Technician A states that welding shielding gasses can displace air so adequate ventilation is necessary for your safety. Technician B states that shielding gasses are used to dissipate toxic gasses to ensure the welder's breathing zone is clear of toxic gases given off during the welding process. Who is correct? Technician A only Technician B only Both Technicians Neither Technician A nor Technician B
Which of the following does not commonly cause a cold lap? Too large a puddle Wrong travel speed Wrong wire speed All of the above can cause a cold lap
Technician A states that the deposition rate is the actual amount of weld metal deposited per unit of time. Technician B states that deposition rate is normally measured in pounds per hour. Who is correct? Technician A Technician B Both Technicians Neither Technician A nor Technician B
Which of the following manual controls are used by welders for semi-automatic MIG welding operation? Travel Speed Gun positioning Guidance All of the above are used in semiautomatic MIG welding operation
Technician A states that the basic function of shielding gasses is hold the atmosphere in contact with the metal to more easily help in the formation of oxides and nitrides to reduce weld deficiencies. Technician B states that Argon and Helium are common inert gasses used as shielding gasses. Who is correct? Technician A only Technician B only Both Technicians Neither Technician A nor Technician B
Which of the following does not affect deposition rate? Weld size Weld joint design Physical limitations of the welder to retain control of the weld puddle as travel speed in increased All of the above factors affect deposition rate
What is the BEST way to weatherproof roof penetrations when installing a rooftop solar array racking system? Use sealant and flashing Use stainless stee hardware and sealant Use stainless steel hardware and flashing Use stainless steel hardware
Line-voltage thermostats in residential applications will be damaged if connected to 120 Vac or 240 Vac. True False
Engineers, architects, and others who engage in design to solve practical problems use: Mathematical applications and intuition Scientific knowledge and parental advice Intuition and parental advice Scientific knowledge and mathematical applications
What does the emergency shut-off switch do? Select an answer. Shuts down all the dispensers. Stops the tank truck from over-filling the underground tank. Shuts down the tank monitor. Sounds an alarm.
Plastic components should be wiped with Motorcraft Metal Surface Prep Wipes prior to applying the RTV on the plastic component. A) TRUE B) FALSE
Select the correct answer and then click the Next button. Which coating classification BEST describes the presence of defects, but no serious corrosion? a. Good b. Fair c. Poor d. Bare
Select the correct answer and then click the Next button. What can interrupt cathodic protection and mask corrosion? a. Humidity b. Dissimilar metals c. Disbondment d. Static electricity
Select the correct answer and then click the Next button. What often causes pockets with corrosion grooves? a. Thin spots b. Wrinkled tape c. Holidays d. Air pockets
Select the correct answer and then click the Next button. What is the cause of premature pipeline corrosion? a. Keeping pipe aboveground b. Using cast iron pipe c. Coating failure d. Low product flow
Which type of slack adjuster is offered by most manufacturers because it resists over-adjustment? Select one: a. Stroke-sensing ASAs b. Clearance-sensing ASAs c. Manual slack adjusters d. Six-inch slack adjusters
Self-powered test lights are like regular test lights except that they contain a __ battery. Select one: a. 0.3-volt b. 24-volt C. . $12-volt$ d. 1.5-volt
What distinguishes a BIMODAL PV System from a UTILITY INTER-ACTIVE PV System? Bimodal has batteries Both are grid connected. Utility Interactive is cheaper
3. The engine in your car is sometimes called: A. A 4-stroke engine B. A 2-stroke engine C. An external combustion engine D. None of the answers
QUESTION: Which statement is true about the effects of ambient temperature on solid state devices? POSSIBLE ANSWERS: A solid state device is more likely to withstand excessive cold than excessive heat. The typical failure rate for a solid state device is $35^{\circ }C(95^{\circ }F)$ The failure rate for a solid state device doubles for every $10^{\circ }C$ that the temperature rises.
