Interior Communication Systems Flashcards
What does a switching unit on a MK-27 gyro do?
Provides means of driving two 70 volts step by step repeaters from the 400hz power.
What does the MK-27 consist of?
Master compass, electronic control, and power converter.
What should a properly zeroed synchro read between S1 and S3?
0V
When a 180 degree phase shift has occurred in a synchro, what two leads do you reverse?
R1 and R2
Why is the wind direction indicator and rotor pointed toward the bow?
Wind direction is in relative bearings
What type of light do you get on a telltale panel when the running light is operating on the secondary filament and the primary is open?
Yellow light
What provides a chronological history of inspections, repairs, and overhauls of a gyro?
Gyrocompass service record book
Where can you find instructions on how to use the gyrocompass record book
Gyrocompass record book
What type of synchro indicators are used for precise readings?
36X
What is the most accurate method to zero a synchro?
AC voltmeter
What is the fastest method to zero a synchro?
Electric lock
What are the three main components of the wind speed and direction system
Detector, transmitter, and indicator
What type of voltage is connected to the anode on an impressed current system?
DC
What type of resistor should be connected across the switch contacts of each alarm circuit to complete the supervisory circuit?
7,000 ohm, 5 W
Anode is _____ and Cathode is _____?
Positive, Negative
