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24 Cards in this Set
- Front
- Back
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If the generators are not operating, the voltmeter reads battery voltage when batt switch is in:
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BATT and EMER
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The voltage read on the voltmeter with the selector switch in BATT is sensed from the:
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Hot Battery Bus
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If manual termination of a start sequence is desired, the switch to press is:
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Starter Disengage button
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In flight, with the generators on line, the battery is isolated from any charging source when the battery switch is in:
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OFF and EMER
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The battery bus serves as:
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bus tie
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A good battery should supply power to hot battery bus and Emer bus for approx:
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30 min
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The light in each engine start button illuminate to indicate:
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Closing of the start relay
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The generator field relay opens when:
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1. Internal feeder fault is sensed
2. Overvoltage condition is sensed 3. Engine fire switch is activated |
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When the inverter/ Avionics power switches are powered to AC and ON or NORM and ON, normally:
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Each inverter supplies its own AC busses
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Illumination of the AC FAIL annunciator light and the MASTER WARNING lights indicates
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1. Failure of #1 inverter
2. Failure of #2 inverter 3. Failure of both inverters |
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Positioning the inverter test switch to the INV 1 position diables (UNs 0260-292 and 294-0306):
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No 1 inverter
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With the battery as the only source of power and the battery switch in the OFF position, the bus(es) powered are:
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Hot battery bus
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With the battery as the only source of power and the battery switch in the EMER position, the following bus(es) are powered:
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Emergency buses, hot battery bus
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With the battery as the only source of power and the battery switch in the BATT position, the following condition exists:
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All DC buses are powered
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With only the hot battery and emergency buses powered, the following item is inoperative:
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Nav 2
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Regarding the engine starting sequence (battery start on the ground):
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It is terminated normally by the speed sensing switch on the starter-generator.
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Regarding a generator-assist start:
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52-53% N2 is set on the operating engine
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Placing the battery switch in the EMER position with the generators on line:
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Does not cause the immediate loss of any buses
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Ignition:
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Occurs when the throttle is brought to idle
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The BATT O'TEMP light illuminates steady but:
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Extinguishes if the battery cools down
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With the battery switch in EMER in flight (both generators on the line), the following indications are observed:
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The voltmeter indicates approximately 25 volts
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Which current provides the principal electrical power for the Ultra?
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DC
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A battery is good condition can supply power to all of the busses for how long?
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10 min
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What is the saying for a generator falling off-line?
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Power Relay:
U- undervoltage R- reverse current Field Relay: O- Overvoltage F- Fire Switch F- Feeder Fault (short) |
