EIAT Tool Recognition and Use 4 — Questions and Answers
Question 1: Which tool is used to measure the resistance of an elevator motor winding?
- Clamp meter
- Ohmmeter or multimeter in resistance mode (Correct answer)
- Megohmmeter
- Oscilloscope
Correct answer: Ohmmeter or multimeter in resistance mode
An ohmmeter (or multimeter set to resistance) measures winding resistance in ohms to check for opens or shorts.
Question 2: A technician is testing insulation integrity of elevator motor windings. Which specialized instrument is required?
- Standard multimeter
- Megohmmeter (megger) (Correct answer)
- Clamp ammeter
- Oscilloscope
Correct answer: Megohmmeter (megger)
A megohmmeter applies high voltage to measure insulation resistance in megohms, revealing degraded insulation.
Question 3: When cutting the threads on a threaded rod used for hitch plate installation, which tool is used?
- Die and die stock (Correct answer)
- Tap and tap wrench
- Threading machine only
- Angle grinder
Correct answer: Die and die stock
A die and die stock cuts external threads onto a rod; a tap cuts internal threads inside a hole.
Question 4: Which tool is used to cut a clean hole through a steel panel for a push button or indicator fixture?
- Hole saw or chassis punch (Correct answer)
- Drill bit only
- Tin snips
- Plasma cutter
Correct answer: Hole saw or chassis punch
A chassis (knockout) punch or hole saw produces a clean, correctly sized hole in a steel panel for electrical fixtures.
Question 5: What tool measures the actual running current of an elevator motor without interrupting the circuit?
- Voltmeter
- Clamp ammeter (clamp meter) (Correct answer)
- Multimeter in series
- Ohmmeter
Correct answer: Clamp ammeter (clamp meter)
A clamp ammeter slips around a conductor and measures current via electromagnetic induction without breaking the circuit.
Question 6: Which tool is used by an elevator mechanic to crimp a compression terminal onto a heavy copper conductor?
- Hammer and cold chisel
- Hydraulic crimping tool (Correct answer)
- Soldering iron
- Wire stripper
Correct answer: Hydraulic crimping tool
A hydraulic crimping tool applies the high force needed to make a gas-tight crimp on large copper terminal lugs.
Question 7: A damaged safety switch housing bolt must be drilled out. After drilling, which tool restores the original threads?
- Tap (Correct answer)
- Die
- Reamer
- File
Correct answer: Tap
A tap cuts internal threads into a drilled hole to restore the original thread profile.
EIAT Tool Recognition and Use 4
Which tool is used to measure the resistance of an elevator motor winding?