Quiz
Refuerzo
Create a free account to finish this quiz
Save your progress and see your final score.
Already have an account? Sign in
Questions in this quiz (20)
1Which of the following must be accomplished when installing an anticollision light?
- AInstall a switch independent of the position light switch.
- BUse shielded electrical cable to assure fail-safe operation.
- CConnect the anticollision light to the aircraft position light switch.
- DThe number of turns of wire in the coil and the applied voltage.
2What is a method used for restoring generator field residual magnetism?
- AFlash the fields.
- BReseat the brushes.
- CEnergize the armature.
- Dshow very low resistance if it is a series field coil.
3The overvoltage control automatically protects the generator system when excessive voltage is present by
- Aopening the shunt field circuit
- Bopening and resetting the field control relay.
- Cbreaking a circuit to the trip coil of the field control relay.
- Dincreasing the output of the low generator to equal the output of the high generator.
4When using an ohmmeter to check the continuity of a generator field coil, the coil should
- Abe removed from the generator housing.
- Bshow high resistance when the meter prods are connected to the terminals of the coil.
- Cshow very low resistance if it is a series field coil
5The voltage output of an alternator may be regulated by controlling the
- Aspeed of the alternator.
- Bvoltage output of the dc exciter.
- Cresistance in the rotor windings.
- Ddusting the cable with powdered soapstone.
6The strength of the core of an electromagnet depends upon the material from which it is constructed and which of the following?
- AThe number of turns of wire in the coil and the applied voltage.
- BThe number of turns of wire in the coil and the amount of current (amperes) passing through the coil.
- CThe size (cross section) and the number of turns of wire in the coil and the applied voltage.
- Dresistance in the generator output circuit.
7When dc generators are operated in parallel to supply power for a single load, their controls include an equalizer circuit to assure that all generators share the load equally. The equalizer circuit operates by
- Aincreasing the output of the low generator to equal the output of the high generator.
- Bdecreasing the output of the high generator to equal the output of the low generator.
- Cincreasing the output of the low generator and decreasing the output of the high generator until they are equal.
- Dtotal effective field strength by changing the reluctance of the magnetic circuit.
8What is the purpose of the selection of derated switches for known continuous load current applications?
- ATo calculate the voltage drop across the circuit.
- BTo prevent short circuits in the motor field windings.
- CTo obtain reasonable switch efficiency and service life.
- DThe current exceeds a predetermined value.
9The voltage output of an alternator may be regulated by controlling the
- Aspeed of the alternator.
- Bvoltage output of the dc exciter.
- Cresistance in the rotor windings.
- Ddusting the cable with powdered soapstone.
10Which of the following should be accomplished in the installation of aircraft wiring?
- ASupport the bundle to structure and/ or solid fluid lines to prevent chafing damage.
- BProvide adequate slack in the wire bundle to compensate for large changes in temperature.
- CLocate the bundle above flammable fluid lines and securely clamp to structure.
- Donly plain nuts and lockwashers have been used for terminal attachment to the studs.
11When using an ohmmeter to check the continuity of a generator field coil, the coil should
- Abe removed from the generator housing.
- Bshow high resistance when the meter prods are connected to the terminals of the coil.
- Cshow very low resistance if it is a series field coil.
- Dopening the shunt field circuit.
12When using the voltage drop method of checking circuit resistance, the
- Ainput voltage must be maintained at a constant value.
- Boutput voltage must be maintained at a constant value.
- Cinput voltage must be varied.
- Dthe voltage and amperage of the load it must carry.
13Integrated drive generators (IDG) employ a type of high output ac generator that utilizes
- Abrushes and slip rings to carry generated dc exciter current to the rotating field.
- Bbattery current to excite the field.
- Ca brushless system to produce current.
- Deither the component or the circuit is shorted.
14Cuando dos o más generadores de corriente alterna se van a conectar en paralelo, se deben cumplir las siguientes condiciones antes de su conexión:
- AIgual corriente, igual frecuencia, igual fase e igual sincronismo
- Bigual sincronismo, igual corriente, igual voltaje e igual frecuencia
- CIgual factor de potencia, igual fase, igual voltaje e igual frecuencia
- DIgual fase, igual voltaje, igual frecuencia e igual sincronismo
15If any one generator in a 24-volt dc system shows low voltage, the most likely cause is
- Aan out-of-adjustment voltage regulator.
- Bshorted or grounded wiring.
- Ca defective reverse current cutout relay.
- Da stepdown transformer and a rectifier.
16f the positive field lead between a generator and a generator control panel breaks and is shorted while the engine is running, a voltmeter connected to generator output would indicate
- Azero voltage.
- Bresidual voltage.
- Cnormal voltage.
- DHight voltage
17If the reverse current cutout relay contact points fail to open after the generator output has dropped below battery potential, current will flow through the generator armature
- Ain the normal direction and through the shunt field opposite the normal direction.
- Band the shunt field opposite the normal direction.
- CCentrifugal force releases a rotating brake cog from a stationary notch when the armature reaches a certain speed and magnetic force re-engages the cog when the electrical power is turned off.
- Dopposite the normal direction and through the shunt field in the normal direction.
18A voltage regulator controls generator voltage by changing the
- Aresistance in the generator output circuit.
- Bcurrent in the generator output circuit.
- Cresistance of the generator field circuit.
- Ddecreasing the output of the high generator to equal the output of the low generator.
19Bonding connections should be tested for
- Aresistance value.
- Bamperage value.
- Creactance.
- DAlternator
20The only practical method of maintaining a constant voltage output from an aircraft generator under varying conditions of speed and load is to vary the
- Astrength of the magnetic field.
- Bnumber of conductors in the armature.
- Cspeed at which the armature rotates.
- Damperes and frequency must both be equal.
Information
- Description
- Quiz on Refuerzo, created by Angie Bolaños on 13/06/2016.
- Author
- Angie Bolaños
- Language
- Español
- Views
- 0
- History
- Created on 13 Jun 2016 · updated on 20 Jun 2016
- Rating
- No ratings yet Rate this quiz