Electrical power systems

Question 1

A fully charged battery should supply power to the battery bus and the emer buses for approximately
A. 2 hours 
B. 1 hours
C. 30 minutes 
D. 10 minutes

Answer 1

C

Question 2

If the red battery over temp annunciator light segment flashes the battery switch should be initially placed to \_\_\_\_\_\_\_\_\_\_\_\_    To isolate the battery from the generators and check for an amperage decrease
A. Off
B. Emer
C. Either A or B
D. None of the Above

Answer 2

B

Question 3

Generators on-line BATT switch ON with a voltage metre selector switch remaining in BATT the voltmeter gauge will indicate

A. Generator system voltage 28.5 V from the battery bus

B. Generator system voltage 28.5 V from the crossfeed bus

C. Battery voltage 24-25 V from the battery bus

D. Battery voltage 24-25 V from the crossfeed bus

Answer 3

A

Question 4

Generators on line BATT switch OFF voltage selector BATT, the voltmeter gauge will indicate.
 A.  24 to 24 V
 B.  28.5 V
 C.  no voltage 
 D.  none of the above

Answer 4

C

Question 5

If the GEN OFF L annunciator segment illuminates.

A. The right generator ammeter gauge should indicate double the previous load.

B. The left generator amperage will drop to 0.

C. The voltmeter should register 0 with the voltimeter selector remaining in the BATT position.

D. Both A. and B.

Answer 5

D

Question 6

If both GEN. OFF L and R annunciator segments illuminate simultaneously.

A. The MASTER CAUTION RESET light will illuminate steady.

B. The MASTERS WARNING RESET light will eliminate flashing.

C. Both A and B.

D . Only the GEN. OFF L and R annunciator segments of Flash

Answer 6

C

Question 7

If the AFT J-Box-LMT annunciator segment illuminates indicates.

A. An aft J-Box 60 amp feed bus current limiter is open.

B. An AFT J-Box 225 amp feed bus current limiter is open.

C. The generators should be selected OFF one at a time to determine which limiter is open.

D. The aircraft should be landed as soon as possible.

Answer 7

B

Question 8

If both generators have tripped off line and unable to reset, and the BATT switch is placed in EMER the following equipment is Inoperative.

A. Standby HSI

B. Normal extension of the landing gear

C. Ignition

D. speedbreaks

Answer 8

D

Question 9

With the BATT switch select to EMER select correct choice

A. Only the standby radio control head will be operational for air-to-ground communications.

B. AHRS 2 supplies heading information to the standby HSI.

C. AHRS1 supplies heading information to the standby HSI.

D. The secondary flight display may be used for an ILS approach APR switch depressed

Answer 9

B

Question 10

If the battery overtemps and cannot be isolated battery isolation relay stuck closed.

A. Turn the BATT switch off and land as soon as practical.
B. Activate the battery disconnect switch.

C. After performing choice B if the BATT over temp is greater than a 160ﾟ annunciator segment begins to Flash land as soon as possible.
D. Both B & C

Answer 10

D

Question 11

Select the correct statement concerning the use of a ground power unit.

A. Never connect the power cord to or remove it from the aircraft with power applied.

B. The battery will not receive a charge if the BATT switch is ON.

C. The GEN switches are placed in the OFF position for an engine start using the GPU.

D. The GPU ground unit must be regulated at 28 V and 800 to 1000 amps.

Answer 11

D

Question 12

The standby flight display emergency power system powers.

A. The pilot’s PFD with the battery switch set in EMER.

B. The standby HSI backlighting.

C. the standby flight display.

D. Both B & C

Answer 12

D

Question 13

Selecting EMER with the B ATT switch.

A. Will allow the crossfeed bus to power all emergency systems.

B. Will render the voltmetre inoperative.

C. The battery will still receive a charge from the generators.

D. Allows only the EMER and BATTERY bus items to be powered.

Answer 13

D

Question 14

By activating the INTERIOR MASTER switch.

A. The cabin light switches are disabled.

B. Turns on all of the reading lights.

C. Removes all power from the cabin aft of the cockpit.

D. Removes all interior power from the aircraft.

Answer 14

C

Question 15

Which interior lights may be turned on with the BATT and GEN switches OFF?

A. Cabin entry, tailcone, and baggage lighting.

B. Cockpit flood, cabin indicator, tail cone, and battery compartment.

C. Cabin entry, tail cone, cockpit flood, and baggage lighting.

D. Cockpit flood, cabin flood, and baggage lighting.

Answer 15

A

Question 16

An illuminated white AHRS AUX PWR 1/2 annunciator indicates.

A. The AHRS system is now powered through the AVN bus.

B. Indicates the AHRS is being powered by the AHRS auxiliary power.

C. Indicates a condition that requires immediate action.

D. Indicates a partial failure of the AHRS system.

Answer 16

B

Question 17

If the battery voltage indicates 24 Volts prior to engine start

A. This is a low battery and must be charged to 28 volts

B. The GPU must be used for starting

C. 24 Volts Is the minimum voltage required

D. Voltage is excessive and could damage the starter

Answer 17

C

Question 18

During a DC volts and amps test.

A. The operating generator should indicate 24 V

B. When turning the right generator off, the left amp load should double.

C. Is the GEN OFF L/R should illuminat

D. Is required to make sure the emergency power supply is supplying power to the aircraft.

Answer 18

B

Question 19

Concerning starting limitations, which is the correct statement?

A. 3 engine starts per hour is allowed.

B. The generator assisted start counts as one battery count.

C. If 4 or more battery starts are performed in one hour the battery must be allowed to cool for 30 minutes.

D. There are new starter limitations when using a GPU.

Answer 19

A