A mathematical model of automatic generation control for hydroelectric station is established, and a solution method to AGC mathematical model on multi-nozzle scoop-type turbines is proposed.

A mathematical model of automatic generation control for hydroelectric station is established, and a solution method to AGC mathematical model on multi-nozzle scoop-type turbines is proposed.

For the usage of the spade soil opener in a punch planter the precision metering device with declined scoop type disc was selected for maize seeds.