Org Chart
A technical worker in construction and manufacturing industries is paid more than a skilled or semi-skilled worker because they have
Higher levels of knowledge and skills
Define Voltage
state unit?
is the electric pressure or push from a power source
e.g. water pump
Volts
What type of fire extinguishers are used for electrical fires?
carbon dioxide or dry powder
What is ohm law formula?
V= I X R
PPE Means
Personal protective Equipment
Which of the following members of the building team carries the greatest level of responsibility on the construction site
Contractor, civil engineer, projector manager, trade foreman
Project manager
Define Current?
What is it measured in?
is the flow rate of electrons through a conductor
measured in amperes A
What is a common workplace injury?
Back injury
What is resistivity formula?
R= Pl/A
State two effects of an electric current in a circuit.
Lighting effect
Heating effect
magnetic effect
chemical effect
The role of civil and structural engineering is to produce buildings for
domestic use,
the banking sector,
industrial use, public use
Public use
What is Frequency?
What is it measured in?
is the number of cycles per second.
measured in Hz
Good housekeeping will
Prevent incidents
What is temperature coefficient formula?
R
A potentiometer is
a variable resistor
what's the formula for resistors in series?
R1 + R2
What is resistivity?
is the property of a material that quantifies how strongly it resist the flow of electric current.
When grinding which PPE is best suitable?
Eye protection
State Ohm law formula.
V=I x R
What is an insulator?
Name an example
Blocks the flow of electrons
Glass, rubber, wood
what's the formula for two resistors in parallel?
Product/sum
What is temperature coefficient?
describes the relative change in a physical property when resistance changes.
what are construction standards
ANSI, BSI, ISO
state the formula for temperature coefficient of resistance?
Rf=Ro(1+alpha t)
what is a conductor?
Give an example?
Allows the free flow of electrons
examples copper, aluminum