NEIEP 400 Final Exam Study Guide 2025: Master Journeyman Practice Test & IUEC Review

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NEIEP 400 FINAL EXAMS (LATEST 2025 UPDATES

STUDY BUNDLE WITH COMPLETE SOLUTIONS)

QUESTIONS AND VERIFIED ANSWERS | 100%

CORRECT | GRADE A

Which is true when placing an ammeter into a circuit ?

.....ANSWER.....The meter is placed in series with any component

Which of the following describes the most useful feature of the

clamp - on ammeter ? .....ANSWER.....Does not require that

connections be disturbed

Which of the following devices is an example of a reactive

component that can store energy for long periods of time causing

an electrical hazard even with power removed ?

.....ANSWER.....Capacitor

What must be done when testing a resistance to avoid false

readings caused by parallel circuit paths ?

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.....ANSWER.....Remove one of the two wires to the item being

tested

A minus sign in front of a reading of the digital voltmeter

indicates which of the following ? .....ANSWER.....The positive

lead is connected to the negative source

Which of the following statements best describes CEMF ?

.....ANSWER.....Opposes the applied voltage .

Refer to the figure . What will be the phase relationship between

the primary and secondary voltages ? .....ANSWER.....The

secondary voltage will be 180 ° out of phase .

Which type of transformer would be used to prevent noise from

being fed back to the line without changing the voltage levels ?

.....ANSWER.....Isolation transformer

What is the power available from a 68 kVA transformer

connected in open delta configuration ? .....ANSWER.....39.44

kVA

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The secondary winding of an 11,000 volt to 220 volt transformer

has 50 windings on the secondary How many turns are on the

primary winding ? .....ANSWER.....2500 turns

A transformer has 728 turns on the primary winding and 56 turns

on the secondary With 120 volts applied on the primary , what

is the output voltage on the secondary ? .....ANSWER.....9.23 volts

A transformer has a primary voltage of 440 V with 100 turns

and a 15 : 1 voltage ratio of transformation . With a primary

current of 25 amps , what is the current in the secondary ?

.....ANSWER.....375 amps

Which statement best describes eddy currents ?

.....ANSWER.....They are circulating currents set up by magnetic

induction .

With the following values : Ep = 208 VAC ; Es = 35 VAC ; Ip =

3.8 amps ; Is = 21.42 amps , what is the efficiency of this

transformer ? .....ANSWER.....95 %

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Which of the following would describe a transformer with a

fixed voltage transformation ratio of 1:12 ? .....ANSWER.....Step

- up transformer

Which of the following would describe a transformer with a

primary current of 27 amps and a secondary current of 1 amp ?

.....ANSWER.....Step - down transformer

Which statement is correct regarding transformers?

.....ANSWER.....The primary winding terminals are identified with

the letter H

Refer to the figure . What type of transformer is represented ?

.....ANSWER.....Core type with a wye primary and delta

secondary

Which would you do to check for an open primary winding ?

.....ANSWER.....Measure the resistance across the primary