Term
| Two technicians are speaking about helicoils. Technician A says helicoils can be threaded into a properly prepared hole for thread repair. Technician B says helicoils are screwed in to create their own threads. Who is correct? |
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Definition
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Term
Which of the following statements about pins is NOT correct?
1. Tapered pins are tapered the entire length
2. Roll pins are rolled from a thin piece of metal
3. Pins are used when a part is disassembled frequently
4. Dowel pins are straight except for the tapered ends |
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Definition
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3. Pins are used when a part is disassembled frequently.
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Term
| Two technicians are discussing snap rings. Technician A says that snap rings are made from low quality steel. Technician B says that snap rings may be internal or external. Who is correct? |
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Definition
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Term
Which of the following statements about keys is NOT correct?
1. There will be a matching keyway in the component that is being installed
2. Keys are used to retain parts on a shaft
3. Keys are recessed halfway into keyways
4. Keys are only round shaped |
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Definition
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4. Keys are only round shaped.
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Term
| Two technicians are discussing electrical wires. Technician A says that the current carrying capacity of a wire is directly rated to its cross-section. Technician B says that metric sizing of a wire directly refers to the cross-section of the wire. Who is correct? |
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Definition
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Term
| Two technicians are discussing soldering wires. Technician A says that resin-core solder adds little or no resistance to a circuit. Technician B says that acid-core solder can add resistance because of the damage from the acid. Who is correct? |
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Definition
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Term
Which of the following statements about electrical connectors is NOT correct?
1. Terminal connectors allow wires to be connected or disconnected
2. Molded connectors can reduce chances of crossing circuits
3. Butt connectors allow circuits to open and close
4. Butt connectors are used to connect two wires together. |
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Definition
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3. Butt connectors allow circuits to open and close.
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Term
| Two technicians are discussing torque-to-yield bolts. Technician A says that torque-to-yield bolts are reusable. Technician B says torque-to-yield bolts provide more accurate torquing. Who is correct? |
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Definition
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Term
Which of the following statements about washers is NOT correct?
1. Lock washers are used to prevent parts from backing off
2. Tooth washers can have only internal threads
3. A flat washer is used between a nut and a component to distribute load
4. Tooth washers work in a manner similar to lock washers. |
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Definition
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2. Tooth washers can have only internal threads.
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Term
| Two technicians are discussing U.S. thread sizes. Technician A says fastener threads can be fine or coarse. Technician B says that U.S. bolts only come in coarse thread. Who is correct? |
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Definition
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Term
| Two technicians are discussing bolts. Technician A says that the shank of a bolt is the area between the head and the threads. Technician B says that replacement bolts can be any grade as long as the thread pitch and size is correct. Who is correct? |
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Definition
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Term
Which of the following statements about hex nuts is NOT correct?
1. Grade 8 USC hex nuts have six dots
2. Grade 5 USC hex nuts have three dots
3. Class 9 metric hex nuts have an Arabic 9
4. Class 10 metric hex nuts have an Roman numeral 10 |
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Definition
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4. Class 10 metric hex nuts have an Roman numeral 10.
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Term
| Two technicians are discussing tap and die sets. Technician A says that tap and die sets can only be used to make threads, not repair them. Technician B says that taps and dies can be used to repair threads if used carefully. Who is correct? |
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Definition
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Term
Which of the following statements about thread repairs is NOT correct?
1. Thread chasers fit over a damaged bolt like a hex nut
2. Helicoils require special tools in order to be installed
3. There is only one size of helicoil
4. Thread-restoring files are similar to other files in appearance |
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Definition
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3. There is only one size of helicoil.
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Term
| Two technicians are discussing snap rings. Technician A says special pliers should be used when removing and installing snap rings. Technician B says snap rings can be internal or external. Who is correct? |
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Definition
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