NEIEP 600 exams with complete solutions and realistic
questions, 100% verified answers| grade A+.
when a cam or vane is moved close to a magnetic levleing switch what occurs? -
ANSWER: the switch changes its satate
what is meant by the normal state of relay contacts? - ANSWER: contact state
without current applied to the coil
what type of wave form is generated by two pole ac generator in one complete
revolution? - ANSWER: one full AC cycle
what defines the the period of a ac waveform ? - ANSWER: the time it takes to
complete one full cycle .
what is the period of a 120 hz - ANSWER: .00833 seconds
a sine wave beginning at 0 degrees will reach positive and negative peaks at what
two points ? - ANSWER: 90 and 270 degrees
what is it meant by the term peak to peak voltage ? - ANSWER: voltage between
positive and negative peaks
the expression 0.636Xpeak voltage best describes what? - ANSWER: voltage or
current average
what best describes the term AC effective voltage ? - ANSWER: the AC voltage
required to produce the same power as a DC voltage
what is the peak voltage of a waveform with 480 VAC RMS? - ANSWER: 679 volts
, what effect an inductor has on current flow ? - ANSWER: it opposes change
what is the secondary voltage of a 5 to 1 step down transformormer whith a
primary voltage of 125 volts - ANSWER: 25 volts
the primary of a 5 to 1 step down transformer has 1 amp . what is the secondary
current? - ANSWER: 5 amps
how can three phase voltage be stepped down using transformer ? - ANSWER: by
using a three phase transformer or three single phase transformers
in capacitors , what is the purpose of the dielectric ? - ANSWER: prevent acring
within the capacitor
which of the following is true about capacitors in ac CUIRCUITS .? - ANSWER:
current leads voltage all the time
what describes a capacitor's ability to store an electrical charge - ANSWER:
capacitance
what is the time constant for a circuit with 150 k ohms and 2 microfarad capacitor?
- ANSWER: .3 seconds
what describes a capacitor's ability to store an electrical charge - ANSWER:
capacitance
which of the following satements is correct about polorized electrolytic capacitors -
ANSWER: voltage polarity must be correct
what happends in a cuircuit , when the capacitor voltage equals the source voltage
? - ANSWER: current flow stops in the cuircuit
questions, 100% verified answers| grade A+.
when a cam or vane is moved close to a magnetic levleing switch what occurs? -
ANSWER: the switch changes its satate
what is meant by the normal state of relay contacts? - ANSWER: contact state
without current applied to the coil
what type of wave form is generated by two pole ac generator in one complete
revolution? - ANSWER: one full AC cycle
what defines the the period of a ac waveform ? - ANSWER: the time it takes to
complete one full cycle .
what is the period of a 120 hz - ANSWER: .00833 seconds
a sine wave beginning at 0 degrees will reach positive and negative peaks at what
two points ? - ANSWER: 90 and 270 degrees
what is it meant by the term peak to peak voltage ? - ANSWER: voltage between
positive and negative peaks
the expression 0.636Xpeak voltage best describes what? - ANSWER: voltage or
current average
what best describes the term AC effective voltage ? - ANSWER: the AC voltage
required to produce the same power as a DC voltage
what is the peak voltage of a waveform with 480 VAC RMS? - ANSWER: 679 volts
, what effect an inductor has on current flow ? - ANSWER: it opposes change
what is the secondary voltage of a 5 to 1 step down transformormer whith a
primary voltage of 125 volts - ANSWER: 25 volts
the primary of a 5 to 1 step down transformer has 1 amp . what is the secondary
current? - ANSWER: 5 amps
how can three phase voltage be stepped down using transformer ? - ANSWER: by
using a three phase transformer or three single phase transformers
in capacitors , what is the purpose of the dielectric ? - ANSWER: prevent acring
within the capacitor
which of the following is true about capacitors in ac CUIRCUITS .? - ANSWER:
current leads voltage all the time
what describes a capacitor's ability to store an electrical charge - ANSWER:
capacitance
what is the time constant for a circuit with 150 k ohms and 2 microfarad capacitor?
- ANSWER: .3 seconds
what describes a capacitor's ability to store an electrical charge - ANSWER:
capacitance
which of the following satements is correct about polorized electrolytic capacitors -
ANSWER: voltage polarity must be correct
what happends in a cuircuit , when the capacitor voltage equals the source voltage
? - ANSWER: current flow stops in the cuircuit
