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Worksheetssafety in the workshop and factors of electricity
Total questions: 20
Worksheet time: 10mins
What is the symbol used to represent the unit of electric current?
R
I
A
C
Which of the following fire extinguisher can be best used on an electrical fire.
water
carbon dioxide
foam
dry powder
The factors that can affect the resistance of a material are:
length,thickness,size, colour
length, cross-sectional area ,insulation,type of material
width,type of material, cross-sectional area, insulation
temperature,length,type of material,cross-sectional area
Which of the following is the unit for potential difference?
volt
ohm
ampere
coulomb
A physical sensation caused by an electric current reacting with the nerves is called an:
impulse
electric burn
electric shock
electrocution
The unit of resistance is:
ohms
amperes
watts
volts
Before attempting to repair an electrical circuit,ensure that:
you have the correct tool
the power supply is ON
the circuit is completed
the power supply is OFF
The force that causes electrons to move through a circuit is called:
resistance
voltage
current
power
Electric current is measured in:
ohms
coulombs
amperes
volts
A current which flows in one direction and then changes a flows in an opposite direction is called a/an:
indirect
changing
direct
alternating
The symbol used to represent resistance is:
O
E
I
R
Which of the following definition is the meaning for the abbreviation “CPR”?
Cardiac Pulse Reading
Cardiac Pulmonary Rest
Cardio Pulmonary Respiration
Cardio Pulmonary Resuscitation
The picture above shows the:
wrong technique of lifting an object
technique of placing an object on the floor
correct technique of lifting an object
correct method of checking the weight of a box
Which set substances listed below are all health hazard?
Chemical fumes, flammable chemicals and acid
Dust, animal glue and linseed oil
Paint, cement and gasoline
Grout, cement and asbestos
Which of the following are the main ways by which hazardous substances can enter the body?
Through the mouth, the skin and through the nose
Through the eyes, through the ears and through the nose
Through the skin only
Through the nose, through the eyes and through the ears
The fire extinguisher above is best used for putting out which of the following fires:
All fires
electrical,petroleum and wood fires
oil,cooking gas and electrical fires
wood,paper and textiles fires
The fire extinguisher above is best use for putting out which of the following fires?
All fires
wood and textile only
oil and flammable only
electrical only
The picture above shows the:
best technique of lifting an object
best way to drag an object
wrong technique of lifting an object
wrong way to drag an object
The opposition to the flow of an electric current is:
resistance
potential difference
power
voltage
A hazard may be defined as:
a live circuit
inadequate lighting
a damaged electrical cable
anything that can cause harm
