IEC YEAR 2 PART 3 EXAM |COMPLETE QUESTIONS WITH 100%
RATED EXPERT SOLUTIONS |2026 LATEST UPDATED
___ law states "charged bodies attract or repel each other with a force that is directly proportional
to the product of the charges and inversely proportional to the square of the distance between
them." - (answer)Coulomb's
Which of the formulas, shown below, is correct to find the equivalent of three inductors in a
parallel circuit? - (answer)LT= 1 / ( 1/L1 + 1/L2 + 1/L3)
If the RMS value is 125 volts, what is the peak value? - (answer)176.75
Which of the symbols, shown below, is used to represent an inductor in a schematic circuit? -
(answer)219 RW Q4 C
Electrical current is the flow of ___. - (answer)electrons
What type of magnet is used for the coil in a relay? - (answer)electromagnet
___ flow equals current flow. - (answer)Electron
,When AC current passes through a circuit conductor or a connected load, it creates ___ that
creates (or induces) a voltage in the circuit that actually opposes the applied voltage. - (answer)a
magnetic field
A ___ is a device that converts electrical energy into a linear force. - (answer)solenoid
Two unlike poles of magnets brought together cause the magnets to ___ each other. -
(answer)attract
Permanent magnets are used in the construction of ___ motors.I. AC II. DC - (answer)II only
Nonferrous materials, such as copper, ___ attracted by the magnetic field around a magnet. -
(answer)are not
A coil of wire wrapped around an iron core is a(n) ___ when it carries current. -
(answer)electromagnet
Motors, circuit breakers, contactors, relays, and motor starters all use ___ principles. -
(answer)electromagnetic
,The strength of the magnetic field around a coil (or winding) ___ when AC voltage is applied. -
(answer)varies
The basic law of magnetism states that unlike poles (south and north, for example) ___ each
other. - (answer)attract
As two magnetic poles of the same polarity get closer together the force of ___ gets stronger. -
(answer)repulsion
A coil of wire, when carrying current, acts like a ___. - (answer)magnet
The invisible magnetic lines that leave the north pole and enter the south pole of a magnet are
___. - (answer)lines of flux
A ___ is a device that attracts iron and steel because of the molecular alignment of its material. -
(answer)magnet
Current flow through a conductor creates a magnetic field around the conductor. - (answer)True
, As current flow through a conductor increases, the magnetic field strength ___. -
(answer)increases
The strength of the magnetic field around a coil (or winding) ___ when DC voltage is applied. -
(answer)is constant
If the current flowing through a coil of wire is increased, the magnetic field strength ___. -
(answer)also increases
If a circuit is operating at 277 volts (RMS) the peak value of the voltage is ___ volts. -
(answer)391.8
Which of the symbols, shown below, is used to represent an AC power source in a schematic
circuit? - (answer)219.2 Q2 D
The term gigahertz means ___ per second. - (answer)billion cycles
To an electrician the drawing at the right represents ___. - (answer)a sine wave
RATED EXPERT SOLUTIONS |2026 LATEST UPDATED
___ law states "charged bodies attract or repel each other with a force that is directly proportional
to the product of the charges and inversely proportional to the square of the distance between
them." - (answer)Coulomb's
Which of the formulas, shown below, is correct to find the equivalent of three inductors in a
parallel circuit? - (answer)LT= 1 / ( 1/L1 + 1/L2 + 1/L3)
If the RMS value is 125 volts, what is the peak value? - (answer)176.75
Which of the symbols, shown below, is used to represent an inductor in a schematic circuit? -
(answer)219 RW Q4 C
Electrical current is the flow of ___. - (answer)electrons
What type of magnet is used for the coil in a relay? - (answer)electromagnet
___ flow equals current flow. - (answer)Electron
,When AC current passes through a circuit conductor or a connected load, it creates ___ that
creates (or induces) a voltage in the circuit that actually opposes the applied voltage. - (answer)a
magnetic field
A ___ is a device that converts electrical energy into a linear force. - (answer)solenoid
Two unlike poles of magnets brought together cause the magnets to ___ each other. -
(answer)attract
Permanent magnets are used in the construction of ___ motors.I. AC II. DC - (answer)II only
Nonferrous materials, such as copper, ___ attracted by the magnetic field around a magnet. -
(answer)are not
A coil of wire wrapped around an iron core is a(n) ___ when it carries current. -
(answer)electromagnet
Motors, circuit breakers, contactors, relays, and motor starters all use ___ principles. -
(answer)electromagnetic
,The strength of the magnetic field around a coil (or winding) ___ when AC voltage is applied. -
(answer)varies
The basic law of magnetism states that unlike poles (south and north, for example) ___ each
other. - (answer)attract
As two magnetic poles of the same polarity get closer together the force of ___ gets stronger. -
(answer)repulsion
A coil of wire, when carrying current, acts like a ___. - (answer)magnet
The invisible magnetic lines that leave the north pole and enter the south pole of a magnet are
___. - (answer)lines of flux
A ___ is a device that attracts iron and steel because of the molecular alignment of its material. -
(answer)magnet
Current flow through a conductor creates a magnetic field around the conductor. - (answer)True
, As current flow through a conductor increases, the magnetic field strength ___. -
(answer)increases
The strength of the magnetic field around a coil (or winding) ___ when DC voltage is applied. -
(answer)is constant
If the current flowing through a coil of wire is increased, the magnetic field strength ___. -
(answer)also increases
If a circuit is operating at 277 volts (RMS) the peak value of the voltage is ___ volts. -
(answer)391.8
Which of the symbols, shown below, is used to represent an AC power source in a schematic
circuit? - (answer)219.2 Q2 D
The term gigahertz means ___ per second. - (answer)billion cycles
To an electrician the drawing at the right represents ___. - (answer)a sine wave
