A randomized 100 question test from a pool of 1236 questions, good luck!
(310102m) The relationship between resistors, capacitors and time intervals is an interdependent one. Which of the answers below would be the reaction of a capacitor if you replaced a it with a smaller one in a simple circuit?
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?
Calculate the mass of a substance that has a density of 1479 kg/m³ and occupies a volume of 0.00631 m³
Convert 0.125 to a fraction.
From the information given in the diagram below, what is the voltage drop over R2, if R1= 3 ohms, R2= 5 ohms, R3= 7 ohms, R4= 6 ohms and the battery produces 24 V?
All objects have mass which is affected by gravity. Which of the answers below represents the SI approximate value for acceleration due to gravity?
Which type of pilot valve has one supply connection and two output connections?
What does the term "Cv" represent in calculating pressure drop?
Convert 0.500 to a fraction.
1 pound force is equal to
The symbol for a amperes is which of the below?
(310102g) Energy is lost due to undesirable resistance in any circuit. Which of the terms below refers to the power that is lost in a conductor during the transmission phase?
If a closed tank is pressurized to 134.345 kPa and the pressure gauge at the bottom of the tank reads 169.456 kPa, what head (in feet) of a liquid with a R.D. of 0.24 is contained in the tan
"The characteristic published by the manufacturer, based on tests performed in a closed system ensuring consistent flow behavior before installation." is the best description of which of the following terms?
(310102m) There are numerous electrical terms relating to specific components. Which of the terms below relates best to the plotting of a capacitor that is alternately charging and discharging?
There are several terms which relate to charging of a capacitor. Which of the terms below would apply to the period when the capacitor gets to 5τ?
Reduce and state answer as a proper or mixed fraction: ³⁴⁰⁄₁₆.
Isolate the following equation for "v": d=vt
Which organization sets standards for boots and safety glasses in Canada?
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?
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.
For every gas law there is a corresponding equation. Which of the gas laws below is represented by the equation "P₁V₁n₂T₂=P₂V₂n₁T₁"?
"To cause the valve to close, an increase in air pressure to the actuator is required" is the definition of?
There are many different parts to a parallel circuit. Which of the answers below corresponds correctly with the number "7" in the picture below?
(310105d) Heat is produced when friction occurs during motion. Which of the terms below correctly identifies the type of friction that produces of this heat?
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?
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 conditions signals received or transmitted to a hazardous area
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 several grades of iron and steel. Which of the answers below best represents a material that is extremely brittle because of it's high carbon content?
When taping a blind that does not go through the metal, the proper steps to tap it are:
When making a span adjustment, what is the first adjustment made?
In any intrinsically safe loop there are several main items that are vital to the loop. Which of the answers below contains those items?
A moment balance negative feedback system is a motion balance system?
Calculate the normal force exerted by an object that has a mass of 6732 grams
There are numerous guidelines provided in section 18, appendix B, from the CEC. Which of the rules from that appendix would relate to ignition temperatures?
A conductor is passed through a magnetic field and a voltage is induced, whose law is this?
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"?
Reduce ¹⁵⁄₄₅ and state as a proper or mixed fraction.
In the WHMIS system, "Flammable and combustible material" is represented by which hazard class? Choose from the following answers.
Which of the terms below is measured in "Joules"
A _________ has the air connection usually under of the diaphragm.
There are numerous types and styles of valves in industry. Which of the actuators below best represents the following picture?
(310105d) Scalar quantities are all a measurable amounts. Which of the answers below would "Work" use as it's unit of measurement?
Both °F and °C are used in industry currently. Which of the answers below correctly identifies 145 °C to °F?
The area of a circle is calculated with which correct equation?
Convert ¹⁰⁄₁₅ to a decimal.
Calculate the gain when a change from 0.5 psig to 1.35 psig in nozzle backpressure and a change from 3 psig to 12 psig in the relay output occurs.
In the figure below, R1= 10 ohms, R2=6 ohms, and R3=4 ohms, with the battery producing 40 V, what is the power absorbed by R1?
If, for every 20 C of charge, 80 J of energy is available, what is the voltage?
(310103d) There are several different designs of regulator. Which of the elements below are you affecting when you adjust spring compression?
Which of the welding processes below would welding goggles be worn?
There are several types of purge/pressurization permits that are available. Which of the permits below would best be used when an enclosure needs do be reduced from a Class I, Zone 1 to a Class I, Zone 2?
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?
There are many different parts to a parallel circuit. Which of the answers below corresponds correctly with the number "2" in the picture below?
If, for every 15 C of charge, 45 J of energy is available, what is the voltage?
"Two angles that add to 180 degrees," is a 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?
Which of the valves below would be used for isolation on each side of a control valve?
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 15 kg wagon is moving west with a speed of 3 m/s. Determine it's momentum.
The CEC has classified hazardous areas by a specific set of terms. Which of the answers below contains those terms in the correct order?
(310103d) There are several essential components to a pressure regulator. Which of the components below would be used as a restricting element?
There are many different types of alloy steels, each with specific properties. Which of the elements below would have the effect of refining the grain of the steel to allow for greater resistance to corrosion and temperature extremes?
What is the pressure generated by a mass of 4 kg placed on a the top of a cylindrical piston with a 3 cm diameter filled with gas?
A welder has set up a temporary fab area in a c-can. He has put 2 portable fans, one in the front and one in the back, in the c-can for ventilation. Based on the information provided, which type of ventilation is he using? Use the terms provided to choose the best answer.
State the number 0.003402 using decimal notation and round the answers to three significant digits.
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?
There are several advantages and limitations to installing a galvanically isolated barrier as an intrinsically safe barrier. Which one of the answers below can be considered an advantage of this style of barrier?
(310101c) Copper tube is the most used type of tubing in industry. What type of copper tubing would a colour code of blue represent?
Isolate for "v" in the following equation: d=vt
"At any junction in an electrical circuit, the sum of currents flowing in equal to the sum of currents flowing out ." This statement is the best description of which of the electrical laws below?
A battery has a rating of 80Ah, this means it can supply
What pressure does a column of liquid exert with a density of 48.9 lbs per cubic foot and a height of 6.5 feet
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?
(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?
(310102c) Resistors have several construction methods. Which of the resistors below would have the capacity to change its resistance value?
Chart recorders still have a place in industry for specific applications. Which of the applications below would be used to fulfill AER requirements at royalty trigger points for natural gas?
Purging is an effective means of reducing the potential hazards of an enclosure. Which of the answers below best describes the type of pressure produced in the enclosure by purging?
8 coulomb of charge requires how many electrons?
Determine the voltage V(cd) with R1=70k ohms, R2= 136k ohms and R3= 360K ohms, with a current of 0.754 mA
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?
There are many different types and styles of tubing in industry, but they can all be grouped into categories. Which of the answers below best represents all of the categories of tubing?
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?
(310104b) Valve disassembling is a fundamental part of the Instrumentation trade. Which of the hazards below would be of primary importance to eliminate when disassembling a sliding stem actuator?
Hazardous locations in industry have been grouped for ease of understanding Which of the classes below is best described an area where combustible dust, rather than gases or liquids, may be present in varying hazardous concentration?
Labels are an important piece of the WHIMS structure. Which of the labels below would be used when damage occurs to the original supplier label?
(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 3 tubes together?
What is the pressure generated by a mass of 3 kg placed on a the top of a cylindrical piston with a 5 cm diameter filled with gas?
There are three main types of measuring elements used in industry. Which of the answers below best represents the letter "A"?
Which of the terms below is best described by the following statement, "Defines the direction of current flow in an electrical circuit."?
The best description for "Span error" in relation to calibrating instruments is which of the following?
(310101c) There are a wide variety of tubing fitting types with specific name describing them. Which of the fittings below would have two tube ends in line and one pipe connector?
If a closed tank is pressurized to 16 psig and the pressure gauge at the bottom of the tank reads 31 psig, what head (in meters) of a liquid with a R.D. of 0.37 is contained in the tank
What is the pressure generated by a mass of 3 kg placed on a the top of a cylindrical piston with a 2 cm diameter filled with gas?
There are several terms that are used to describe the features of a particular thread type. Which of the terms below would best describe the largest diameter of the thread?
Use the answers below to fill in the blanks of the following sentence. "The _____ of the plates in a capacitor is _______ to it's capacitance."
"Energy" is a calculated quantity. Which of the formulas below would be used to calculate work energy?
There are several equations related to magnetism. Which of the terms below is represented by the equation "Ꙡᵣ=μₘ/μₒ"?
The volume of a cylinder is calculated with which correct equation?
(310104a) There are only two major parts to a sliding stem control valve assembly. Which of the components below would best be described as a device that regulates flow with differential pressure??