Practice Exam Questions And Correct

Ohio Instrument Repair Technician Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2025|2026 Q&A | Instant Download Pdf

• When repairing a brass instrument, what is the primary purpose of

valve oil?

• To clean the valve
• To expand the valve size
• To reduce friction and allow smooth valve movement
• To polish the metal

Rationale: Valve oil reduces friction so valves move freely without

sticking.

• What tool is commonly used to remove dents from brass tubing?
• Needle file 1 / 3

• Razor saw
• Dent rod and ball set
• Rivet punch

Rationale: Dent rods with balls are inserted into tubing to push out

dents.

• Woodwind pads are commonly glued or attached using what

adhesive?

• Epoxy resin
• Hot glue
• Shellac
• Superglue

Rationale: Shellac provides correct adhesion and flexibility for pads.

4. Key cork on clarinets is used primarily to:

• Make the instrument louder
• Strengthen the keys
• Reduce key noise and cushion movement
• Seal tone holes

Rationale: Cork dampens key action and reduces noise.

• What is the function of a regulator screw on an oboe or bassoon?
• Tightens reed wires
• Adjusts key timing and pad height
• Controls air flow
• Secures joints 2 / 3

Rationale: Regulator screws synchronize multiple keys to close pads

properly.

• What is the primary cause of sticky saxophone pads?
• Bent rods
• Dry cork
• Moisture and residue buildup
• Incorrect spring tension

Rationale: Moisture and residue cause pads to stick against tone

holes.

• When measuring brass tubing, the inside diameter is referred to as

the:

• Pitch size
• Bore size
• Wall thickness
• Valve gauge

Rationale: Bore size measures internal diameter of brass tubing.

8. The needle spring on a clarinet key is used to:

• Absorb vibration
• Provide tension to return the key to position
• Seal the tone hole
• Prevent rust

Rationale: Springs provide the force for key movement return.

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