ELECTRICAL CRAFT HELPER PRACTICE ACTUAL EXAM PAPER
2026 QUESTIONS WITH ANSWERS GRADED A+
● What happens when two unlike materials are rubbed together and then separated?
A. Both materials become electrically neutral
B. One material becomes positively charged and the other becomes negatively charged
due to the transfer of electrons between them
C. Both materials develop a negative charge
D. No charge transfer occurs unless a conductor is present
Answer: B. One material becomes positively charged and the other becomes
negatively charged due to the transfer of electrons between them
● What is 'bonding' in electrical safety?
A. Connecting an electrical system to the earth to provide a fault current path
B. Connecting two or more metallic objects with a wire or metal strap to equalize their
electrical potential and prevent sparks from static discharge between them
C. Attaching a grounding electrode to the main electrical panel
D. Insulating metallic objects with rubber coating to prevent shock
Answer: B. Connecting two or more metallic objects with a wire or metal strap to
equalize their electrical potential and prevent sparks from static discharge between
them
● What does grounding minimize between an object and the earth?
A. The electrical resistance of the object
B. The voltage difference between an object and ground — providing a low-resistance
path for fault current to safely flow to earth
C. The thermal energy generated by the object
D. The magnetic field surrounding electrical conductors
Answer: B. The voltage difference between an object and ground — providing a
low-resistance path for fault current to safely flow to earth
● On what type of surface does humidity have no effect in controlling static charge?
A. Metal surfaces
B. Only on liquids — humidity helps dissipate static on solid surfaces but has no effect on
controlling static charges on liquids
C. Rubber surfaces
D. Concrete floors
Answer: B. Only on liquids — humidity helps dissipate static on solid surfaces but
has no effect on controlling static charges on liquids
● When is a static charge generated by liquids?
A. When liquids are stored in sealed insulating containers at rest
B. When liquids are moving and in contact with other materials — the friction between the
flowing liquid and the pipe or vessel wall causes static charge buildup
C. When liquids are heated to their boiling point
, D. When liquids are mixed with other liquids of different viscosity
Answer: B. When liquids are moving and in contact with other materials — the
friction between the flowing liquid and the pipe or vessel wall causes static charge
buildup
● How can static charges on the surface of a liquid in a container be made harmless?
A. By adding salt to the liquid to increase its conductivity
B. By purging the container — displacing the flammable vapors with an inert gas to
eliminate the risk of ignition from a static discharge
C. By heating the container to evaporate the liquid quickly
D. By placing the container in a rubber-lined cabinet
Answer: B. By purging the container — displacing the flammable vapors with an
inert gas to eliminate the risk of ignition from a static discharge
● Why do smooth surface materials develop greater static charges than rough surface
materials?
A. Smooth surfaces conduct electricity better than rough ones
B. Smooth surfaces have greater contact area with other materials, allowing more
electron transfer and thus greater static charge buildup when they are separated
C. Rough surfaces absorb moisture more effectively, reducing static
D. Smooth surfaces are typically made of better insulating materials
Answer: B. Smooth surfaces have greater contact area with other materials,
allowing more electron transfer and thus greater static charge buildup when
separated
● What is applied to rubber on flat leather belts to prevent the generation of static charges?
A. Petroleum-based lubricant
B. A conductive dressing — a substance applied to the belt surface that provides a
conductive path, allowing static charge to dissipate rather than accumulate
C. A rubber vulcanizing compound
D. A standard belt dressing adhesive spray
Answer: B. A conductive dressing — a substance applied to the belt surface that
provides a conductive path, allowing static charge to dissipate rather than
accumulate
● What is the best way to remove static electricity from machines?
A. Wiping the machine surface with a dry cloth
B. Grounding the machine's framework — providing a continuous conductive path to earth
so that static charges are continuously dissipated before they can accumulate to
dangerous levels
C. Spraying the machine with compressed air
D. Coating the machine with rubber insulation
Answer: B. Grounding the machine's framework — providing a continuous
conductive path to earth so that static charges are continuously dissipated before
they can accumulate
● What are the six primary methods of producing voltage?
A. Friction, gravity, magnetism, nuclear, chemical, thermal
B. Chemical action, magnetism, friction, heat, light, and pressure
2026 QUESTIONS WITH ANSWERS GRADED A+
● What happens when two unlike materials are rubbed together and then separated?
A. Both materials become electrically neutral
B. One material becomes positively charged and the other becomes negatively charged
due to the transfer of electrons between them
C. Both materials develop a negative charge
D. No charge transfer occurs unless a conductor is present
Answer: B. One material becomes positively charged and the other becomes
negatively charged due to the transfer of electrons between them
● What is 'bonding' in electrical safety?
A. Connecting an electrical system to the earth to provide a fault current path
B. Connecting two or more metallic objects with a wire or metal strap to equalize their
electrical potential and prevent sparks from static discharge between them
C. Attaching a grounding electrode to the main electrical panel
D. Insulating metallic objects with rubber coating to prevent shock
Answer: B. Connecting two or more metallic objects with a wire or metal strap to
equalize their electrical potential and prevent sparks from static discharge between
them
● What does grounding minimize between an object and the earth?
A. The electrical resistance of the object
B. The voltage difference between an object and ground — providing a low-resistance
path for fault current to safely flow to earth
C. The thermal energy generated by the object
D. The magnetic field surrounding electrical conductors
Answer: B. The voltage difference between an object and ground — providing a
low-resistance path for fault current to safely flow to earth
● On what type of surface does humidity have no effect in controlling static charge?
A. Metal surfaces
B. Only on liquids — humidity helps dissipate static on solid surfaces but has no effect on
controlling static charges on liquids
C. Rubber surfaces
D. Concrete floors
Answer: B. Only on liquids — humidity helps dissipate static on solid surfaces but
has no effect on controlling static charges on liquids
● When is a static charge generated by liquids?
A. When liquids are stored in sealed insulating containers at rest
B. When liquids are moving and in contact with other materials — the friction between the
flowing liquid and the pipe or vessel wall causes static charge buildup
C. When liquids are heated to their boiling point
, D. When liquids are mixed with other liquids of different viscosity
Answer: B. When liquids are moving and in contact with other materials — the
friction between the flowing liquid and the pipe or vessel wall causes static charge
buildup
● How can static charges on the surface of a liquid in a container be made harmless?
A. By adding salt to the liquid to increase its conductivity
B. By purging the container — displacing the flammable vapors with an inert gas to
eliminate the risk of ignition from a static discharge
C. By heating the container to evaporate the liquid quickly
D. By placing the container in a rubber-lined cabinet
Answer: B. By purging the container — displacing the flammable vapors with an
inert gas to eliminate the risk of ignition from a static discharge
● Why do smooth surface materials develop greater static charges than rough surface
materials?
A. Smooth surfaces conduct electricity better than rough ones
B. Smooth surfaces have greater contact area with other materials, allowing more
electron transfer and thus greater static charge buildup when they are separated
C. Rough surfaces absorb moisture more effectively, reducing static
D. Smooth surfaces are typically made of better insulating materials
Answer: B. Smooth surfaces have greater contact area with other materials,
allowing more electron transfer and thus greater static charge buildup when
separated
● What is applied to rubber on flat leather belts to prevent the generation of static charges?
A. Petroleum-based lubricant
B. A conductive dressing — a substance applied to the belt surface that provides a
conductive path, allowing static charge to dissipate rather than accumulate
C. A rubber vulcanizing compound
D. A standard belt dressing adhesive spray
Answer: B. A conductive dressing — a substance applied to the belt surface that
provides a conductive path, allowing static charge to dissipate rather than
accumulate
● What is the best way to remove static electricity from machines?
A. Wiping the machine surface with a dry cloth
B. Grounding the machine's framework — providing a continuous conductive path to earth
so that static charges are continuously dissipated before they can accumulate to
dangerous levels
C. Spraying the machine with compressed air
D. Coating the machine with rubber insulation
Answer: B. Grounding the machine's framework — providing a continuous
conductive path to earth so that static charges are continuously dissipated before
they can accumulate
● What are the six primary methods of producing voltage?
A. Friction, gravity, magnetism, nuclear, chemical, thermal
B. Chemical action, magnetism, friction, heat, light, and pressure
