Question

The speed regulation can be expressed as

* Ratio of change in frequency from no load to full load to the rated frequency of the unit.
*Ratio of change in frequency to the corresponding change in real-power generation.
*both a & b
*none of these​

Answer 1

The speed regulation can be expressed as ratio of change in frequency  from no load to full load to the rated frequency of the unit.

Given:

The speed regulation can be expressed as -

To Choose:

( i ) Ratio of change in frequency from no load to full load to the rated frequency of the unit.

(ii) Ratio of change in frequency to the corresponding change in real-power generation.

(iii) both a & b

(iv) none of these​

Explanation :-

The speed regulation;

• The speed regulation is defined as the change in speed from no load to full load.
• It expressed as a fraction or percentage of full load speed.

• Per unit speed regulation can also be defined as the ratio of the difference between no load to full load with respect to the full load.

Here, (i) option is correct .

Hence, the speed regulation can be expressed as ratio of change in frequency  from no load to full load to the rated frequency of the unit.