Exam (elaborations)

Electrical NCCER test

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Course
Electrical NCCER

Institution
Electrical NCCER

A 1000 KVA three phase transformer has a secondary voltage of 208/120. What is the secondary full load amperage? - Correct Answer A 1500 KVA three-phase transformer has a secondary voltage of 480/277. What is the secondary full load amperage - Correct Answer A conductor with 220 mils ...

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Uploaded on September 17, 2024
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electrical nccer test

Institution Electrical NCCER
Course Electrical NCCER

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Electrical NCCER test
A 1000 KVA three phase transformer has a secondary voltage of 208/120. What is the secondary full load
amperage? - Correct Answer

A 1500 KVA three-phase transformer has a secondary voltage of 480/277. What is the secondary full load amperage
- Correct Answer

A conductor with 220 mils of insulation would have insulation thickness of: - Correct Answer 0.22"

A current transformer has a rating of 4000:5. If 2000 amps load is on the primary, the secondary output would
produce: - Correct Answer 2.5 amps

A lightning outlet symbol in the shape of a circle indicated a: - Correct Answer incandescent fixture

A material with poor electrical conducting properties is a good - Correct Answer insulator

A megohmmeter will be used to check a cable. The electrician MUST be sure that the circuit is - Correct Answer de-
energized and locked, tagged out, and tested.

A protective device for limiting voltage spikes by discharging or bypassing surge current is called a: - Correct Answer
surge limiter

A UL listed rod type grounding electrode must have a minimum length of: - Correct Answer 8'

A voltage source of a circuit provides 240 volts and draws 48 amps. How much resistance is in the circuit? - Correct
Answer 5 ohms

ALL multimeters are capable of measuring: - Correct Answer current, voltage, and resistance

All of the following are common service voltages in the United States Except: - Correct Answer 372/575 three-phase,
four-wire

An auxiliary holding contact (seal-in) on a NEMA starter is indicated by the terminal marking: - Correct Answer A1 &
A2

An electrician that attempts to install or remove energized fuses will be exposed to the risk of an electrical shock and
an electrical: - Correct Answer arc.

An insulator resistance tester is also known as a: - Correct Answer megohmeter

Applications for heat tracing systems with self regulating control include those requiring a narrow operating range
and: - Correct Answer temperature sensitive fluids

As the ambient temperature surrounding a self-regulating heating cable gets warmer, the resistance: - Correct
Answer decreases slightly

As the load decreases on a squirrel cage induction motor, its power factor: - Correct Answer increases

As the mechanical load increases on a squirrel cage induction motor: - Correct Answer torque decreases and stator
current increases

Eight incandescent lightning fixtures are to be installed. Each fixture is 120 volts, with a 200-watt lamp. What is the
total connected load? - Correct Answer 13.3 amps

Electrical gloves should be inspected before each use to determine: - Correct Answer the maximum voltage they can
stand

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