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.
Multiple Choice 20 points What should you do if your electric breaker keeps tripping? Just turn it back on Contact an electrician See if you can fix it yourself Put a penny in it
Valve stem height is most critical on which of these? Select one: A. Non -adjustable solid lifter systems B. Adjustable solid lifter systems C. Adjustable hydraulic lifter systems D. Overhead cam engines
10) What tools are needed to measure $1/2$ T of oil?
air out of the tire? A. If the recommended psi is above the number on the gauge, add air until it reaches the recommended number B. If the recommended psi is below the number on the gauge, let air out until it reaches the recommended number C. If the recommended psi is below the number on the gauge, add air until it reaches the recommended number 3. When should you inflate or let 1 poin D. Inflate the tire until you hear a click and the air compressor stops inflating
An engineering professional must obtain a Master's Degree in engineering from an ABET- accredited program and must adhere to a code of ethics. True False
If door glass falls to operate after installation, the first step is to check electrical connections. A) True B) False
What should the operator do if there are marks from the articulating paper on the sealant after checking the occlusion? a. Remove and replace the sealant b. Remove high spots with finishing burs c. Apply additional sealant to improve coverage d. Apply the curing light for a few additional minutes
Which type of chains sprockets have annular rings? Detachable Roller Pintle Silent
A(n) __ is used in a pulling motion to smooth and shape the floor of the cavity preparation. a. hatchet b. hoe c. chisel d. excavator
Tool Required:Depth Micrometer 19.Which way do you turn the lock nut to engage and disengage the lock on the depth rod and how far does it turn? a. Engage clockwi se/Disengage counterclockwise b. Disengage clockwise/Engage counterclockwise 20.With the lock nut disengaged turn the thimble counterclockwise what happens to the depth rod? a. It retracts b. It extends c. Nothing 21.Turn the thimble clockwise, without returning to "zero" and describe what hap- pens? a. It retracts b. It extends c. Nothing 22.Now do the same thing using the ratchet stop/speeder.Is there a difference in resistance? a. Yes b. No 23.Lock the depth rod with the lock nut and attempt to turn the ratchet stop! speeder. What happens? a. Nothing b. The depth rod moves and the ratchet does not click c. The depth rod moves and the ratchet clicks d. The depth rod does not move and the ratchet clicks 24.Using the ratchet stop/speeder return the micrometer to the "zero position on the sleeve. Is the measuring rod flush with the base? a. Yes b. No 25.Replace the 0 -1" measuring rod with the $1-2''$ measuring rod. Turn the thimble to the "zero" on the sleeve. Does the measuring rod extend out of the base? a. Yes b. No
