MECHANICAL & ELECTRICAL STUDY GUIDE QUESTIONS AND ANSWERS | EXAM
PREP 2026/2027
Electrical Current - ANS ✔✔A flow of electric charge through a medium/conductor. Charge
carried by electrons, but whose direction is defined by positive charged particles, which are
opposite electrons.
Conductor/Medium - ANS ✔✔carries electrical current from the source to the load without
providing too much resistance to current flow. eg: Wires, Power-lines
Insulators - ANS ✔✔materials that resist the flow of electricity.
Semiconductors - ANS ✔✔materials that are neither good conductors nor good insulators.
Electric Circuit - ANS ✔✔a continuous path along which an electric current can flow.
Units Used To Describe Electricity - ANS ✔✔Voltage (volts), Amperage (amps), Ohms
Ampere - ANS ✔✔A unit of electrical current. One ampere is the electrical charge of one
Coulomb that flows in an electrical circuit in one second.
Ohms - ANS ✔✔A unit of electrical resistance where each resistor is defined by.
Electrical Power - ANS ✔✔Measured in watts, is the rate which electric energy is transferred by
an electric circuit. Formula is P = IV where P is the electric power, V is the potential difference,
and I is the electric current.
, Watt - ANS ✔✔A unit of electrical power and measures the consumed energy (joules) per unit
of time (second). 1W = 1 joule/1 second
What Is The Standard Billing For Energy Consumption - ANS ✔✔KiloWatt-Hour OR( kWh)
Power Source - ANS ✔✔A Battery or Generator
Load - ANS ✔✔an electrical component or group of components that consume electricity.
Examples: Kitchen appliances, Lamps, Lighting, Radios,
Computers, Television
Closed Circuit - ANS ✔✔an uninterrupted path that allows a continuous flow of current through
an electrical circuit.
Open Circuit - ANS ✔✔Occurs when the path of the current flow of electricity is interrupted
(such as if the switch in a circuit is opened/turned off).
Short Circuit - ANS ✔✔Occurs when an unintended shortcut develops in a circuit that permits
current flow through an unintentional path.
Series Circuit - ANS ✔✔the current passes through Each Component in the circuit Without
Branching off to Individual Components in the circuit. Example: If one lamp goes out, the circuit
becomes open and all lamps go out.
Parallel Circuit - ANS ✔✔The current branches off to Individual Components in the circuit.
Example: If one lamp fails, the circuit remains closed and all other lamps remain lit.
PREP 2026/2027
Electrical Current - ANS ✔✔A flow of electric charge through a medium/conductor. Charge
carried by electrons, but whose direction is defined by positive charged particles, which are
opposite electrons.
Conductor/Medium - ANS ✔✔carries electrical current from the source to the load without
providing too much resistance to current flow. eg: Wires, Power-lines
Insulators - ANS ✔✔materials that resist the flow of electricity.
Semiconductors - ANS ✔✔materials that are neither good conductors nor good insulators.
Electric Circuit - ANS ✔✔a continuous path along which an electric current can flow.
Units Used To Describe Electricity - ANS ✔✔Voltage (volts), Amperage (amps), Ohms
Ampere - ANS ✔✔A unit of electrical current. One ampere is the electrical charge of one
Coulomb that flows in an electrical circuit in one second.
Ohms - ANS ✔✔A unit of electrical resistance where each resistor is defined by.
Electrical Power - ANS ✔✔Measured in watts, is the rate which electric energy is transferred by
an electric circuit. Formula is P = IV where P is the electric power, V is the potential difference,
and I is the electric current.
, Watt - ANS ✔✔A unit of electrical power and measures the consumed energy (joules) per unit
of time (second). 1W = 1 joule/1 second
What Is The Standard Billing For Energy Consumption - ANS ✔✔KiloWatt-Hour OR( kWh)
Power Source - ANS ✔✔A Battery or Generator
Load - ANS ✔✔an electrical component or group of components that consume electricity.
Examples: Kitchen appliances, Lamps, Lighting, Radios,
Computers, Television
Closed Circuit - ANS ✔✔an uninterrupted path that allows a continuous flow of current through
an electrical circuit.
Open Circuit - ANS ✔✔Occurs when the path of the current flow of electricity is interrupted
(such as if the switch in a circuit is opened/turned off).
Short Circuit - ANS ✔✔Occurs when an unintended shortcut develops in a circuit that permits
current flow through an unintentional path.
Series Circuit - ANS ✔✔the current passes through Each Component in the circuit Without
Branching off to Individual Components in the circuit. Example: If one lamp goes out, the circuit
becomes open and all lamps go out.
Parallel Circuit - ANS ✔✔The current branches off to Individual Components in the circuit.
Example: If one lamp fails, the circuit remains closed and all other lamps remain lit.
