Question

Three resistances each of 12 ohms are connected in delta, their equivalent
each resistance in star will be-
Options
4 ohm
O 12 ohm
O 36 ohm
6 ohm​

Answer 1

If three resistances each of 12 ohms are connected in series, then the net will be 3x12 = 36Ω

Answer 2

Answer:

Three resistances each of 12 ohms are connected in delta, their equivalent to each resistance in the star will be 4 ohms.

Explanation:

For small distances, delta connections are commonly employed in distribution networks.

R1= 12 ohm, R2= 12 ohm and R3= 12 ohm

The resistance of the equivalent star will be

$R= \frac{R_2 \times R_3}{R_1 + R_2 + R_3}$

$R = \frac{12 \times 12}{36}$

$= \frac{144}{36}$the

R = 4 ohm