Term
| A synchro operates much like a/an _______ |
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Definition
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Term
| Synchro systems are generally classified as _______. |
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Definition
| Torque systems and control systems. |
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Term
| How many categories of synchros are there? |
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Definition
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Term
| In general, the load capacity of a synchro system is limited by _______. |
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Definition
| Size and type of transmitter. |
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Term
| In a synchro, coils S1 and S3 are _______ windings. |
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Definition
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Term
| What component(s) make up a simple torque synchro system? |
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Definition
| A torque transmitter (TX) and a torque receiver (TR) |
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Term
| In a 26 VAC synchro system, when the rotors are in correspondence on 0deg. the stator voltages will be _____ VAC. |
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Definition
| S1 = 26, S2 = 52, S3 = 26 |
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Term
| How many step repeaters may be powered from an internal power source? |
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Definition
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Term
| Which component is part of the MK 27 gyro system? |
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Definition
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Term
| Which component houses the operating controls, follow-up servo amplifier, alarm circuitry, power supply, and latitude control circuitry? |
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Definition
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Term
| The J3 test point allows troubleshooting of the ____. |
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Definition
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Term
| To drive up to two step-by-step repeaters in the gyrocompass system, the switching unit provides ______ VDC. |
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Definition
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Term
| The MK-27 gyroscope does NOT provide _____. |
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Definition
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Term
| The two basic properties of gyroscopes are _____. |
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Definition
| Rigidity in space and precession |
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Term
| What term can be defined as the tendency of the gyro wheel spin axis to remain in a fixed direction in space if no force is applied to it? |
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Definition
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Term
| The axis of rotation has a tendency to turn at a right angle to the direction of an applied force describes _____. |
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Definition
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Term
| By applying a weight to the bottom of the vertical ring, a _____ gyroscope is created. |
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Definition
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Term
| What letters are used to designate the anemometer wind speed indicating circuit? |
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Definition
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Term
| Power requirements for the Belfort model 135 Aerovane indicator are _____. |
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Definition
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Term
| The output from the newer type of wind direction and speed indicator is used for _____. |
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Definition
| Visual indication and global positioning systems. |
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Term
| What device in the Belfort 135 Aerovane indicator system displays wind speed? |
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Definition
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Term
| What device measures wind speed and direction and transmits the information to remotely located indicators? |
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Definition
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Term
| How many HG synchros are in the transmitter of a wind speed indicator system? |
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Definition
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Term
| The proper corrective procedure for a faulty wind speed transmitter magneto is to ______. |
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Definition
| Replace it or return it to the nearest dealer or the manufacturer for repair. |
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Term
| With an 1150-ohm load connected across the magneto terminals and the shaft rotated at 1800 rpm, the voltage output should be _____. |
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Definition
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Term
| The function of the capacitor on the wind speed magneto is to _____. |
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Definition
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Term
| What must be done when two Belfort 135 Aerovane indicator units share a signal from one wind speed/direction transmitter? |
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Definition
| The 2300-ohm resistor must be removed from both indicators. |
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Term
| The salinity indicating system is specifically designed to accurately measure the salinity of water in the ship's ____. |
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Definition
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Term
| An audible and visual alarm activates when distillate contains ____ grains or more of salt. |
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Definition
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Term
| Electrical conductivity of a distillate is determined by the amount of _____. |
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Definition
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Term
| In a salinity cell system, the function of the thermistor is to act as a temperature sensitive ____. |
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Definition
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Term
| What are the three major parts of the salinity indicating system? |
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Definition
| Meter circuit, alarm circuit, and dump system. |
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Term
| The voltage from the alarm setting control circuit that the voltage measured across the salinity sensor's plate gap is compared to, is called the ____ voltage. |
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Definition
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Term
| What causes the dump valve to divert water overboard? |
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Definition
|
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Term
| What is the term used to descrive the change in resistance due to temperature variations, when the resistance of a device decreases when the temperature is increased? |
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Definition
| Negative temperature coefficient |
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Term
| Which indicator lamp(s) is NOT provided on the salinity cell indicaor panel? |
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Definition
| Potable water tank full alarm |
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Term
The supervisory circuit in the typical alarm system monitors for ____. |
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Definition
malfunctions within the alarm circuit |
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Term
| What does a yellow visual indicator on the alarm system switchboard indicate? |
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Definition
| Trouble condition in an alarm circuit. |
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Term
| What type of sensing unit is commonly used in flooding alarm systems to detect the presence of compartmental flooding? |
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Definition
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Term
| The purpose of VLA lighting systems is to provide lighting for _____. |
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Definition
| Safe helicopter operations |
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Term
| The voltage requirement for the homing beacon light is _____ volts AC. |
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Definition
|
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Term
| What type of lamps is used in deck edge lighting? |
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Definition
| Red omnidirectional lamps |
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Term
| Deck edge lighting is connected to the _____ step-down transformer. |
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Definition
| Low voltage side of a 115/12-volt |
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Term
| Extended line-up lights are _____ in color. |
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Definition
|
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Term
| Which VLA lighting systems does the flasher sequencer control? |
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Definition
|
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Term
| The helicopter in-flight refueling lights (HIFR) provide _____. |
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Definition
| The pilot a visual indication of the ship's heading at all times and provide a height reference during in-flight refueling operations. |
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Term
| Spacing of the HIFR lights is every ____ feet. |
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Definition
|
|
Term
| What are the power requirements for the VLA lighting control panel? |
|
Definition
|
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Term
| The detector circuit of the motor-driven variable transformer receives its input from _____. |
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Definition
| Remote control potentiometer. |
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Term
| The wave-off light system provides a visual indication to the pilot that the landing conditions are _____. |
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Definition
|
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Term
| The function of the remote override switch is to _____. |
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Definition
| Disable all remote stations from initiating a wave-off. |
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Term
| What are the basic components of the steering system on a Coast Guard ship? |
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Definition
| Steering controls, hydraulic system, rudder feedback system, emergency system. |
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Term
| In the primary mode, the steering system operatis in the _____ mode. |
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Definition
| follow-up, non follow-up, autopilot. |
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Term
| What are the main and emergency power sources for the steering system? |
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Definition
|
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Term
| What is the maximum allowable amount of degrees between any of the rudder angle indicators and the mechanical rudder angle indicator that is connected to the rudder gear? |
|
Definition
|
|
Term
| What term is defined as the average speed that the stering system ratates the rudder under full power and full pump displacement? |
|
Definition
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|
Term
| A variable-speed, electric motor-driven, oscillating arm wiper, with a totally enclosed drive unit, describes which wiper system? |
|
Definition
|
|
Term
| How many different types of control units does the straight line window wiper system have? |
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Definition
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|
Term
| What window wiper system uses heat from the motor to prevent the formation of condensation? |
|
Definition
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Term
| The function of a battery charging system is to _____. |
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Definition
| replace the electrical energy that a storage battery has consumed during its use. |
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Term
| Extended normal charge given at the finishing rate to ensure that all the sulfate is driven from the plates and that the cells are restored to a maximum specific gravity is known as a/an ______ charge. |
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Definition
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Term
| The component that senses the state of charge of the batteries is the _____ circuit. |
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Definition
| saturable reactor sensing. |
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Term
| The component that converts AC current to DC in a charging system is known as a ______. |
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Definition
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Term
| Rated frequency for a motor or generator can be located _____. |
|
Definition
| on the machine's nameplate data. |
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Term
| What information will be found on the calibration sticker for a hand-held tachometer? |
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Definition
| Calibration date, calibration due date |
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Term
| One of the advantages of using milliamp signal as an output signal is that _____. |
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Definition
| A signal can be transmitted over much longer distances. |
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Term
| The first step in troubleshooting a transducer is to ______. |
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Definition
| Verify that the transducer is the problem. |
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|
Term
| If the same type and range pressure transducer is not availavle you may replace it with _____. |
|
Definition
|
|
Term
| What procedures must be performed before renewing a transducer? |
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Definition
| Remove electrical power, tag out, and ensure the system is not under pressure. |
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|
Term
| When calibrating a pressure transducer you should NEVER ______. |
|
Definition
| over pressurize the transducer. |
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|
Term
| The two types of elements for a resistance temperature detector are _____. |
|
Definition
|
|
Term
| What are the three types of RTD configuration? |
|
Definition
| Thermowell, Bare bulb, and Embedded. |
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|
Term
| One of the procedures for troubleshooting the RTD is to take a ______. |
|
Definition
|
|
Term
| The function of a thermocouple is to measure ____. |
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Definition
|
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Term
| Thermocouples will produce what type of electrical output? |
|
Definition
|
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Term
| As the ambient air temperature changes, the cold junction will begin to produce its own electrical potential. This would cause an erroneous reading of the actual thermocouple. What concept does this statement describe? |
|
Definition
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|
Term
| The correct color coding for a type K thermocouple is ____. |
|
Definition
|
|
Term
| The correct color coding for a type J thermocouple is _____. |
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Definition
|
|
Term
| The dissimilar metals used in a type J thermocouple are ______. |
|
Definition
|
|
Term
| The dissimilar metals used in a type K thermocouple are ______. |
|
Definition
|
|
Term
| Part II of the (MICA) contains ______. |
|
Definition
| Section B- APL's -- Hull, Mechanical, and Electrical (HM&E), and Section C - AEL's -- Hull, Mechanical, and Electrical. |
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|
Term
| Supply information is broken down into a series of categories iwth each type of information displayed in a _____. |
|
Definition
|
|
Term
| What provides quick links to different screens in FEDLOG? |
|
Definition
|
|
Term
| A Unit's OPFAC, a department code, a COG code, a stock number , a Unit of issue, a Quantity needed, a cost of each unit, a nomenclature and supplier are all required to fill out a ______. |
|
Definition
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|
Term
| Your name, phone number, routing symbol, originating office data, approving officials, price, stock check, person supplying price information, and the name, address, and phone number of the supplier, and shipping cost, are all required to fill out a ______. |
|
Definition
| Commercial procurement request form. |
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Term
| What provides simplified acquisition and accounting functions for large units of the U.S. Coast Guard? |
|
Definition
| Financial and procurement desktop software. |
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|
Term
| What is scheduled routinely, and helps to predict and prevent equipment and system failures that could impact the operation and safety of the unit? |
|
Definition
|
|
Term
| What are the four sections of the Maintenance Procedure Card? |
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Definition
| Auxiliary, Electrical, Main Propulsion/Machinery, Damage Control |
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|
Term
| Recommended changes to a PMS procedure must be in letter form and submitted to the _____. |
|
Definition
|
|
Term
| COMDTINST 9077.1 (Series), a copy of the authorized officer's letter(s), Danger/Caution Tag-Out Index and Records of Audits sheet, Active log, Inactive log, Instrument log, Spare log sheets are all contained in a ____. |
|
Definition
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|
Term
| Damaged or missing tag-out tags are replaced by _____. |
|
Definition
| annotating in the danger/caution tag-out log the tag is missing/damaged in the clearance/position condition column on the line corresponding to the tag number. A new tag shall be issued using the next sequential number. |
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|
Term
| Audits should be performed on the tag-out log ____. |
|
Definition
|
|
Term
| Motor insulation temperature of 10degC or higher than the manufacturer's recommendation will shorten the insulation life by _____. |
|
Definition
|
|
Term
| Why do you check winding temperatures on motors and generators? |
|
Definition
| To compare insulation resistance measurements. |
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|
Term
| What chart must be used to correct insulation resistance measurements to 25degC? |
|
Definition
| Insulation resistance-temperature nomograph. |
|
|
Term
| What are the procedures for checking winding temperatures? |
|
Definition
| Thermometer method or resistance method. |
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|
Term
| The purpose of the polarization index test is to determine the condition of the _____. |
|
Definition
|
|
Term
| What is the purpose of checking the air gaps of motors and generators? |
|
Definition
| To monitor bearing wear or rotor inconcentricity. |
|
|
Term
| What is the name of the tool used to measure the air gap on motors and generators? |
|
Definition
| Machinist's tapered feeler gauge. |
|
|
Term
| Air gaps should be nearly equal or within _____ of each other. |
|
Definition
|
|
Term
| What instrument is used to check phase balance on motors or generators? |
|
Definition
|
|
Term
| Phase imbalance on a three-phase motor will cause damage to the windings due to _____. |
|
Definition
|
|
Term
| Before working on any electrical system, ensure all ____ procedures are followed. |
|
Definition
|
|
Term
| What are the only two acceptable methods for installing bearings? |
|
Definition
| Arbor press method and heat method. |
|
|
Term
| The brush holder's distance from the commutator should be not more than ____ of an inch, nor less than ____ of an inch. |
|
Definition
|
|
Term
| If brushes are staggered, follow the correct method of installation to prevent ____. |
|
Definition
| Grooving of the commutator. |
|
|
Term
| The preferred method of seating brushes to the commutator is _____. |
|
Definition
| Wrap 80 grit sandpaper around collector and manually rotate rotor in direction of rotation 5-6 times. |
|
|
Term
| Alignment is the process of adjusting two or more machines that are coupled together so their ____ form one continuous straight line. |
|
Definition
|
|
Term
| The term thermal growth is defined as _____. |
|
Definition
| The amount of change in relative shaft position that occurs when horizontally mounted machinery changes from room temperature to operating temperature. |
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|
Term
| What is teh maximum alignment condition that will not cause damage to the machinery during a prolonged period of time and operation? |
|
Definition
|
|
Term
| If a soft foot condition has not improved after two correction attempts, a ______. |
|
Definition
| bent foot condition may exist. |
|
|
Term
| What must be completed before an alignment can be performed? |
|
Definition
| Correct any soft foot or misaligned piping. |
|
|
Term
| What is the preferred method for checking pump shaft alignment? |
|
Definition
| Indicator reverse method. |
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