All of these are true of airless welding EXCEPT. A) Never use the welding iron at maximum temperature. B) Two-sided repairs require completing the front side first, then the backside. C) Use a V-groove with a filler rod to gain better penetration. D) Use a rod that matches the base material

When performing a sanding test to identify plastic, non -polyolefin plastic usually creates powdery dust when sanded. A) True B) False

Which type of plastic welder uses a shoe with a melt tube to feed a filler rod through? A) Nitrogen welder B) Hot stapler C) Airless welder D) Hot air welder

Which of the following is a good method for recreating a complex mounting tab shape? A) Sanding down a larger tab B) Forming fiber reinforcement body filler by shaping it with your hands C) Pouning heated/liquefied plastic in a tab mold D) Tracing an outline of a good, existing tab on plastic film to transfer the outline to a new tab

Low-pressure acetylene gauges usually have a red-line to indicate dangerous pressure levels above __ 5 psig (34.4 kPa) 10 psig (68.9 kPa) 15 psig (103.4 kPa) 20 psig (206.8 kPa)

Which NASA rocket is being developed for long duration missions reaching far beyond low-Earth orbit? Select one: a. Gemini b. Nebula c. Orion d. Ursa Major e. Excelsior

Which is the reciprocating member of the pumping element used in a port helix metering pump? barrel plunger tappet control rack

What would the phase angle be on a port-helix metering injection pump fueling a 4-stroke cycle diesel engine? 30 degrees 60 degrees 120 degrees 360 degrees

What component is responsible for managing plunger effective stroke? tappets camshaft control rack delivery valve

Technician A says that only offshore engines are permitted to use port-helix metering fuel systems on EPA MY 2010 compliant and later engines. Technician B says that port-helix metering injection pumps can be used on current diesel engines when the peak power rating is less than 70 BHP (52 kW). Who is correct? Technician A only Technician B only Both A and B Neither A nor B

Hot Questions

9 Multiple Choice 1 point Which of the following is not a measurement function of a DMM? Pressure Voltage Continuity Resistance

An oilless lubricating system uses a well or reservoir in the end bell. A True B False Question 8 Which of the following statements about replacement capacitors is false? A They should have the same capacitance value as the original. B They should have a capacitance value up to $25\% $ greater than the original. C They should never be undersized. D They may have a capacitance value up to $10\% $ greater than the original.

Split-phase motors use a(n) __ to disconnect the start windings as the motor approaches running speed. A unloader B VFD C squirrel cage rotor D centrifugal switch Question 12 On a capacitor-start,induction-run motor, a centrifugal switch or relay disconnects __ when the motor reaches about $75\% $ of its rated speed. A the start winding only B the start capacitor only C both the start winding and start capacitor D both the start capacitor and run capacitor

Just before lifting off a rotary wing pilot must check the weather at the scene for a medical transport. In addition the pilot must also: Know the condition of the patient. Check the weather at the receiving hospital. Inventory all equipment on board the aircraft. Know the experience of the crew setting up the landing zone.

Advantages of ECMs include the following, except __ A ability to maintain constant airflow B easily replaceable brushes C efficient performance D variable speed Question 22 Important motor information such as rated voltage time rating, insulation class frequency, phase, and horsepower can be found on the __ A motor frame B motor nameplate C bearings D shaft

Which type of discontinuity is NEVER visible during visual inspection? underbead cracking porosity toe cracks undercut

The NEC in Table 210.24 shows that the minimum conductor size for branch-circuit wiring is __ 16 AWG 20 AWG 18 AWG 14 AWG

424170 What is the minimum number of trenches that should be dug across a truck-bed, railcar, or barge to acquire a representative sample? 3 (three) 4 (four) 5 (five) 7 (seven)

Nickel alloys should not be heat-treated. Select one: True False

The operator interface audible alarm sounds when there is a hydrogen event. Select true or false. True False