⟩ What is air Pollution?
Contamination of the earth's atmosphere by pollutants such as smoke, harmful gases, etc.
Contamination of the earth's atmosphere by pollutants such as smoke, harmful gases, etc.
Which of the following are appropriate tests for a completed panel?
An isolator built into a panel is used for
What degree of protection is specified for protection against a BS finger?
A device with a BS EN number has been
Which of the following is statutory?
Q8 BS 7671 provides appropriate advice on
When the field windings of an electrical machine are not connected to its own armature, it is known as
Particular starting arrangements are used when a motor has a rating greater than
With a star-delta starter, the windings are brought out to a terminal box. The voltage applied to the windings at starting is
In a shunt-wound motor the field coil is connected in