Term
| What are the ratings of the CRJ's two batteries? |
|
Definition
| APU battery is a 24v, 43amp nickle nicad battery, and the main battery is a 24v, 17 amp Nickle NiCad |
|
|
Term
| What does the green DC AVAIL light mean? |
|
Definition
| External DC is plugged in and is the correct voltage and polarity |
|
|
Term
| What does the green AC AVAIL light mean? |
|
Definition
| External AC is plugged in and is the correct frequency, phase and voltage |
|
|
Term
| What are the sources of 115v AC power? |
|
Definition
| 2 IDG's (integrated drive generators) APU generator, Air driven generator, And AC ground power |
|
|
Term
| When can the pilot reset a circuit breaker in flight? |
|
Definition
| Under the direction of a QRH procedure or when in the judgement of the PIC it is necessary for the safe completion of the flight. |
|
|
Term
| What two components compromise the IDG? |
|
Definition
| CSD (constant speed drive) and a generator |
|
|
Term
|
Definition
| It utilizes an internal oil system to hydr-mechanically to change variable input speed from the engine accessory gearbox to a constant speed output for the generator of 12,000 RPM. |
|
|
Term
| What provides electrical power if there is a complete loss of AC in flight? |
|
Definition
| ADG, The air driven generator provides 15 KVA AC power |
|
|
Term
| What is the KVA rating of the IDG's? |
|
Definition
| 30 KVA up to 35,000 feet, 25 KVA up to 41,000 feet |
|
|
Term
| What two conditions will cause the IDG to automatically disconnect? |
|
Definition
| Over torque (aproximately 3300 lbs ) and, Over-temp ( 168 degrees C case temperature ) |
|
|
Term
| If you manually disconnect an IDG, can you get it back in flight? |
|
Definition
| NO, it can only be reset on the ground |
|
|
Term
| What is the KVA rating of the APU generator? |
|
Definition
|
|
Term
| What is the AC bus priority? |
|
Definition
| Onside, APU, Cross side, and external power |
|
|
Term
| How many TRU's does AC bus 2 power? |
|
Definition
| Three U TRU 2, ESS TRU 2, and SERV TRU through the AC SERV bus |
|
|
Term
| AC ESS bus in normally powered how? |
|
Definition
| By AC bus 1, however it can be manually or automatically transfered to AC bus 2 |
|
|
Term
| What would the indication be if AC ESS was being powered by AC bus 2? |
|
Definition
| The The AC ESS XFER ALTN light will come on |
|
|
Term
| What is the power priority of the AC ESS bus? |
|
Definition
| AC bus 1, AC bus 2, ADG bus |
|
|
Term
| What will the indication be if the ADG has deployed? |
|
Definition
| EMER POWER ONLY EICAS message |
|
|
Term
| What are the conditions to auto deploy the AGD? |
|
Definition
| All AC power is lost, Last AC power source was internal, weight off wheels, and parking brake off |
|
|
Term
| What does the DC SERV switch do? |
|
Definition
| Connects the DC SERV bus to the APU BATT DIR bus |
|
|
Term
| What is on the DC EMER bus? |
|
Definition
| Engine and APU fire extinguishers, and fuel and hyd. shut off valves |
|
|
Term
| What bus ties are manual vs automatic? |
|
Definition
| Ties 1 and 2 are automatic or manual, ESS tie is manual only |
|
|
Term
|
Definition
|
|
Term
| Why is it essential to pull the AGD handle, even if it has automatically deployed? |
|
Definition
| Pulling the handle “locks the aircraft in a weight off wheels “condition preventing the loss of DC ESS on landing. |
|
|
Term
| How long can the batteries provide backup power if all electrical is lost? |
|
Definition
|
|
Term
| What are the electrical ratings of the TRU's? |
|
Definition
|
|
Term
| How would you isolate an AC bus? |
|
Definition
| By pressing the onside AUTO XFER INHIBIT switch light and then turning off the affected generator |
|
|
Term
| Why is it essential to pull the AGD handle, even if it has automatically deployed? |
|
Definition
| Pulling the handle “locks the aircraft in a weight off wheels “condition preventing the loss of DC ESS on landing. |
|
|
