The trigonometric ratio of sine is calculated with which mathematical equation?
Having to convert between SI and USCS measurements is commonplace in industry today. Which of the answers below is the correct conversion for 45 lbf?
In the WHMIS system, this symbol represents which hazard class? Choose from the following answers.
There are many different parts to a parallel circuit. Which of the answers below corresponds correctly with the number "6" in the picture below?
If there was a need to control the process pressure upstream of the regulator, which one of the devices below would be used?
In the WHMIS system, this symbol represents which hazard class? Choose from the following answers.
Heat is based on the movement of molecules. Which of the answers below correctly fills the blank in the following sentence, "Temperature is the measurement of the average _________ of the movement of molecules."
(310105i) Any solid has inherent properties associated with it. which of the tests below refers to the application of force to a material and measures the specimen's response to the stress.
When an atom gains an electron, it is commonly referred to as which of the below?
The Si unit for measuring force is the Newton. Which of the answers below correctly states the proper formula to calculate this unit?
Ladders have specific designs for specific applications. Which of the answers below correctly identifies the ladder in the following picture?
"To cause the valve to close, an increase in air pressure to the actuator is required" is the definition of?
Within the umbrella of intrinsically safe loops, there are several sub-categories and classifications. Which of the terms below would best be describe a field device that has a minimum of 1.3 volts it can develop or contain?
What is the name of the part of a drill bit that carries the cut material out of the hole that is being drilled?
(310105i) Physics has may "laws" that can be applied in industry. Which of the "laws" below would relate best to the strain of a material is proportional to the stress applied
Hazardous locations are further divided into specific zones and divisions. Which of the answers below would apply if flammable vapours were present for more than 10, but less than 1000 hours a year?
"A simple circuit for measuring an unknown resistance by connecting it so as to form a quadrilateral with three known resistances and applying a voltage between a pair of opposite corners." is the best description of which of the terms below?
"A quantity having direction as well as magnitude," is a description of which mathematical term?
When dealing with pressure measurements, there are several vital terms that are used. Which of the terms below would best be described as a measure of how much matter is in an object?
(310102n) Instrument enclosures are all built to a NEMA standard. Which of the standards below would a "hose test" pass be required?