MR ELECTRICO 2

The commutator of a generator. changes direct current produced in the armature into alternating current as it is taken from the armature. changes alternating current produced in the armature into direct current as it is taken from the armature. reverses the current in the field coils at the proper time in order to produce direct current. total amperes being used in the airplane.

The method most often used in overcoming the effect of armature reaction is through the use of. interpoles. shaded poles. drum-wound armatures in combination with a negatively connected series field. opposite the normal direction and through the shunt field in the normal direction.

The only practical method of maintaining a constant voltage output from an aircraft generator under varying conditions of speed and load is to vary the. strength of the magnetic field. number of conductors in the armature. speed at which the armature rotates. amperes and frequency must both be equal.

The pole pieces or shoes used in a dc generator are a part of the. armature assembly. field assembly. brush assembly. Inverter drive motor.

The starting current of a series-wound dc motor, in passing through both the field and armature windings, produces a. low starting torque. speed slightly higher when unloaded. high starting torque. Starter motor.

The type of electric wire terminals used for most aircraft applications, in addition to providing good current carrying capabilities, are designed primarily. to prevent circuit failure due to terminal disconnection. for uncomplicated and rapid circuit connection and disconnection. for permanent connection to the circuit. Reduce field strength.

To test generator or motor armature windings for opens,. place armature in a growler and connect a 110V test light on adjacent segments; light should light. check adjacent segments on commutator with an ohmmeter on the high resistance scale. use a 12/24V test light between the armature core segments and the shaft. rate of current used to charge the battery.

To what depth is the mica insulation between the commutator bars of a dc generator undercut?. One-half the width of the mica. Equal to twice the width of the mica. Equal to the width of the mica. Three-half the width of the mica.

What is a cause of generator brush arcing?. Seating brushes with No. 000 sandpaper. Carbon dust particles. Low spring tension. amperes and voltage must both be equal.

What is the color and orientation of the position lights for navigation on civil airplanes?. Left side - green, right side - red, rear aft - white. Left side - red, right side - green, rear aft - white. Left side - white, right side - green, rear aft - red. Left side - White, right side - red, rear aft - white.

What is the minimum bend radius for an electrical wire bundle?. Forty times the outside diameter of the bundle. Five times the outside diameter of the bundle. Fifteen times the outside diameter of the bundle. Ten times the outside diameter of the bundle.