The efficiency of a transformer is mainly dependent on a)- Core losses
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<h2>
Answer:</h2>
7532V
<h2>
Explanation:</h2>
For a given transformer, the ratio of the number of turns in its primary coil (
) to the number of turns in its secondary coil (
) is equal to the ratio of the input voltage (
) to the output voltage (
) of the transformer. i.e
= 
----------------(i)
<em>From the question;</em>
= number of turns in the primary coil = 8 turns
= number of turns in the secondary coil = 515 turns
= input voltage = 117V
<em>Substitute these values into equation (i) as follows;</em>
= 
<em>Solve for </em><em>;</em>
= 117 x 515 / 8
= 7532V
Therefore, the output voltage (in V) of the transformer is 7532
Answer:
C
Explanation:
Sumerians invented new technologies and perfected the large-scale use of existing ones. In the process, they transformed how humans cultivated food, built dwellings, communicated and kept track of information and time
Answer:
10 ft or 3.048 m (for unqualified person)
1.09 ft or 0.33 m (for qualified person)
Explanation:
OSHA has prescribed "Minimum Approach Distance - MAD" to ensure safety of personnel working with electrical power lines.
For a unqualified person:
The minimum approach distance is 10 ft or 3.048 m
For a qualified person:
For a voltage in the range of 300V to 750V (Phase to Ground or Phase to Phase) the minimum approach distance is 1.09 ft or 0.33 m
Since 600V lies in the above range hence it is applicable on 600V.
OSHA has developed a full list of minimum approach distance according to the level of voltages (50V to 72000V)
