Gas Turbine Systems Technician – Electrical (GSE) A Test 2 Practice

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• What is the output voltage of the UPS to the SCU?
• A power factor of 0.8 lagging indicates what about the load?
• What is the function of the Shaft Control Unit (SCU)?
• If the main power switch is turned on, how long until battery charging begins?
• What is the purpose of line reactors or harmonic filters in electrical systems?
• Define THD and why high THD is undesirable in electrical systems.
• Which of the following is NOT monitored by the Fuel Control System?
• What does the thermal ionization detector in the CTM/TID system do?
• What is the exact designation used to describe the switch that routes voltage from the UPS to the transfer switch?
• In the terms used for electrical distribution, which configuration maintains power by feeding loads from a common ring while allowing parallel paths?
• Which system uses protective devices to isolate excessive flow in the electrical distribution system?
• Which protective relay is used to protect transmission lines based on impedance measurements?
• What is the impedance seen from the primary of a transformer with turns ratio a and secondary impedance Z_load?
• Which component is involved when routing UPS voltage to the transfer switch?
• Which action is commonly necessary first when performing UPS maintenance in the SCU environment?
• Which statement about the DC power supplies PS1 and PS2 is correct?
• How many power supply assemblies does the Shaft Control Unit include?
• What does the Emergency Override Manual Panel contain?
• What is the purpose of the quick test regarding batteries?
• What converts AC to DC for the UPS to charge its battery?
• Explain the difference between a Wye (Y) and Delta (Δ) transformer connection and how it affects line voltages and currents.
• Which of the following describes the waiting time before battery charging begins after the main power is activated?
• What protection function is designed to detect a loss of rotor field current in a generator?
• Which system provides alternate electricity sources for critical loads?
• What is the purpose of the Fuel Control System?
• Where can the AUDIBLE ALARM TEST buttons be found on the DCC?
• What component allows up to 13 drops with a single bus connection?
• How do batteries supply +115 VDC to the transfer switches?
• The Repair Station Console (RSC) acts as a backup for what primary console?
• What is the purpose of synchrophasor or phase signals in parallel operation of generators?
• The electronic short circuit trip device trips instantaneously at what current?
• What are common reasons a generator fails to synchronize and how would you troubleshoot?
• How many drops does the Universal Sensor Interface Module (USIM) have?
• What is the function of a brushless excitation system in a synchronous generator?
• Which system is designed to identify potential conditions that could lead to arc faults specifically in switchboards or load centers?
• Which component is used to regulate motor speed by monitoring the drive's rotation?
• How long must a UPS provide power to a console?
• What is the function of bus differential protection in a power system?
• Which statement best describes reactive power?
• Which protective relay is used for internal faults within the protected zone?
• Which of the following best describes the signals that coordinate turbine start and electrical synchronization?
• Which component within CTM/TID performs insulation degradation detection by sampling air?
• Which multimeter must be used for resistance readings during console manual ground testing?
• What component prevents power from flowing from the distribution system to an offline generator?
• Which expression represents apparent power in a three-phase system?
• What is the purpose of proper grounding and bonding in electrical systems?
• Which two assemblies are included in the UPS Control Module?
• Which statement accurately describes the difference and triggers between overvoltage protection and undervoltage protection?
• What is the function of the automatic steering control panel (ASCP)?
• In a battery quick test, which indicator is lit to show battery usage?
• How many bus ties are used to interconnect the switchboards?
• Which console redirects power to critical loads during casualties?
• During the battery quick test, which LED color indicates battery power is in use?
• How is an insulation resistance test performed on a generator stator winding and how are the results interpreted?
• How long is an uninterruptible power supply (UPS) designed to provide power?
• What component continuously samples the switchboard atmosphere?
• What does the Low Voltage Protection (LVP) do during casualty situations?
• Why do we perform insulation resistance tests?
• Which device prevents power from flowing from the distribution system to an offline generator?
• In transformer impedance reflection, which option correctly represents the factor by which the reflected impedance seen by the source scales?
• To gain physical access to the UPS within the SCU console, you must
• How does an automatic voltage regulator respond to a transient load change?
• What action is required to access the UPS in the SCU console?
• What is the current rating for each shore power cable?
• The semi-automatic controller on the fuel purifier regulates the rotational speed of what?
• What situation may cause an arc flash?
• What is the purpose of a protective relay scheme and how does it maintain selective tripping?
• Which bridge control unit subassembly consists of STATUS indicators and CONTROL switches?
• What phase configuration does the SSGTG use?
• Which bridge control unit subassembly consists of STATUS indicators and CONTROL switches?
• Which option describes a function of a DC link beyond startup protection?
• What is the purpose of an insulation resistance test?
• How many different power supply assemblies are used in the SCU consoles?
• Which statement best describes the CTM/TID system?
• What is the power factor used in the SSGTG rating?
• Which battery test is commonly used for evaluating battery capacity under load?
• What condition must be met for safe electrical synchronization before closing a generator to the bus?
• What parts make up the CTM-TID system?
• The fuel system control console provides primary control of which system?
• What is an alternate configuration of the electrical distribution system?
• When does battery charging occur once the console loads are switched to main power?
• In a residual current monitor, what does it detect to trigger a fault protection?
• Where can the fuel fill and transfer system be operated from?
• Which system isolates excessive flow in the distribution network?
• During a battery quick test, which indicator is lit to show battery usage?
• Which relay trips on ground faults to clear earth faults?
• What do the 120V-120V isolation transformers provide for lighting systems?
• Which system detects ARC fault conditions before they occur?
• What input power does the UPS system provide to the SCU?
• What condition must be met to detect a hazardous insulation breakdown?
• Which switch specifically handles the battery's off-auto status in the UPS-to-transfer path?
• Which component converts AC to DC for charging the UPS battery?
• Which summary group pertains to alarms for equipment subject to built-in ground testing?
• How do normal and emergency power distribution differ in a gas turbine installation?
• What would be the consequence of incorrect phase alignment when paralleling generators?
• From which locations can the SSGTG be started?
• What is a bus isolator and why is it used?
• Which feature keeps the motor disconnected until the operator restarts it?
• Distinguish between a circuit breaker and a fuse in electrical protection and maintenance.
• In a purely inductive AC circuit, what is the relationship between current and voltage phase?
• Which of the following steps is required to physically access the UPS within the SCU console?
• What is the total kilowatt rating of the SSGTG?
• The two direct current power sources for the DCC are designated as?
• Which component of a motor controller protects it from overcurrent?
• What event initiates the battery charging process?
• Which panel is described as the primary steering station for rudder control?
• What typical sensors and signals are used in gas turbine electrical control loops?
• What items does the Fuel Control System monitor?
• Which action describes how to access the UPS in the SCU console?
• On a schematic, how would you identify a three-phase four-wire system?
• Which equation represents real power in a three-phase system?
• The abbreviation FSCC stands for which of the following?
• Why is a DC link maintained in a control system?
• What restores power in the event of a SSGTG failure?
• The semi-automatic controller is described as what in relation to motor regulation?
• Explain the function of a neutral grounding resistor (NGR) in generator grounding, and why high-resistance grounding might be used.
• What is the role of the automatic voltage regulator (AVR) in generator synchronization?
• What are the names of the DCC direct current (DC) power sources?
• Which component is a sub-assembly of the Bridge Control Unit (BCU)?
• What is the primary operating mode of the electrical distribution system?
• Which panel section contains a four-contact push button switch wired to Local Control Units?
• What test button can be found on the A1 panel of the DCC?
• What can function as a backup if the damage control console (DCC) is inoperable?
• In shipboard electrical systems, which grounding configuration provides a fault return path and helps protective relays function?
• Using a power meter, which formulas correctly compute active, reactive, and apparent power from line voltage, line current, and power factor?
• During casualty situations, what action must be taken to re-energize a motor protected by LVP?
• The A1 panel on which console contains an auditory alarm test button?
• What is the function of current differential protection and where is it applied?
• What is the time delay between turning on the main power switch and battery charging beginning?
• Which panel indicates engine order and can change the ship's propulsion mode?
• What power panel does Shore Power enter the electrical distribution system?
• What must you do to access the UPS in the SCU console?
• What technology does SABT use to shift power?
• Overload protection operates in 2-3 hours at what full load current?
• How many DC power supplies does the DCC have and what are they called?
• What best describes how time-current coordination protects the electrical network?
• What is the difference between a bus and a feeder in a distribution system?
• What does the Emergency Override to Manual Panel contain?
• Which control interacts with the AVR to stabilize system voltage during speed or load changes?
• What is lockout/tagout (LOTO) and why is it essential for electrical maintenance?
• During a Ships Service Gasturbine Generator failure, which subsystem initiates starting the standby generator?
• What are common causes of generator voltage droop under heavy load and how can it be corrected?
• What system does the DCC use to perform its function?
• What is used to acknowledge alarms from the Fuel Control System?
• What does an Automatic Bus Transfer (ABT) do?
• Describe the CTM/TID system.
• Which statement correctly describes the electrical rating of the SSGTG?
• What governs the speed of the ship?
• What is the function of a ground fault relay?
• How can incorrect CT polarity affect protection, and how can you verify polarity?
• Which protection component is intended to trip when sustained overcurrent occurs in a motor circuit?
• What battery test is designed for early detection of battery faults?
• AFD systems are installed in which locations?
• Which console controls the Fuel Control System?
• On a generator control panel, what does the TRIP indicator signify?
• Why must insulation resistance testing consider temperature?
• How is a Static Automatic Bus Transfer (SABT) different from an ABT?
• What does the EPCC do in the event of a Ships Service Gasturbine Generator (SSGTG) failure?
• Which console monitors and controls propulsion?
• What converts messages and data for digital display in the Data Multiplex System?
• What is the purpose of a heat sink in a system?
• To route voltage from the UPS to the transfer switch, which switch must be traversed?
• How is grounding implemented in shipboard electrical systems and why is proper grounding essential?
• Which diagnostic method is used to detect hot spots in electrical equipment?
• The FSCC provides primary control of the Fuel Control System. Which statement is true about the FSCC?
• The SCU consoles require how many power supply assemblies?
• Where may the AFD system be installed in the distribution system?
• What is the role of an automatic voltage regulator (AVR) in a synchronous generator?
• Which device is designed to interrupt current instantly during a short circuit condition?
• What does the designation 2SG indicate on the switchboard?
• Which display acts as propulsion mode selector and engine order indicator?
• What are shock mounts used for?
• What is the primary purpose of the Bridge Steering Unit?
• What is the minimum acceptable resistance of insulation?
• The DMS is linked to which console for display data?
• What is the purpose of protection curves with time delays in protection systems?
• Which maintenance task is used to verify insulation resistance in gas turbine electrical equipment?
• Which system incorporates protective devices to isolate abnormal circuits?
• What is the purpose of differential protection on a generator?
• What indicators are commonly found on a generator or breaker control panel, and what do they signify?
• Grounding metal equipment helps detect which of the following conditions?
• What provides alternate sources of electricity for critical loads?
• In a three-phase four-wire system, which conductor is typically grounded?
• What is the primary steering station for controlling the rudders?
• How can electrical power systems be classified?
• How is a synchroscope used to achieve synchronization of two generators?
• In AC circuits, which statement correctly defines resistance, reactance, and impedance?
• The Fuel Control System monitors and displays tank levels for which substances?
• How does a soft starter protect the electrical circuit during motor start?
• Which device shows propulsion mode and engine order?
• How many power supply assemblies does the SCU have?
• What does an amber LED during the battery quick test indicate?
• What frequency is specified for the SSGTG?
• What is the difference between instantaneous and time-delayed overcurrent protection?
• Which panel arrangement includes performance, rudder limit, display, and new heading input?
• How many bays does the DCC have?
• Where are Arc Fault Detector (AFD) systems installed?
• Which statement correctly identifies the required action to access the UPS inside the SCU console?
• What is the purpose of voltage regulation in a generator and how is it typically achieved?
• What is the function of a bus-tie switch and when would you use it?
• What system does the BCU receive digital data from for display?
• Which multimeter should be used for measuring resistance during a manual ground test?
• Which multimeter is suitable for resistance measurement during manual ground testing?
• The Steering Power Control Panel (SPCP) is a sub-assembly of which console?
• How do you compute three-phase reactive power given V_L, I_L, and power factor?
• What voltage does the UPS provide to the Shaft Control Unit?
• What condition triggers differential protection on a generator?
• Overload protection generally operates in what time frame at 115% -125%?
• What does CT burden specify?
• If a turns ratio a = N_p/N_s, which statement is true?
• What does an accuracy class specify for a CT?
• Which summary group pertains to alarms for equipment during built-in ground testing?
• What is the purpose of selecting the CT ratio in protection and metering applications?
• Which statement best describes governor control in a gas turbine and its response to load changes?
• How would you estimate voltage drop on a feeder given current and impedance?
• How many load centers are on a DDG?
• Which expression correctly relates real power P, reactive power Q, and power factor PF when given P and PF?
• Electrical power systems are classified by which relationship?
• Shore Power enters the electrical distribution system through which power panel?
• What is the name of the engine used to start the Generator?
• What is the difference between Low Voltage Protection (LVP) and Low Voltage Release (LVR) features?
• What does the designation 2SG on a switchboard indicate?
• Which maintenance task is used to verify grounding paths are intact?
• How is the Automatic Steering Control Panel (ASCP) arranged?
• What is the difference between the CTM-TID system and the AFD system?
• What is the amperage rating for the circuit breakers between the SWBDS and Load Centers?
• What does the Control Module of the UPS consist of?
• How can potentially hazardous insulation breakdowns be detected?
• What is the purpose of a DC distribution system in a gas turbine installation?
• Which component handles input of a new heading in the automatic steering system?
• Which component enables monitoring of multiple sensors via a single bus connection?
• How is synchronism checked when paralleling two AC generators, and what criteria are typically used?
• What component of the UPS disperses heat buildup?
• Describe a safe start and synchronization sequence for a gas turbine-generator to a bus.
• What is the primary function of the Electric Plant Control Console (EPCC) during casualty events?
• Which unit monitors and controls propulsion?
• What overcurrent device trips at 6300 amps and trips instantaneously?
• What regulates a motor by monitoring the rotational speed of the drive assembly?
• What system is designed to identify potential conditions leading to an arc fault event?
• In case of a primary power loss, which component starts the standby generator to restore power?