2A652 CDC Volume 2: Test Questions On Aerospace Ground Equipment!
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- 1.How many valence electrons are needed to make a good conductor?
- A.
3
- B.
4
- C.
5
- D.
6
- 2.An atom with eight electrons in its outermost shell is said to be
- A.
Free
- B.
Stable
- C.
Valence
- D.
Ionized
- 3."Dielectric" is the term used for
- A.
Conductors
- B.
Insulators
- C.
Doped atoms
- D.
Semi-conductors
- 4."The flow or drift of electrons through a conductor" in the same direction at the same time is the definition of
- A.
Conductivity
- B.
Voltage
- C.
Current
- D.
Valence
- 5.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
- 6.What is used to control current flow in a circuit?
- A.
Voltage
- B.
Coulombs
- C.
Resistance
- D.
Conductivity
- 7.Given a voltage of 24 volts and a resistance of 18 ohms in a series circuit, the current through the resistor would be
- A.
.075 amps
- B.
1.33 amps
- C.
133 amps
- D.
750 amps
- 8.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 one component
- D.
Reciprocal of the sum of the currents through each component
- 9.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 resistance
- 10.Source current in a parallel circuit will be divided according to branch
- A.
Voltage
- B.
Powers
- C.
Lengths
- D.
Resistances
- 11.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
- 12.Total current in a series-parallel circuit remains the same throughout the
- A.
Parallel portion of the circuit and divides according to component resistance in the series portion
- B.
Series part of the circuit and divides according to branch resistance in the parallel portion
- C.
Parallel portion of the circuit and increases according to component resistance in the series portion
- D.
Series part of the circuit and increases according to component resistance in the parallel portion
- 13.What is the total current in a series-parallel circuit that has a total voltage of 48 volts (v), a series current of 6 amps (a), one branch current of 2a, and the other branch resistance of 3 ohms?
- A.
3a
- B.
6a
- C.
8a
- D.
12a
- 14.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
- 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 through 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.
A load
- 18.In a simple generator, which would be the most difficult method 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
- 19.The principle behind all electromechanical generation is
- A.
Conduction
- B.
Commutation
- C.
Rectification
- D.
Electromagnetic induction
- 20.An inductor stores energy in the form of
- A.
Heat
- B.
Resistance
- C.
A magnetic field
- D.
An electrostatic field
- 21.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
- 22.A transformer will change all of the following except
- A.
Power
- B.
Current
- C.
Voltage
- D.
Resistance
- 23.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
- 24.A relay is an electrically operated
- A.
Meter
- B.
Motor
- C.
Switch
- D.
Safety device
- 25.A relay that once energized, requires a second coil to be energized before the contacts will return to their original positions is called a
- A.
Locking relay
- B.
Latching relay
- C.
Timing relay
- D.
Tripping relay
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