MECHANICAL AND ELECTRICAL QUESTIONS AND ANSWERS | STUDY GUIDE & EXAM PREP
2026/2027
Electricity - ANS ✔✔The science dealing with the physical phenomena arising from the
existence and interaction of electric charges
Electric charge - ANS ✔✔The intrinsic property of matter giving rise to all electric phenomena,
occurring in two forms arbitrarily given positive and negative algebraic signs and measured in
coulombs. Opposite charges attract while like charges repel each other
Coulomb - ANS ✔✔The SI unit of electric charge, equal to the quantity of electric transferred
across a conductor by a current of one ampere in one second. Abbr.: C
Electromotive force - ANS ✔✔The energy per unit charge available for conversion from a
chemical, mechanical or other form of energy into electrical energy, or vice versa, in conversion
device as a battery, generator or motor. Abbr.: emf
Potential difference - ANS ✔✔The voltage difference between two points that represents the
work involved in the transfer of a unit charge from one point to the other
Potential - ANS ✔✔The work required to move a unit charge from a reference point to a
designated point
Voltage - ANS ✔✔Potential difference or electromotive force expressed in volts: analogous to
pressure in water flow
Circuit - ANS ✔✔The complete path of an electric current, including the source of electric
energy
,Volt - ANS ✔✔The SI unit of potential difference and electromotive force, defined as the
difference of electric potential between two points of conductor carrying a constant current of
one ampere, when the power dissipated between the points is equal to one watt. Abbr.: V
Series - ANS ✔✔An arrangement of components in an electric circuit in which the same current
flows through each component in turn without branching
Parallel - ANS ✔✔An arrangement of components in an electric circuit in which all positive
terminals are connected to one conductor, the same voltage being applied to each component
Battery - ANS ✔✔A group of two or more cells connected together to produce electric current
Cell - ANS ✔✔A device for converting mechanical into electric energy, usually consisting of a
receptacle with electrodes in an electrolyte
Electric cell - ANS ✔✔A device for converting mechanical into electric energy, usually consisting
of a receptacle with electrodes in an electrolyte
Galvanic cell - ANS ✔✔A device for converting mechanical into electric energy, usually
consisting of a receptacle with electrodes in an electrolyte
Voltaic cell - ANS ✔✔A device for converting mechanical into electric energy, usually consisting
of a receptacle with electrodes in an electrolyte
Electrolyte - ANS ✔✔A nonmetallic conducting medium in which current is carried by the
movement of ions
Electrode - ANS ✔✔A conductor through which a current enters or leaves a nonmetallic
medium
, Anode - ANS ✔✔The negative terminal of a primary cell or storage battery
Cathode - ANS ✔✔The positive terminal of a primary cell or storage battery
Power - ANS ✔✔W = V x A
Power - ANS ✔✔The product of potential difference and current in a direct-current circuit. In an
alternating current circuit, power is equal to the product of he effective voltage, the effective
current, and the Cosine of the phase angle between current and voltage
Wattage - ANS ✔✔An amount of power, esp. The power required to operate an electrical device
or appliance, expressed in watts
Kilowatt - ANS ✔✔A unit power, equal to 1,000 watts. Abbr.: kW
Kilowatt-hour - ANS ✔✔A unit of energy, equal to the energy transferred or expanded by one
kilowatt in one hour: a common unit of electric power consumption. Abbr.: kWh
Current - ANS ✔✔The rate of flow of electric charge in a circuit per unit time, measured in
amperes
Ampere - ANS ✔✔The basic SI unit of electric current, equivalent to a flow of one coulomb per
second or to the steady current produced by one volt applied across a resistance of ohm. Abbr.:
A
Amperage - ANS ✔✔The strength of an electric current measured or expressed in amperes:
analogous to the rate of water flow
2026/2027
Electricity - ANS ✔✔The science dealing with the physical phenomena arising from the
existence and interaction of electric charges
Electric charge - ANS ✔✔The intrinsic property of matter giving rise to all electric phenomena,
occurring in two forms arbitrarily given positive and negative algebraic signs and measured in
coulombs. Opposite charges attract while like charges repel each other
Coulomb - ANS ✔✔The SI unit of electric charge, equal to the quantity of electric transferred
across a conductor by a current of one ampere in one second. Abbr.: C
Electromotive force - ANS ✔✔The energy per unit charge available for conversion from a
chemical, mechanical or other form of energy into electrical energy, or vice versa, in conversion
device as a battery, generator or motor. Abbr.: emf
Potential difference - ANS ✔✔The voltage difference between two points that represents the
work involved in the transfer of a unit charge from one point to the other
Potential - ANS ✔✔The work required to move a unit charge from a reference point to a
designated point
Voltage - ANS ✔✔Potential difference or electromotive force expressed in volts: analogous to
pressure in water flow
Circuit - ANS ✔✔The complete path of an electric current, including the source of electric
energy
,Volt - ANS ✔✔The SI unit of potential difference and electromotive force, defined as the
difference of electric potential between two points of conductor carrying a constant current of
one ampere, when the power dissipated between the points is equal to one watt. Abbr.: V
Series - ANS ✔✔An arrangement of components in an electric circuit in which the same current
flows through each component in turn without branching
Parallel - ANS ✔✔An arrangement of components in an electric circuit in which all positive
terminals are connected to one conductor, the same voltage being applied to each component
Battery - ANS ✔✔A group of two or more cells connected together to produce electric current
Cell - ANS ✔✔A device for converting mechanical into electric energy, usually consisting of a
receptacle with electrodes in an electrolyte
Electric cell - ANS ✔✔A device for converting mechanical into electric energy, usually consisting
of a receptacle with electrodes in an electrolyte
Galvanic cell - ANS ✔✔A device for converting mechanical into electric energy, usually
consisting of a receptacle with electrodes in an electrolyte
Voltaic cell - ANS ✔✔A device for converting mechanical into electric energy, usually consisting
of a receptacle with electrodes in an electrolyte
Electrolyte - ANS ✔✔A nonmetallic conducting medium in which current is carried by the
movement of ions
Electrode - ANS ✔✔A conductor through which a current enters or leaves a nonmetallic
medium
, Anode - ANS ✔✔The negative terminal of a primary cell or storage battery
Cathode - ANS ✔✔The positive terminal of a primary cell or storage battery
Power - ANS ✔✔W = V x A
Power - ANS ✔✔The product of potential difference and current in a direct-current circuit. In an
alternating current circuit, power is equal to the product of he effective voltage, the effective
current, and the Cosine of the phase angle between current and voltage
Wattage - ANS ✔✔An amount of power, esp. The power required to operate an electrical device
or appliance, expressed in watts
Kilowatt - ANS ✔✔A unit power, equal to 1,000 watts. Abbr.: kW
Kilowatt-hour - ANS ✔✔A unit of energy, equal to the energy transferred or expanded by one
kilowatt in one hour: a common unit of electric power consumption. Abbr.: kWh
Current - ANS ✔✔The rate of flow of electric charge in a circuit per unit time, measured in
amperes
Ampere - ANS ✔✔The basic SI unit of electric current, equivalent to a flow of one coulomb per
second or to the steady current produced by one volt applied across a resistance of ohm. Abbr.:
A
Amperage - ANS ✔✔The strength of an electric current measured or expressed in amperes:
analogous to the rate of water flow
