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Instrumentation: FIRST PERIOD

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 "i" equipment can withstand?
(310103d) There are several essential components to a pressure regulator. Which of the components below would be used as a restricting element?
Explosion-proof equipment has several components that make it effective. Which of the components below is a requirement for equipment to be considered explosion-proof?
(310104d) A control valve is one of many FCEs that are used in industry. Which of the answers below reflects the relationship between a control valve and the process variable?
Ladders have specific designs for specific applications. Which of the answers below correctly identifies the ladder in the following picture?
How many coulombs of charge pass though a given point in 1 second, if the current is 15mA
A _________ has the air connection usually under of the diaphragm.
To solder a joint, there are steps that need to be followed to succeed. Which of the steps below would involve ensuring contamination free parts and soldering tip?
Solve for the missing side.
Occupational exposure limits have threshold limits. There are three of these threshold limits that are used, of the answers provided, which is not a value used?
A worker is grinding 6m away from another worker refueling a diesel welder. Is there any workplace infraction occurring in this situation? Choose the best answer below for answering this.
What is the pressure generated by a mass of 2 kg placed on a the top of a cylindrical piston with a 5 cm diameter filled with gas?
Pick the answer that will fill the blank. "_______ of the voltage would appear across the open circuit in a ______ circuit."
When 20 C passes by a point in a wire in 12 seconds, what is the current in amperes?
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?
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."
(310104b)There are many different valves to be used for different processes. Which of the valves below would best be used in a high pressure process?
Which of the electrical terms below can be best described as one that "internally converts stored chemical energy into electrical potential energy."
The relationship between the 4 temperature scales is very important to understand. Which of the answers below correctly corresponds to 0 K?
From the information given in the diagram below, what is the total parallel resistance of the circuit?
There are several types of soldering irons that are available in industry. Which type of iron below would rely on a voltage being produced when the tip touches the work to be done?
"Two angles that add to 180 degrees," is a description of which mathematical term?
There are several definitions used frequently in the CEC."Containing any explosion originating within its housing and prevent sparks from within its housing from igniting vapors, gases, dust or fibers in the air surrounding it." would best describe which of the terms below?
(310102n) Instrument enclosures are all built to a NEMA standard. Which of the standards below would a "hose test" pass be required?
Convert 0.625 to a fraction.
From the information given in the diagram below, what is the voltage across each resistor?
(310102c) Resistors are commonly rated in 3 distinct ways. Which of the answers below would best relate a "tolerance" rating?
Many electrical properties are a measured quantity, needing a unit of measurement. Which of the units below would be the correct unit of measurement for inductance?
There are two different ways of identifying general purpose tube. If you see "4 mm-SS-1.452" printed on the outside of the tube, what would the "4 mm" refer to?
Which of the terms below is measure in "watts"
There are several different notations on a length of pipe. Which of the notations below would have the thinnest pipe wall?
(310103d) There are several essential components to a pressure regulator. Which of the components below would be used as a loading element?
The point when increasing current will not increases magnetism in an electromagnet is call?
(310102n) The Canadian Electrical code (CEC) encompasses all standards for electrical/instrumentation work. Which of the sections of that code below would relate best to the installation of an electrical communication system?
If a pressure change of 20 kPa to 100 kPa is to fully stroke a valve, what strength of spring must be used. The control valve has a stem travel of 3.5 cm and the effective area of the diaphragm is 0.05 m^2
A _________ has the air connection usually above the diaphragm
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?
"An angle is one which is more than 90° but less than 180°" is a description of which mathematical term?
True force balance negative feedback system consists of:
There are several vital components to a differential pressure unit in a chart recorder. Which of the components below would move as the direct result of the rotation of the torque shaft?
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."
If a closed tank is pressurized to 20 psig and the pressure gauge at the bottom of the tank reads 25 psig, what head (in meters) of a liquid with a R.D. of 0.65 is contained in the tank
There are 5 separate classifications in the WHIMIS system. Which of those classifications is correctly represented by the following symbol?
Solve for the hypotenuse.
There are numerous steps to drilling with a power drill. Which answer below correctly identifies the size of the center punch mark in a piece to be drilled?
In industry, there are several types of protection used to reduce the risk of explosion. Which of the methods of protection below would explosion-proof equipment be primary used?
What are the 2 major parts of a control valve?
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 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?
Determine the voltage V(bc) with R1=70k ohms, R2= 136k ohms and R3= 360K ohms, with a current of 0.754 mA
There are many different parts to a parallel circuit. Which of the answers below corresponds correctly with the number "2" in the picture below?
When taking measurements, there are several terms that are commonly used. Which of the terms below is best described as the difference between the highest and lowest error values
When making a span adjustment, what is the first adjustment made?
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 increase?
Covert 3 ⅘ to an improper fraction
With the proper formula, "Work" is a measurable quantity. Which answer below represents the "work" part of that equation?
Due to a lengthy transmission distance a control valve is responding slowly. The device that would improve the response speed of the valve would be?
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?
In Unified National nomenclature what does the "1/2" represent in this bolt class- 1/2-12-UNC 3A
(310102n) The Canadian Electrical code (CEC) encompasses all standards for electrical/instrumentation work. Which of the sections of that code below would relate best to the maintenance of instruments in hazardous locations of instruments?
In the SI system of measurements, there are several symbols used for magnetism. Which of the measurement units below would represent "relative permeability"?
If the total error is 1.5 and the dead band error is 0.3, what is the hysteresis value?
Before entering a confined space for the first time or re-entering after a break, it is a good practice to do which of the following?
(310101c) Copper tube is the most used type of tubing in industry. What type of colour code would a Type K tube type typically have?
Materials with one to three electrons in their valence shell are considered what?
Calculate the gain when a change from 0.85 psig to 2.0 psig in nozzle backpressure and a change from 3 psig to 18 psig in the relay output occurs.
"A whole number and a fraction combined into one number", is a description of which type of fraction?
In a series circuit what percentage of the applied voltage would appear across an open circuit?
"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?
(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 connecting through the side wall of an enclosure?
(310102c) Resistors have several construction methods. Which of the resistors below would make use of a binder?
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?
The statement, "Whatever is done to one side of an equation, can be done to the other side of the equation" is false.
Hysteresis can only be calculated.
There are many different parts to a parallel circuit. Which of the answers below corresponds correctly with the number "5" in the picture below?
There are several terms that are used to describe the features of a particular thread type. Which of the answers below would best describe the "³⁄₁₆" in the bolt designation ³⁄₁₆-12 UNF x 6?
Of the adjustments below, which is the most common adjustment made?
(310101c) There are many specialized applications for copper tube. Which of the copper tube type would be used in a compressed air system?
"Is the change in velocity divided by the elapsed time for the change to be completed." is the description of which mathematical term?
There are 5 separate classifications in the WHIMIS system. Which of those classifications is correctly represented by the following symbol?
If the total error is 1.9 and the dead band error is is 0.8, what is the hysteresis value?
There are several different types of hammers used in industry. Which of the hammers below best represents the following picture?
Calculate 4/7 + 2/5, and state answer as a proper or mixed fraction
From the information given in the diagram below, what is the current flowing on branch R2?
What pressure in Kpa is required to produce a force of 17650 lbs. when applied to a diaphragm actuator with a radius of 5 inches?
There are 5 separate classifications in the WHIMIS system. Which of those classifications is correctly represented by the following symbol?
Factors affecting induced voltage include:
Convert ¹⁰⁄₁₅ to a decimal.
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 0-9 meters. What is the transmitter output signal if the fluid level is at 8.65 meters?
(310104d) Valve positioners provide several advantages over standard valves. Which of the advantages below would best relate to the addition or release of air from the actuator to achieve proper plug placement?
Inductive reactance is the _________________ to change in current created by coil in an AC circuit.
If, for every 12 C of charge, 50 J of energy is available, what is the voltage?
There are a number of steps to calibrating a two pen chart recorder. Which of the steps below would the pen pressure adjustment/verification be?
A pneumatic level transmitter, with an output range of 20-80 kPa, is being used to assess the fluid level in a cylinder though an input range of 0-17 meters. What is the transmitter output signal if the fluid level is at 8.65 meters?
If the total error is 1.4 and the dead band error is is 0.6, what is the hysteresis value?
If a closed tank is pressurized to 10 psig and the pressure gauge at the bottom of the tank reads 45 psig, what head (in meters) of a liquid with a R.D. of 0.78 is contained in the tank
(310104d) Valve positioners provide several advantages over standard valves. Which of the advantages below would best relate to the creation of two equal ranges from standard range?
Reduce ¹²⁄₆₀ and state as a proper or mixed fraction.
There are many different applications for copper tube. Which of those applications below would have the greatest internal operating pressure ratings?
A true force balance negative feedback system is a motion balance system?