EMI in low-voltage circuits is often the result of __ using twisted conductors grounding the sheath sharing pathways with power circuits using sheathed power cables
What type of punch has a tapered shaft and point on the end? Brass punch Center punch Starter punch Pin punch
What do modern hydronic systems use to circulate the hot water? Select one: A. Pumps B. Gravity C. Fans D. Convection
What is the purpose of the expansion tank? Select one: A. To provide pressure for the water system B. To reduce the water temperature by expansion C. To allow room for extra water D. To allow for water volume changes due to temperature change
What materials are most commonly used for hydronic piping? Select one: A. PVC and CPVC B. CPVC and polybutylene C. Copper and galvanized iron D. Copper and cross-linked polyethylene
Which of the following can be done to prevent ground glass joints from sticking? A Lubricate the ends before joining B Use a Teflon sleeve at the joints C Both of the above D None of the above
What type of fire extinguisher should be used with electrical fires? A Type A B Type B C Type C D Any of the above
What invention made the development of the automobile possible? internal combustion engine steam engine electric motor rechargeable 12 volt battery
Which is something you should report as a possible clutch defect? A. A hard time getting into gear B. Vibration in the gas pedal C. Slow response to braking D. Oil leaks at wheel hubs
What identification information must be provided on a synthetic web slings? Hitch ratings Safety factors Date last certified Manufacturer's phone number
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
