2a652 (Age Journeyman) Volume 2, Edit Code 6
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2A652 vol 2 Ed. 6
- 1.(201) Every atom must contain these types of particles.
- A.
Electrons and protons.
- B.
Electrons and neutrons.
- C.
Protons and neutrons.
- D.
Electrons, protons, and neutrons.
- 2.(201) Up to how many valence electrons are needed to make a good conductor?
- A.
3.
- B.
4.
- C.
5.
- D.
6.
- 3.(201) The term "dielectric" is used to describe
- A.
Conductors.
- B.
Insulators.
- C.
Doped atoms.
- D.
Semi-conductors.
- 4.(202) This defines the flow or drift of electrons through a conductor in the same direction at the same time.
- A.
Conductivity.
- B.
Voltage.
- C.
Current.
- D.
Valence.
- 5.(202) This is used to control current flow in a circuit.
- A.
Voltage.
- B.
Coulombs.
- C.
Resistance.
- D.
Conductivity.
- 6.(202) The relationship of voltage, current, and resistance is expressed through
- A.
E, I, and C formula.
- B.
Power formulas.
- C.
Conductance.
- D.
Ohm’s Law.
- 7.(203) Total current in a series circuit
- A.
Remains the same throughout the circuit.
- B.
Is the sum of the current through each component.
- C.
Is the reciprocal of the current through one component.
- D.
Is the reciprocal of the sum of the currents through each component.
- 8.
- A.
.14 watts (w).
- B.
.14 kilowatts (kw).
- C.
3.92 w.
- D.
3.92 kw.
- 9.(203) What is the voltage drop in a series circuit with a power rating of 9.68 watts, resistances of .55 kilo ohms, 4 k ohms, and 450 ohms, and current flow through the resistors of 44 milliamp (ma), 44 ma, and 44 ma?
- A.
20 volt (v).
- B.
220v.
- C.
425v.
- D.
441v.
- 10.(204) In a parallel circuit, the total voltage is equal to the
- A.
Sum of the voltages across each branch.
- B.
Voltage across each resistor.
- C.
Voltage across each branch.
- D.
The reciprocal of the voltage across the resistances.
- 11.
- A.
Voltage.
- B.
Power.
- C.
Length.
- D.
Resistance.
- 12.(204) What is the total resistance of a parallel circuit with branch voltages of 440 volt (v) and 440v and branch currents of 4 amp (a) and 16a?
- A.
11 ohms.
- B.
22 ohms.
- C.
44 ohms.
- D.
68.75 ohms.
- 13.(205) The area around a magnet where its influence can be felt, is defined as the
- A.
Magnetic theory.
- B.
Saturation principle.
- C.
Magnetic field.
- D.
Law of attraction and repulsion.
- 14.(206) The electromechanical generation of a voltage requires a magnetic field, relative motion, and
- A.
A complete circuit.
- B.
A conductor.
- C.
An insulator.
- D.
A load.
- 15.(206) In a simple generator, which would be the most difficult method used to increase the output?
- A.
Increase the area of the conductor.
- B.
Increase the amount of motion.
- C.
Increase the strength of the magnetic field.
- D.
Increase the relative resistance.
- 16.(206) The principle behind all electromechanical generation that many aerospace equipment devices have as their basis is
- A.
Conduction.
- B.
Commutation.
- C.
Rectification.
- D.
Electromagnetic induction.
- 17.(206) The function of the commutator in a direct current (DC) generator is to
- A.
Complete the circuit to the load.
- B.
Induce DC into the external circuit.
- C.
Rectify the input.
- D.
Change alternating current (AC) voltage to DC voltage.
- 18.
- A.
Heat.
- B.
Resistance.
- C.
Magnetic field.
- D.
Electrostatic field.
- 19.(207) When direct current is applied to an inductor reaches maximum, and is steady, the magnetic field around the inductor will.
- A.
Collapse.
- B.
Stop expanding.
- C.
Start to decrease slowly.
- D.
Continue to expand slowly.
- 20.(207) The process by which a current, or voltage, change in one coil produces a varying current in another coil is called
- A.
Inductance.
- B.
Self-induction.
- C.
Mutual induction.
- D.
Inductive reactance.
- 21.(208) A step-up transformer has this many turns of a wire in the secondary windings over the primary windings.
- A.
Equal.
- B.
Less.
- C.
More.
- D.
None.
- 22.(209) Basically, a relay is an electrically operated
- A.
Meter.
- B.
Motor.
- C.
Switch.
- D.
Safety device.
- 23.(209) Once energized, a relay requires a second coil to be energized before the contacts will return to their original positions. This is called a
- A.
Locking relay.
- B.
Latching relay.
- C.
Timing relay.
- D.
Tripping relay.
- 24.(210) A capacitor stores energy in the form of
- A.
Heat.
- B.
Resistance.
- C.
A magnetic field.
- D.
An electrostatic field.
- 25.(210) In a capacitor, the dielectric is also known as the
- A.
Outer case.
- B.
Positive lead.
- C.
Insulator.
- D.
Conductor.
- 26.(210) What is the opposition of a capacitor to alternating current (AC) called?
- A.
Inductive reactance.
- B.
Impedance.
- C.
Capacitive reactance.
- D.
Capacitance.
- 27.(210) The factors that determine the time required to charge a capacitor are the capacitance size and the
- A.
Circuit current.
- B.
Applied voltage.
- C.
Type of dielectric.
- D.
Amount of resistance.
- 28.(211) A diode has a fairly simple construction and the diode’s anode is constructed of this type of material.
- A.
Neutral (N).
- B.
Biased (B).
- C.
Positive (P).
- D.
Negative.
- 29.(211) A diode placed in a circuit in reverse bias is being used as
- A.
A spike protector.
- B.
An amplifier.
- C.
A regulator.
- D.
A rectifier.
- 30.(212) A Zener diode will conduct in reverse-bias
- A.
For a second or two at a time.
- B.
Until the gate potential has been reached.
- C.
Once the avalanche point has been reached.
- D.
Until an operational breakdown point has been reached.
- 31.(212) This happens to the Zener diode in the forward-bias direction.
- A.
Is destroyed.
- B.
Acts as a normal diode.
- C.
Conducts at zener value.
- D.
Exceeds the peak inverse voltage rating.
- 32.(212) A Zener being used as a regulator must have a resistor placed in the circuit in
- A.
Series.
- B.
Parallel.
- C.
Everse-bias.
- D.
Series-parallel.
- 33.(213) A light-emitting diode (LED) produces light when it is
- A.
Gated.
- B.
Neutral.
- C.
Forward-biased.
- D.
Reverse-biased.
- 34.(213) What is the approximate operating voltage of a forward-biased light-emitting diode (LED)?
- A.
.5 volts.
- B.
.1 volt.
- C.
1.6 volts.
- D.
2.4 volts.
- 35.(214) How many PN junctions does the silicon-controlled rectifier (SCR) have?
- A.
One.
- B.
Two.
- C.
Three.
- D.
Four.
- 36.(214) A silicon controlled rectifier (SCR) is mainly used as a/an
- A.
Fuse.
- B.
Spike protector.
- C.
Circuit breaker.
- D.
Electronic switch.
- 37.(214) The amount of current required to gate a silicon-controlled rectifier (SCR) is called
- A.
Forward breakover voltage.
- B.
Holding current.
- C.
Peak voltage.
- D.
Gate current.
- 38.(214) In order for a silicon-controlled rectifier (SCR) to be turned off, the
- A.
Forward breakover voltage must exceed the holding voltage.
- B.
Current must drop below the holding current.
- C.
Negative amp switch must activate.
- D.
Negative volt switch must activate.
- 39.(214) Which type of silicon-controlled rectifier (SCR) would be most effective to switch 4 amperes at up to 425 volts?
- A.
Low current.
- B.
Medium current.
- C.
High current.
- D.
Very high current.
- 40.(215) Which troubleshooting step involves knowing proper equipment operation?
- A.
Analysis.
- B.
Recognition.
- C.
Repair and check.
- D.
Elimination and isolation.
- 41.(215) During which troubleshooting step do you begin to use the schematic diagram as an invaluable tool?
- A.
Recognition.
- B.
Verification.
- C.
Analysis.
- D.
Isolation.
- 42.(216) Which troubleshooting aid is designed to assist you in finding the actual unit location of electrical components?
- A.
Zones.
- B.
Schematic.
- C.
Wiring diagram.
- D.
Reference designation index.
- 43.(216) This troubleshooting aid is designed to assist you in finding components on a diagram.
- A.
Zone.
- B.
Schematic.
- C.
Wiring diagram.
- D.
Reference designation index.
- 44.(217) The bar graph of the 8025A multimeter is updated 10 times as often as the digital display. What does the bar graph indicate?
- A.
Absolute value.
- B.
Digital display.
- C.
Operating mode.
- D.
Range indication.
- 45.(217) When conducting current checks, you should connect the multimeter in the circuit in
- A.
Reverse order.
- B.
Series-parallel.
- C.
Parallel.
- D.
Series.
- 46.(217) When performing a continuity check on a wire using the diode test mode, a good wire will register
- A.
As OL.
- B.
As zero.
- C.
As infinity.
- D.
A beep.
- 47.(218) Use this to set a value to the oscilloscope’s vertical grid markings.
- A.
Focus.
- B.
Pitch control.
- C.
Voltage selector.
- D.
Time sweep selector.
- 48.(219) This could be the indication from the 8025A multimeter when you are checking a serviceable capacitor.
- A.
A beep.
- B.
An extended analog bar graph.
- C.
An OL display.
- D.
A 0 ohms display.
- 49.
- A.
1.
- B.
2.
- C.
3.
- D.
4.
- 50.(220) One way you are able to identify electrostatic sensitive devices is by
- A.
The MIL-SPC–235 symbol or a warning marking.
- B.
The special coloring package as specified in local directives.
- C.
The MIL-STD–129 symbol or a caution marking.
- D.
A special control number as specified in local directives.
- 51.(221) A heat sink is used in soldering to
- A.
Prevent heat from damaging the component being soldered.
- B.
Prevent heat from damaging other components in the circuit.
- C.
Apply heat to the component being soldered.
- D.
Apply heat to other components in the circuit.
- 52.(221) A pitted or worn soldering iron tip should be redressed with a flat, fine, single-cut file, and then be
- A.
Tinned.
- B.
Cleaned of solder.
- C.
Replaced.
- D.
Checked for length.
- 53.(222) You insert a wire into a solder cup until this happens.
- A.
Wire reaches the bottom of the cup.
- B.
Wire protrudes from the weep hole.
- C.
Wire clears the top of the cup.
- D.
Insulation touches the cup.
- 54.(222) A good solder cup connection shows the
- A.
Insulation.
- B.
Solder flux.
- C.
Wire number.
- D.
Wire contour.
- 55.(223) This is the best method of repairing a lifted or peeled conducting strip on a printed circuit board (PCB).
- A.
Bond it.
- B.
Glue it.
- C.
Replace it with bare wire.
- D.
Replace it with insulated wire.
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