Question #500
Power controllers are crane components used for:
Nastawniki to elementy suwnicy służące do:
a
aligning the crane parallel to the runway
ustawiania suwnicy równolegle na torowisku
b
remote control of the crane mechanisms
sterowania zdalnego mechanizmami suwnicy
c
indirect control of the crane mechanisms
sterowania pośredniego mechanizmami suwnicy
d
direct control of the crane mechanisms
sterowania bezpośredniego mechanizmami suwnicy
Correct answer
Why?
Power controllers (nastawniki) provide direct control: their contacts switch the motor power circuits. With indirect control, a master controller (sterownik) sends commands and contactors switch the motor circuits.