NEC MASTER EXAM 2024/2025 WITH
100% ACCURATE SOLUTIONS
If two 10-ohm resistors are connected in series, what is the total
resistance of these resistors? - Precise Answer ✔✔20 ohms
In a split-phase motor, how much greater is the starting current when
compared to the full-load current? - Precise Answer ✔✔6 to 8 times
The terminals of a motor can be identified using a battery and a ___ -
Precise Answer ✔✔voltmeter
A 5-ohm and a 20-ohm resistor are connected in parallel. What is the
total resistance of these two resistors? - Precise Answer ✔✔4 ohms
The normal location to provide overcurrent protection in an electrical
circuit is ___ - Precise Answer ✔✔where the conductor receives its
supply
Which factor determines the outcome of an electrical shock? - Precise
Answer ✔✔The amount of current
Isolated power systems are used to prevent ___ - Precise Answer
✔✔power interruption
,The speed of a three-phase squirrel cage induction motor is controlled by
the frequency of the applied voltage and ___ - Precise Answer ✔✔the
number of poles
Where insulating protective equipment may be damaged, it ___ - Precise
Answer ✔✔requires its own protection (e.g., leather gauntlets over
rubber gloves)
Individual branch circuits are not required for portable X-ray equipment
requiring no more than ___ - Precise Answer ✔✔60A
The type of rubber protective equipment that is made of natural rubber
or a vulcanized synthetic is ___ - Precise Answer ✔✔Type 1
Line isolation monitors must have a green signal lamp that glows when
the system is isolated from ground and located ____ - Precise Answer
✔✔so it is visible to staff in the anesthetizing location
Under strict safety guidelines, which of the following should be used to
discharge capacitors before working on de-energized circuits? - Precise
Answer ✔✔A safety shorting probe
Which of the following motors is the best installation choice for an
application requiring adjustable speeds? - Precise Answer ✔✔Shunt DC
,To make sure the voltage is turned off before touching any terminals,
use a ___ - Precise Answer ✔✔voltage tester
If you bend from the waist to pick up an object weighing 20 pounds, the
amount of pressure applied to your lower back is ___ - Precise Answer
✔✔200 pounds
In addition to the NEC, the emergency electrical power for hospitals is
governed by the ___ - Precise Answer ✔✔Joint Commission
OSHA CFR 1910 is the standard for ______. - Precise Answer
✔✔general industry
The most common conductors used for light and power installations
range from ___ - Precise Answer ✔✔4/0 to No. 14 AWG
A circuit has a source voltage of 50V and a current of 10A. What is the
power in watts? - Precise Answer ✔✔500
What is the total resistance of a two-wire circuit that spans a distance of
200' each way if the resistance per 1,000' is 1.21 ohms? - Precise
Answer ✔✔0.484 ohm
The primary method of varying the speed on a DC shunt motor is to
adjust the voltage and current on the field winding or the ___ - Precise
Answer ✔✔armature
, The normal beating heart can be upset by an electrical current as small
as ___ - Precise Answer ✔✔75mA
A three-phase induction motor may have ___ - Precise Answer ✔✔2
poles
Which of the following motors provides constant speed from no-load
conditions to full-load conditions? - Precise Answer ✔✔Synchronous
If a circuit has 12 amps of current and the resistance is 20 ohms, the
applied voltage is ___ - Precise Answer ✔✔240 volts
The power factor of an induction motor at no-load conditions can be as
low as ___ - Precise Answer ✔✔15%
To keep the voltage drop of a 277V circuit to a maximum of 3%, what
would be the maximum allowable voltage drop? - Precise Answer
✔✔8.3V
Which of the following must be considered when determining the size of
the conductor required to connect an electrical load to the source of
supply? - Precise Answer ✔✔Permissible voltage drop
DC injection breaking is used on the ___ - Precise Answer ✔✔the
stationary windings of AC motors
100% ACCURATE SOLUTIONS
If two 10-ohm resistors are connected in series, what is the total
resistance of these resistors? - Precise Answer ✔✔20 ohms
In a split-phase motor, how much greater is the starting current when
compared to the full-load current? - Precise Answer ✔✔6 to 8 times
The terminals of a motor can be identified using a battery and a ___ -
Precise Answer ✔✔voltmeter
A 5-ohm and a 20-ohm resistor are connected in parallel. What is the
total resistance of these two resistors? - Precise Answer ✔✔4 ohms
The normal location to provide overcurrent protection in an electrical
circuit is ___ - Precise Answer ✔✔where the conductor receives its
supply
Which factor determines the outcome of an electrical shock? - Precise
Answer ✔✔The amount of current
Isolated power systems are used to prevent ___ - Precise Answer
✔✔power interruption
,The speed of a three-phase squirrel cage induction motor is controlled by
the frequency of the applied voltage and ___ - Precise Answer ✔✔the
number of poles
Where insulating protective equipment may be damaged, it ___ - Precise
Answer ✔✔requires its own protection (e.g., leather gauntlets over
rubber gloves)
Individual branch circuits are not required for portable X-ray equipment
requiring no more than ___ - Precise Answer ✔✔60A
The type of rubber protective equipment that is made of natural rubber
or a vulcanized synthetic is ___ - Precise Answer ✔✔Type 1
Line isolation monitors must have a green signal lamp that glows when
the system is isolated from ground and located ____ - Precise Answer
✔✔so it is visible to staff in the anesthetizing location
Under strict safety guidelines, which of the following should be used to
discharge capacitors before working on de-energized circuits? - Precise
Answer ✔✔A safety shorting probe
Which of the following motors is the best installation choice for an
application requiring adjustable speeds? - Precise Answer ✔✔Shunt DC
,To make sure the voltage is turned off before touching any terminals,
use a ___ - Precise Answer ✔✔voltage tester
If you bend from the waist to pick up an object weighing 20 pounds, the
amount of pressure applied to your lower back is ___ - Precise Answer
✔✔200 pounds
In addition to the NEC, the emergency electrical power for hospitals is
governed by the ___ - Precise Answer ✔✔Joint Commission
OSHA CFR 1910 is the standard for ______. - Precise Answer
✔✔general industry
The most common conductors used for light and power installations
range from ___ - Precise Answer ✔✔4/0 to No. 14 AWG
A circuit has a source voltage of 50V and a current of 10A. What is the
power in watts? - Precise Answer ✔✔500
What is the total resistance of a two-wire circuit that spans a distance of
200' each way if the resistance per 1,000' is 1.21 ohms? - Precise
Answer ✔✔0.484 ohm
The primary method of varying the speed on a DC shunt motor is to
adjust the voltage and current on the field winding or the ___ - Precise
Answer ✔✔armature
, The normal beating heart can be upset by an electrical current as small
as ___ - Precise Answer ✔✔75mA
A three-phase induction motor may have ___ - Precise Answer ✔✔2
poles
Which of the following motors provides constant speed from no-load
conditions to full-load conditions? - Precise Answer ✔✔Synchronous
If a circuit has 12 amps of current and the resistance is 20 ohms, the
applied voltage is ___ - Precise Answer ✔✔240 volts
The power factor of an induction motor at no-load conditions can be as
low as ___ - Precise Answer ✔✔15%
To keep the voltage drop of a 277V circuit to a maximum of 3%, what
would be the maximum allowable voltage drop? - Precise Answer
✔✔8.3V
Which of the following must be considered when determining the size of
the conductor required to connect an electrical load to the source of
supply? - Precise Answer ✔✔Permissible voltage drop
DC injection breaking is used on the ___ - Precise Answer ✔✔the
stationary windings of AC motors
