As shown in the two illustrations for 'pitch control' and engine speed control', when the plant is in 'AUTO / CRUISE' propeller pitch is controlled by ___________. EL-0095 A. the 'trim potentiometer' and speed by either 'thrust lever' B. either 'thrust lever' and speed also by the selected Lever C. the split trim potentiometer and speed by its 'trim pot'. D. either 'thrust lever' and speed by the 'trim potentiometer'

1 Answer

Answer :

Answer: D

Related questions

Description : If Relay #5 changed contact position grounding the 'auto' input to the 'pitch controller module', pitch control would be effected by the _________________. EL-0095 A. pitch feedback potentiometer B. Engine room thrust split potentiometer C. Engine room thrust lever only D. Bridge thrust lever only

Last Answer : Answer: B

Description : Vessel pitch can be controlled by either the 'bridge or engine room thrust lever' shown in the illustration; but only with one engine on the line whether in 'cruise or maneuver' mode. The cause is most likely a faulty relay _____________. EL-0095 A. #1 B. #2 C. #3 D. #4

Last Answer : Answer: D

Description : In the pitch control diagram shown in the illustration, what are the present plant operating conditions? EL-0095 A. One engine is on the line, cruise mode is selected and the engine room is in control. ... . D. Both engines are on line, maneuvering mode is selected and the engine room is in control.

Last Answer : Answer: D

Description : As shown in the illustration, a 'pitch cutback' feature is incorporated in the system. This circuit reduces pitch amount to prevent engine overload when it senses ____________. EL-0095 A. pitch error of ... servo' C. excessive propeller speed or fuel to either engine D. only one engine on the line

Last Answer : Answer: C

Description : A faulty 'function generator' shown in the illustration may prevent _____________. EL-0095 A. proper pitch control from both the 'bridge' and 'engine room thrust levers' B. the 'split potentiometer ... control pitch C. the pitch meter from indicating accurately D. relays #2 and/or #3 from energizing

Last Answer : Answer: A

Description : As shown in the illustration, the circuit which 'shapes' the linear output of the thrust lever so that the steady-state ship speed is linear with respect to that lever's setting is the _____________. EL-0095 A. 'pitch controller' B. 'error amplifier' C. 'function generator' D. 'servo amplifier'

Last Answer : Answer: C

Description : The 'pitch controller module' shown in the illustration is fed the actual pitch position of the propeller from the _____________. EL-0095 A. 'pitch meter' B. 'pitch feedback potentiometer' C. #5 relay position D. pitch error signal

Last Answer : Answer: B

Description : The meter indicating the position of the 'bridge Thrust lever' shown in the illustration is located ___________________. EL-0095 A. in the Engine Control Room B. on the Bridge C. in the Captain's office D. in the Chief Engineer's office

Last Answer : Answer: A

Description : Considering the function of the circuit shown in the illustration, what is the purpose of supplying the thrust lever potentiometers with both (+) and (-) 15 volts? EL-0095 A. To select which ... alternate voltage supply if the other fails. D. So as to automatically select the position of Relay #

Last Answer : Answer: B

Description : What are the plant conditions existing in the 'engine speed control' diagram shown in the illustration? EL-0096 A. The Bridge is in control in the 'auto. maneuver' mode. B. The Engine Room is in control in ... in the 'auto. split' mode. D. The Engine Room is in control in the 'auto. maneuver' mode.

Last Answer : Answer: D

Description : As shown in the illustrations, ordered rudder angle is fed back from the ________________. EL-0097 A. power unit to the magnetic amplifier B. steering gear to the control potentiometer C. magnetic amplifier to the steering gear D. rudder yoke to the non-followup controller

Last Answer : Answer: A

Description : As shown in the illustration, when the 'speed control' system is in 'SPLIT' _______________. EL-0096 A. Relays #1, #5 and #8 are not used B. the 'slew rated controller' is grounded through Relay ... E/P converters' are bypassed and air is fed directly to the governors via the 'load sharing valve'

Last Answer : Answer: C

Description : The advantage of a constant speed propeller over a fixed pitch propeller is: a. Higher maximum thrust available b. Higher maximum efficiency c. More blade surface area available d. Nearly maximum efficiency over wide speed range

Last Answer : d. Nearly maximum efficiency over wide speed range

Description : Which statement best describes the operating principle of a constant-speed propeller? a. As throttle setting is changed by the pilot, the prop governor causes pitch angle of the propeller blades to ... the pilot, the RPM of the engines remains constant as the pitch angle of the propeller changes

Last Answer : b. The propeller control regulates the engine RPM and in turn the propeller RPM

Description : As shown in the illustrations, fine adjustments such as 'weather' and 'turning rate' have no effect on steering stand operation when the 'operation control switch' is in ____________. EL-0097 A. GYRO B. HAND C. NFU D. DIFF

Last Answer : Answer: C

Description : The 'function generator' of the control circuit illustrated _______________. EL-0095 A. can be programmed to produce a non-linear output for a linear input depending on operating conditions B. is used for ... which or how many engines are needed for a required vessel speed D. all of the above

Last Answer : Answer: A

Description : The angle of attack of a fixed pitch propeller: a. Depends on forward speed only b. Depends on forward speed and engine rotational speed c. Depends on engine rotational speed only d. Is constant for a fixed pitch propeller

Last Answer : b. Depends on forward speed and engine rotational speed

Description : How many modes of rudder positioning are available using the steering stand shown in the illustrations? EL-0097 A. One B. Two C. Three D. Four

Last Answer : Answer: C

Description : As shown in the illustrations, feedback or rudder angle repeatback is used by the steering stand in which operational modes? EL-0097 A. Gyro-compass and hand steering only B. Hand steering and non-followup only C. Non-followup and gyro-compass only D. Gyro-compass and synchronizing only

Last Answer : Answer: A

Description : In an AC synchronous motor electric propulsion plant, propeller speed is controlled by varying the _____________. A. prime mover speed B. electric coupling field strength C. number of energized main motor poles D. propulsion generator field strength

Last Answer : Answer: A

Description : The electrical device shown in the illustration is a/an _____________. EL-0077 A. operating coil B. indicating lamp C. motor armature D. potentiometer

Last Answer : Answer: D

Description : In the illustrated amplifier, the RESET potentiometer A1R2 sets the stability of the control loop by changing the reset time constant. As the potentiometer is turned clockwise _________. EL-0060 A. ... is increased to the summing point at terminal 5 D. response time is increased decreasing stability

Last Answer : Answer: B

Description : Which of the synchroscope illustrations depicts the appropriate direction of rotation and position for closing the circuit breaker when paralleling AC generators? EL-0053 A. A B. B C. C D. D

Last Answer : Answer: D

Description : Which of the illustrations listed below is representative of a motor controller's 'wiring' or 'connection' diagram? Book A. EL-0023 B. EL-0024 C. EL-0037 D. EL-0058

Last Answer : Answer: A

Description : Which of the illustrations listed below is representative of a motor controller's 'schematic' or 'elementary' diagram? A. EL-0023 B. EL-0007 C. EL-0037 D. EL-0058

Last Answer : Answer: B

Description : Which of the listed conditions occur when '4th point lower' is selected on the winch shown in the illustration? EL-0102 A. Master switch contacts '3', '4', '6', '8', '9', & '10' close. B. Contactors '2, 3, & 4M' and ' ... , '7', '8', and '9' close. D. Contactors '1 & 3M' and '1, 2, & 3A' pick up.

Last Answer : Answer: B

Description : The purpose of the bias winding in figure 'B' shown in the illustration is for ____________. EL-0091 A. changing the direction of current in the control winding B. setting the operating point of the ... use of either AC or DC in the load circuit D. changing the direction of current through the load

Last Answer : Answer: B

Description : When three-phase AC power is supplied to the device shown in the illustration, the output will be _____________. EL-0063 A. single-phase AC B. split-phase AC C. three-phase DC D. unidirectional DC

Last Answer : Answer: D

Description : The diagrams shown in the illustration represent a/an _______________. EL-0093 A. engine order telegraph circuit B. rudder angle indicator arrangement C. engine speed tachometer with repeaters D. sound powered telephone system

Last Answer : Answer: D

Description : In order to decrease the resistance of the 50K pot located at '21Q/R' shown in the illustration, the wiper of the actual component must be moved ____________. EL-0099 A. to the left B. to the right C. clockwise D. counterclockwise

Last Answer : Answer: D

Description : As shown in the illustration, once the "LV" relay is energized for operation, what contacts must remain closed to maintain the "LV" relay energized when the control lever is moved away from the "off" or "stop" ... . B. Reset contacts. C. Upper set of "LVa" contacts. D. Lower set of "LVa" contacts.

Last Answer : Answer: C

Description : The electrical diagram shown in the illustration represents a ___________. EL-0054 A. series-wound motor B. shunt-wound motor C. compound-wound motor D. flat-compounded motor

Last Answer : Answer: C

Description : The purpose of the automatic bus transfer shown in the illustration is to ___________. EL-0014 A. stepdown voltage to the lighting distribution panel B. provide emergency power to ... emergency switchboard from the main switchboard D. provide overcurrent protection to the lighting distribution panel

Last Answer : Answer: B

Description : When reading AC current with the multimeter shown in the illustration and you are unsure of the range, the range switch should be set to ___________. EL-0047 A. 10 MA/ 10 AMP with leads in the (-10 A ... leads in the (-COMMON) and (+10 A) jacks D. unable to measure AC current with this multimeter

Last Answer : Answer: D

Description : When attempting to measure a current of less than 10 amps with the device shown, the range switch should be set to ___________. EL-0047 A. 500 MA B. 10 MA / AMPS with leads in the (-COMMON) and (+) jacks C. 10 MA ... ) and (+10 A) jacks D. 10 MA / AMPS with leads in the (-10 A) and (+10 A) jacks

Last Answer : Answer: D

Description : The 'reset' contacts of the master switch shown in the illustration provides the winch controller with ___________. EL-0102 A. low voltage release B. overload protection C. low voltage protection D. high power factor correction

Last Answer : Answer: C

Description : As shown in the illustration, 'H1' and 'H2' are ___________. EL-0058 A. fixed capacitors B. variable capacitors C. contacts, closed when the circuit is energized D. contacts, open when the circuit is energized

Last Answer : Answer: D

Description : An open-circuit fault between the pressure switch and the 'annunciator module' shown in the illustration would cause the alarm circuit to react in the same manner as if ___________. EL-0094 A. 3.5 ... below switch setting C. 50 PSI were applied to the 'setpoint module' D. the pressure switch closed

Last Answer : Answer: B

Description : Figure 'B' shown in the illustration represents a/an ____________. EL-0067 A. silicon controlled rectifier B. junction field effect transistor C. diac thyristor D. IG MOS field effect transistor

Last Answer : Answer: A

Description : Figure 'C' shown in the illustration represents a _________. EL-0078 A. silicon controlled rectifier B. light emitting diode C. photosensitive diode D. Zener diode

Last Answer : Answer: C

Description : Figure 'A' of the diagram shown in the illustration represents a/an ____________. EL-0078 A. silicon controlled rectifier B. IG or MOS field effect transistor C. triac thyristor D. junction field effect transistor

Last Answer : Answer: B

Description : Figure 'D' shown in the illustration represents a _________. EL-0067 A. silicon controlled rectifier B. light emitting diode C. photosensitive diode D. Zener diode

Last Answer : Answer: B

Description : Figure 'B' of the diagram shown in the illustration represents a/an ____________. EL-0065 A. silicon controlled rectifier B. junction field effect transistor C. diac thyristor D. IG or MOS field effect transistor

Last Answer : Answer: B

Description : The symbol in figure 'A' shown in the illustration represents a ____________. EL-0065 A. diac B. field effect transistor C. silicon controlled rectifier D. unijunction transistor

Last Answer : Answer: D

Description : The purpose of an impressed current cathodic protection system aboard ship is to _______________. A. prevent corrosion of the hull, propeller, rudder and line shafting B. neutralize the vessel's ... the presence of salt air D. maintain a minimum constant alternator load to prevent overheating

Last Answer : Answer: A