In the loaded-frequency control system with tree governor action, the increase in load demand under steady condition is met,
- A. only by decrease of load demand due to drop in system frequency
- B. only by increased generation due to opening of steam valve
- C. partly by increased generation and partly by decrease of load demand
- D. partly by increased generation and partly by increased generator excitation
Answer: B. only by increased generation due to opening of steam valve
Explanation: Under steady conditions with free governor action, any frequency/speed drop actuates the governor to open the turbine steam/water valve, meeting the load demand entirely through increased generation.