Question
A transformer has a primary coil with 300 turns and a
secondary coil with 150 turns. If the primary voltage is 240V, calculate the secondary voltage.Solution
The voltage ratio in a transformer is given by the ratio of the number of turns in the primary and secondary coils: VP / VS = NP / NS. Given: Primary turns (NP) = 300 turns, Secondary turns (NS) = 150 turns, Primary voltage (VP) = 240V Secondary voltage (VS) = (VP * NS) / NP = (240 * 150) / 300 = 120 volts
Direction: Which of the following will replace ‘?’ in the given question?
5, 18, ‘?’, 126, 296, 586, 1044
5 ? 205 823 7405 29623
8   24    12    ?   18     54
15 12 5 ? -21 -40
...Direction: Which of the following will replace ‘?’ in the given question?
342, ‘?’, 420, 462, 506, 552, 60
There are three series given below which are following with the same pattern.
Series I: 21, 44, 135, 544, 2725
Series II: 14, B, C, D, E
51     53     109     332     ?     6686
...A series is 2100, 3431, 2431, 3160, 2648, 2991
If another series 1728, __, __, __, __, p, follows the same pattern as the given number series, th...
8 9 22 75 316 ?
...21 11.5 13 ? 45.5 116.75
...
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