182. What type of motor is generally used in DC propulsion drive systems? -
ANSWER shunt wound
183. What equipment for modern SCR rectified DC propulsion drive systems is
usually included in the package? - ANSWER propulsion generators which
produce AC power that is converted to DC power for the shunt wound DC
propulsion motor
184. In a diesel-electric plant, raising the generator's field excitation current will
have what effect on the DC propulsion motor speed? - ANSWER increase in
speed
185. How is the main propeller shaft rotation of a rectified DC diesel-electric
drive normally reversed? - ANSWER reversing the field polarity in the DC
motor
519. In an azipod propulsion system, how is the azipod unit itself rotated to
direct the thrust per steering commands from the bridge? - ANSWER The
Azipod drive unit is rotated employing a hydraulic steering unit.
520. What statement is TRUE concerning the Azipod propulsion system? -
ANSWER It is an electric drive system where the propulsion motor is installed
in a submerged housing capable of swiveling.
521. In an azipod propulsion system, how is direct current delivered to the
synchronous propulsion motor rotor for synchronous operation? - ANSWER
By the use of slip rings and brushes.
522. Which of the following statement is TRUE concerning azipod propulsion
systems? - ANSWER The system integrates propulsion and steering into one
function.
ANSWER shunt wound
183. What equipment for modern SCR rectified DC propulsion drive systems is
usually included in the package? - ANSWER propulsion generators which
produce AC power that is converted to DC power for the shunt wound DC
propulsion motor
184. In a diesel-electric plant, raising the generator's field excitation current will
have what effect on the DC propulsion motor speed? - ANSWER increase in
speed
185. How is the main propeller shaft rotation of a rectified DC diesel-electric
drive normally reversed? - ANSWER reversing the field polarity in the DC
motor
519. In an azipod propulsion system, how is the azipod unit itself rotated to
direct the thrust per steering commands from the bridge? - ANSWER The
Azipod drive unit is rotated employing a hydraulic steering unit.
520. What statement is TRUE concerning the Azipod propulsion system? -
ANSWER It is an electric drive system where the propulsion motor is installed
in a submerged housing capable of swiveling.
521. In an azipod propulsion system, how is direct current delivered to the
synchronous propulsion motor rotor for synchronous operation? - ANSWER
By the use of slip rings and brushes.
522. Which of the following statement is TRUE concerning azipod propulsion
systems? - ANSWER The system integrates propulsion and steering into one
function.
