Question

Calculate the voltage regulation in percentage of the transformer if the no load voltage is 240 volt and full load voltage is 220 volt? Do it with formula.

Answer 1

Given:

• no-load voltage $(E_2) = 240 volts$

• full load voltage $(V_2) = 220 volt$

To Find:

• Voltage regulation in percentage of the transformer

Solution:

The voltage regulation of transformer is  the change in secondary terminal voltage $(V_2)$ from no-load to full load at constant primary voltage and temperature.

% Regulation of transformer   $= \frac {(E_2 - V_2)}{E_2} \times 100$

Putting the value

                               $= \frac {(240 - 220)}{240} \times 100$

                               $= \frac{20}{240} \times 100$

                               $= 8.33 \%$

Thus, % Regulation of transformer  $8.33 \%$

       

Answer 2

Thus the percentage of voltage regulation is 9%.

Explanation:

We are given that:

No voltage = 240 Volts

Full load voltage = 220 Volts

To find: Voltage regulation in percentage

Solution:

The formula for voltage regulation in percentage is given by:

% Voltage regulation = V no load - V rated load / V rated load x 100

% Voltage regulation = 240 - 220 / 220 x 100

% Voltage regulation = 20 / 220 x 100

% Voltage regulation = 0.090 x 100

% Voltage regulation = 9 %

Thus the percentage of voltage regulation is 9%.