Practice Test Geeks(NETA) InterNational Electrical Testing Association Certified Technicians Practice Test
← All NETA Flashcard Decks

Electrical Testing Procedures & Equipment Operation Flashcards

7 cards from real NETA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Electrical Testing Procedures & Equipment Operation flashcards as text

  1. Which standard governs the acceptance testing of electrical equipment and systems used in NETA accredited testing?

    Answer: NETA ATS (Acceptance Testing Specifications)

    NETA ATS (Acceptance Testing Specifications) is the primary standard that defines test procedures, equipment requirements, and acceptance criteria for new electrical installations.

  2. A power factor test on a medium-voltage cable at 25°C yields 2.8%. After correcting for temperature, the value at 20°C would be:

    Answer: Lower than 2.8%

    Power factor increases with temperature, so correcting a reading taken at 25°C back to the reference temperature of 20°C will yield a lower corrected power factor value.

  3. During a circuit breaker minimum pickup voltage test on the trip coil, the coil must reliably operate at what percentage of rated control voltage per NETA MTS?

    Answer: 85%

    NETA MTS requires that trip coils operate reliably at a minimum of 85% of rated control voltage to ensure the breaker trips under degraded voltage conditions.

  4. The step voltage method is an alternative to the fall-of-potential method for testing ground resistance when:

    Answer: The area available for test leads is restricted and full spacing cannot be achieved

    When site constraints prevent placing the current electrode at the required distance (e.g., urban substations), the simplified two-point or staged fall-of-potential methods are used as alternatives.

  5. In a partial discharge (PD) measurement on HV equipment, the discharge magnitude is expressed in units of:

    Answer: Picocoulombs (pC)

    Partial discharge activity is quantified in picocoulombs (pC), representing the apparent charge magnitude of each discharge pulse detected in the measurement circuit.

  6. When using an automated circuit breaker analyzer, the 'minimum OC trip time' test applies what type of current to the breaker's overcurrent trip element?

    Answer: A high-magnitude DC or AC current many times the trip threshold

    Minimum trip time (instantaneous region) tests inject a high-multiple current (e.g., 5–10× or higher) to verify that the overcurrent element operates within the manufacturer's specified instantaneous time.

  7. Per NETA MTS, after completing insulation resistance testing on rotating machinery, what must be done before disconnecting the test leads?

    Answer: Discharge the winding through the instrument for at least 4 times the test duration

    NETA MTS and IEEE 43 require discharging the winding for at least 4 times the test duration (minimum 1 minute) to safely dissipate stored capacitive charge before personnel contact.