Question

A heater is rated as 230 V, 10 KW, A.C. The value 230 V refers to (a) average voltage

(b) r.m.s. voltage (c) peak voltage (d) none of the above​

Answer 1

Answer:

Abdul while driving to school computes the average speed for his trip to be 20 kmh1.

On his return trip along the same route,there is less traffic and the average speed is 30kmh-1.What is the average speed for Abdul's travel?

Explanation:

option c is correct

Answer 2

Answer:

The value 230 V in the heater refers to r.m.s. voltage. Option (b) is correct.

Explanation:

• The maximum value of the voltage is called peak voltage.
• When the peak voltage is divided by the square root of two, we get the r.m.s. voltage.

The value of the AC voltage changes continuously with time. So, it is important to calculate the r.m.s. voltage. RMS voltage allows us to compare with the value of DC voltage which is constant. The rating of an electrical appliance is done in the form of an r.m.s. voltage value.

So, the value 230 V refers to r.m.s. voltage.

Option (b) is correct.