The skin effect of a conductor will reduce as the
A. Resistivity of conductor material increases
B. Permeability of conductor material increases
C. Diameter increases
D. Frequency increases
Answer: Option A
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By which of the following a bus-bar is rated?
A. Current only
B. Current and voltage
C. Current, voltage and frequency
D. Current, voltage, frequency and short time current
A. Static condenser
B. Synchronous condenser
C. Tap changing transformer
D. Booster transformer
The frequency of voltage generated, in case of generators, can be increased by
A. Using reactors
B. Increasing the load
C. Adjusting the governor
D. Reducing the terminal voltage
In aluminium conductors, steel core is provided to
A. Compensate for skin effect
B. Neutralise proximity effect
C. Reduce line inductance
D. Increase the tensile strength
Skin depth is directly proportional to resistivity of conductor.
Skin effect is inversely proportional to skin depth