23) Size of the wires can be measured normally by standard wire gauge (SWG). Which instrument must be used for accurate measurements of wire size ?

Vernier caliper

Depth gauge

Fuel gauge

Micrometer

Answer is:

Micrometer

Copper

Aluminium

Silver

Brass

Answer is:

aluminium gets heated up more than copper

resistivity of aluminium is greater than copper

aluminium is mechanically weaker than copper

aluminium is cheaper than copper

Answer is:

Diameter of the conductor in mm

Radius of the conductor in mm

Area of the conductor in square mm

Diameter of the conductor in inch

Answer is:

porcelain

silver

gold

copper

Answer is: