A transformer operates at Vp = 6 kV on the primary side and supplies electric energy at Vs = 220 V to a number of houses in a town. If the total power consumption of the town is 7.2 kW, the current (in amperes) in the primary is

Question

A transformer operates at Vp = 6 kV on the primary side and supplies electric energy at Vs = 220 V to a number of houses in a town. If the total power consumption of the town is 7.2 kW, the current (in amperes) in the primary is (A) 2 (B) 1.2 (C) 2.5 (D) 3

Tardigrade Admin · Accepted Answer

P0=Pi ⇒ 7.2 kW =6 K V × I or I=1.2 A

Q. A transformer operates at $V_{p} = 6 kV$ on the primary side and supplies electric energy at $V_{s} = 220 V$ to a number of houses in a town. If the total power consumption of the town is $7.2 kW$ , the current (in amperes) in the primary is

$2$

$1.2$

$2.5$

$3$

$1$

$P_{0} = P_{i}$
$\Rightarrow 7.2 kW = 6 K V \times I$
or $I = 1.2 A$

Q. A transformer operates at Vp​=6kV on the primary side and supplies electric energy at Vs​=220V to a number of houses in a town. If the total power consumption of the town is 7.2kW, the current (in amperes) in the primary is

2

1.2

2.5

3

1

P0​=Pi​ ⇒7.2kW=6KV×I or I=1.2A

Q. A transformer operates at $V_{p} = 6 kV$ on the primary side and supplies electric energy at $V_{s} = 220 V$ to a number of houses in a town. If the total power consumption of the town is $7.2 kW$ , the current (in amperes) in the primary is

$2$

$1.2$

$2.5$

$3$

$1$

$P_{0} = P_{i}$
$\Rightarrow 7.2 kW = 6 K V \times I$
or $I = 1.2 A$