SSC JE Electrical Engineering 2013 Paper

Question : 170 of 200

Marks: +1, -0

The high-voltage and low-voltage winding resistances of a distribution transformer of 100 KVA, 1100/220 volts, 50 Hz are 0.1 Ω and 0.004 Ω respectively. The equivalent resistances referred to high-voltage side and low-voltage side are respectively

2.504 Ω and 0.2 Ω
0.2 Ω and 0.008 Ω
0.10016 Ω and 2.504 Ω
0.008 Ω and 0.10016 Ω

Validate

Solution:

Equivalent resistance referred to HV site

R_01=R_1+R_2^1

=R_1+R_2/K^2

= 0.1 + 0.004 (5)^2= 0.2

Equivalent resistance refer to LV site

R_02=R_2+K^2R_1

=0.004+(1/5)^2×0.1

= 0.008 Ω

Go to Question:

Prev Question

Next Question