# CDC 2A652 Vol. 2

60 Questions | Attempts: 2866

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Aerospace Ground Equipment Journeyman Electrical and Electrical Circuits and Components. Edit Code 05.

• 1.
Every atom must contain what types of particles?
• A.

Electrons and protons.

• B.

Electrons and neutrons.

• C.

Protons and neutrons.

• D.

Electrons, protons, and neutrons.

• 2.
An atom with eight electrons in its outermost shell is said to be
• A.

Free.

• B.

Stable.

• C.

Valence.

• D.

Ionized.

• 3.
How many valence electrons are needed to make a good conductor?
• A.

3.

• B.

4.

• C.

5.

• D.

6.

• 4.
"Dielectric" is the term used for
• A.

Conductors.

• B.

Insulators.

• C.

Doped atoms.

• D.

Semi-conductors.

• 5.
"The flow or drift of electrons through a conductor" in the same direction at the same time is
• A.

Conductivity.

• B.

Voltage.

• C.

Current.

• D.

Valence.

• 6.
The potential difference between two points in a circuit that exerts a force on free electrons is called
• A.

Conductivity.

• B.

Voltage.

• C.

Current.

• D.

Valence.

• 7.
What is used to control current flow in a circuit?
• A.

Voltage.

• B.

Coulombs.

• C.

Resistance.

• D.

Conductivity.

• 8.
The relationship of voltage, current, and resistance is expressed through
• A.

E, I, and C.

• B.

Power formulas.

• C.

Conductance.

• D.

Ohm's Law.

• 9.
Total current in a series circuit is equal to the
• A.

Current through one component.

• B.

Sum of the current through each component.

• C.

Reciprocal of the current through on component.

• D.

Reciprocal of the sum of the currents through each component.

• 10.
What is the wattage of a circuit with 28 volts applied and a total resistance of .2 ohms?
• A.

.14 watts (w)

• B.

.14 kilowatts (kw)

• C.

3.92 w.

• D.

3.92 kw.

• 11.
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.

• 12.
Source current in a parallel circuit will be divided according to branch
• A.

Voltage.

• B.

Powers.

• C.

Lengths.

• D.

Resistances.

• 13.
The area around a magnet where its influence can be felt is the definition of the
• A.

Saturation principle.

• B.

Magnetic theory.

• C.

Magnetic field.

• D.

Law of attraction and repulsion.

• 14.
"The ability of a material to pass lines of force" is a definition of
• A.

Permeability.

• B.

Reluctance.

• C.

Electromagnetism.

• D.

Retentivity.

• 15.
The magnetism that remains after the magnetizing force has been removed is known as
• A.

Electromagnetism.

• B.

Molecular magnetism.

• C.

Permeability.

• D.

Residual magnetism.

• 16.
The magnetic field of an electromagnet can be varied by changing the
• A.

Type of core.

• B.

Number of turns in the coil.

• C.

Amount of current in the coil.

• D.

All of the above.

• 17.
The electromechanical generation of a voltage requires a magnetic field, relative motion, and
• A.

A complete circuit.

• B.

A conductor.

• C.

An insulator.

• D.

• 18.
The principle behind all electromechanical generation is
• A.

Conduction.

• B.

Commutation.

• C.

Rectification.

• D.

Electromagnetic induction.

• 19.
The function of the commutator in a DC generator is to
• A.

Complete the circuit to the load.

• B.

Induce DC into the external circuit.

• C.

Rectify the input.

• D.

Change AC voltage to DC voltage.

• 20.
Because an inductor stores energy and then returns it to the circuit, it is called a
• A.

Resistive device.

• B.

Reactive device.

• C.

Retentive device.

• D.

Retroactive device.

• 21.
An inductor stores energy in the form of
• A.

Heat.

• B.

Resistance.

• C.

A magnetic field.

• D.

An electrostatic field.

• 22.
The process by which a current change in one coil produces a voltage in another coil is called
• A.

Inductance.

• B.

Self-induction.

• C.

Mutual induction.

• D.

None of the above.

• 23.
A transformer will change all of the following except
• A.

Power.

• B.

Current.

• C.

Voltage.

• D.

Resistance.

• 24.
Normally, the winding of a transformer that is connected to a power source is known as the
• A.

Field winding.

• B.

Primary winding.

• C.

Current winding.

• D.

Secondary winding.

• 25.
What kind of turns of wire is found in the secondary windings of a step up transformer?
• A.

Equal.

• B.

Less.

• C.

More.

• D.

All of the above.