ELECTRICAL CRAFT HELPER PRACTICE PRACTICE
EXAMINATION 2026 QUESTIONS WITH ANSWERS GRADED
A+
● a molecule of matter can be divided chemically into smaller particles called?. Answer:
atoms
● matter consisting of all the same kind of atoms is called an?. Answer: element
● matter consisting of two or more different kinds of atoms is called a?. Answer: compound
● the negative charge of a single electron is called a?. Answer: unit electrical charge
● most of the mass of an atom is in the?. Answer: nucleus
● when an atom gains an electron, it is called?. Answer: negative ion
● copper is a good conductor, because the copper atom loosely holds it's?. Answer: valence
● gold and silver are good conductor of electricity, because the outer orbits have?. Answer:
one electron
● when teo negatively charged rods are brought together, they?. Answer: repel each other
● one ampere is equal to?. Answer: 1 coulomb flowing per second
● what happens when two unlike materials are rubbed together and then separated?.
Answer: one will be positive and the other negative
● connecting two or more metallic objects with a wire or metal strap is called?. Answer:
bonding
● grounding minimizes the voltage difference between an object and?. Answer: ground
● humidity has no effect in controlling a static charge on the surface of?. Answer: only liquids.
● a static charge is generated by liquids when the liquids are?. Answer: moving and contact
other materials
, ● the charges on the surface of a liquid in a container can be made harmless if the container
is?. Answer: purged
● greater static charges are developed on smooth surfaced materials than on rough surfaced
materials because of the?. Answer: larger surface contact
● what is applied to rubber or that leather belts to prevent the generation of static charges?.
Answer: a conductive dressing
● the vest way to remove static electricity from machines is to?. Answer: ground the
framework
● dust can be removed from the and in a plant by the use of a?. Answer: electrostatic
precipitation
● the six primary methods of producing a voltage are chemical action , magnetism, friction,.
Answer: heat, light, and pressure
● electricity is produced by chemical action in a?p. Answer: storage battery cell
● through which of the following do electrons move in storage battery cell?. Answer:
electrolyte
● in which type of cell does the chemical action dissolve the negative plate, which cannot be
recharged?. Answer: hot cell
● which symbol below represents a battery cell?. Answer: ___-[__+
● what is copper and iron wire junction called when heated to produce a voltage?. Answer:
thermocouple
● photoelectric device convert light energy into?. Answer: electrical energy
● what type of cell is a cadmium sulfide (Cds) cell?. Answer: photo conductive
● producing voltage by exerting a pressure on a crystalline substance is called?. Answer:
piezoelectric effect
● what is the purpose of a microphone. Answer: convert sound waves into electrical signals
● the two points of maximum attraction on a magnet are called?. Answer: magnetic materials
● how do magnetic lines of force always arrange themselves?. Answer: form closed loops
EXAMINATION 2026 QUESTIONS WITH ANSWERS GRADED
A+
● a molecule of matter can be divided chemically into smaller particles called?. Answer:
atoms
● matter consisting of all the same kind of atoms is called an?. Answer: element
● matter consisting of two or more different kinds of atoms is called a?. Answer: compound
● the negative charge of a single electron is called a?. Answer: unit electrical charge
● most of the mass of an atom is in the?. Answer: nucleus
● when an atom gains an electron, it is called?. Answer: negative ion
● copper is a good conductor, because the copper atom loosely holds it's?. Answer: valence
● gold and silver are good conductor of electricity, because the outer orbits have?. Answer:
one electron
● when teo negatively charged rods are brought together, they?. Answer: repel each other
● one ampere is equal to?. Answer: 1 coulomb flowing per second
● what happens when two unlike materials are rubbed together and then separated?.
Answer: one will be positive and the other negative
● connecting two or more metallic objects with a wire or metal strap is called?. Answer:
bonding
● grounding minimizes the voltage difference between an object and?. Answer: ground
● humidity has no effect in controlling a static charge on the surface of?. Answer: only liquids.
● a static charge is generated by liquids when the liquids are?. Answer: moving and contact
other materials
, ● the charges on the surface of a liquid in a container can be made harmless if the container
is?. Answer: purged
● greater static charges are developed on smooth surfaced materials than on rough surfaced
materials because of the?. Answer: larger surface contact
● what is applied to rubber or that leather belts to prevent the generation of static charges?.
Answer: a conductive dressing
● the vest way to remove static electricity from machines is to?. Answer: ground the
framework
● dust can be removed from the and in a plant by the use of a?. Answer: electrostatic
precipitation
● the six primary methods of producing a voltage are chemical action , magnetism, friction,.
Answer: heat, light, and pressure
● electricity is produced by chemical action in a?p. Answer: storage battery cell
● through which of the following do electrons move in storage battery cell?. Answer:
electrolyte
● in which type of cell does the chemical action dissolve the negative plate, which cannot be
recharged?. Answer: hot cell
● which symbol below represents a battery cell?. Answer: ___-[__+
● what is copper and iron wire junction called when heated to produce a voltage?. Answer:
thermocouple
● photoelectric device convert light energy into?. Answer: electrical energy
● what type of cell is a cadmium sulfide (Cds) cell?. Answer: photo conductive
● producing voltage by exerting a pressure on a crystalline substance is called?. Answer:
piezoelectric effect
● what is the purpose of a microphone. Answer: convert sound waves into electrical signals
● the two points of maximum attraction on a magnet are called?. Answer: magnetic materials
● how do magnetic lines of force always arrange themselves?. Answer: form closed loops
