Electrical Mechanic Test Study Guide
2026/2027: Complete Exam Prep, Practice
Questions & Answers
When too much load is placed on an electrical current, what will happen? -
correct answer-Lamps will burn out
In case of an overload, which one of the following would prevent the passage of
electrical current? - correct answer-A circuit breaker
The purpose of a transformer is to change? - correct answer-AC power to either
higher or lower voltage
The purpose of a step-down transformer is to reduce? - correct answer-Voltage
A transformer is rated in? - correct answer-Kilovolts-Amperes
A dry type of transformer does not have? - correct answer-A metering device
In a DC circuit, watts divided by volts equals? - correct answer-Amperes
, A 100 watt light bulb is brighter than a 60 watt light bulb because of the
difference in? - correct answer-Size of the filament
10 amps at 10 volts will pull how many watts? - correct answer-100 watts
A watt is defined by the equation? - correct answer-W=AV
Conductors are usually stranded? - correct answer-To increase flexibility
Galvanic action in metal conduit may best be prevented by? - correct answer-
Keeping different kinds of metal from touching
To cut rigid conduit you should use a? - correct answer-Three wheel pipe cutter
The main reason for grounding conduit is to? - correct answer-Prevent conduit
from becoming alive to ground
Splices in buried conduit? - correct answer-Are not allowed by code
To measure voltage across a load one would connect? - correct answer-A
voltmeter across the load
The terminal voltage of eight cells connected in series is the? - correct answer-
Sum of the voltages of each cell
2026/2027: Complete Exam Prep, Practice
Questions & Answers
When too much load is placed on an electrical current, what will happen? -
correct answer-Lamps will burn out
In case of an overload, which one of the following would prevent the passage of
electrical current? - correct answer-A circuit breaker
The purpose of a transformer is to change? - correct answer-AC power to either
higher or lower voltage
The purpose of a step-down transformer is to reduce? - correct answer-Voltage
A transformer is rated in? - correct answer-Kilovolts-Amperes
A dry type of transformer does not have? - correct answer-A metering device
In a DC circuit, watts divided by volts equals? - correct answer-Amperes
, A 100 watt light bulb is brighter than a 60 watt light bulb because of the
difference in? - correct answer-Size of the filament
10 amps at 10 volts will pull how many watts? - correct answer-100 watts
A watt is defined by the equation? - correct answer-W=AV
Conductors are usually stranded? - correct answer-To increase flexibility
Galvanic action in metal conduit may best be prevented by? - correct answer-
Keeping different kinds of metal from touching
To cut rigid conduit you should use a? - correct answer-Three wheel pipe cutter
The main reason for grounding conduit is to? - correct answer-Prevent conduit
from becoming alive to ground
Splices in buried conduit? - correct answer-Are not allowed by code
To measure voltage across a load one would connect? - correct answer-A
voltmeter across the load
The terminal voltage of eight cells connected in series is the? - correct answer-
Sum of the voltages of each cell
